浅谈Redis集群架构与主从架构

最新推荐文章于 2025-01-09 12:10:55 发布
最新推荐文章于 2025-01-09 12:10:55 发布
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分类专栏： Redis 文章标签： redis 架构
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目录

1. Redis集群

1.1 集群概念

面试官：我看你简历写了Redis集群，你说一说？

Redis主从架构和Redis集群架构是两种不同的概念，大家刚接触Redis时经常弄混淆。下面是Redis官网对两者的解释。

（1）Redis主从架构

Redis主从实现了有一个易于使用和配置的领导者跟随者复制，它允许副本 Redis 实例成为主实例的精确副本。

（2）Redis集群架构

Redis 集群将数据自动分片到多个 Redis 节点，Redis 集群还在分区期间提供一定程度的可用性，当某些节点发生故障或无法通信时，Redis集群能够继续运行。

它们两者都是Redis高可用的解决方案，但偏向点不同。Redis主从对数据的完整性更看重，Redis主从节点都保存了完整的一套数据库状态。

而Redis集群则对抗压能力更看重，整个集群的数据库整合起来才是一个完整的数据库。

在功能性上它们也有不同，Redis主从有哨兵，而Redis集群有分片。我们要看业务选择不同的Redis方案，当然，Redis集群还可以搭配Redis主从一起使用，我们可以在某一个集群节点上配置一套主从模型。

如果要6002、6003节点添加到6001节点的Redis集群里，我们可以使用以下命令。

127.0.0.1:6001＞ CLUSTER MEET 127.0.0.1 6002
OK
127.0.0.1:6001＞ CLUSTER MEET 127.0.0.1 6003
OK

1.2 集群分片

面试官：那Redis集群怎么实现负载均衡的？

Redis集群一个很重要的知识点，那就是分片。Redis集群通过分片的方式来保存数据库中的键值对，Redis集群把整个数据库分为16384个槽，而集群中的每个节点可以处理这里面的0个或最多16384个槽。

假如现在配置了一个包含 3 个节点的集群，那么这3个节点的槽分配会是这样的：

  • 节点 A 包含从 0 到 5500 的哈希槽。
  • 节点 B 包含从 5501 到 11000 的哈希槽。
  • 节点 C 包含从 11001 到 16383 的哈希槽。

那这样分片有什么作用？

大家想一想，有了分片，我们对某一个键值对的增删改查就会在三个集群节点中的其中一个进行，这样对Redis的各种操作也就负载均衡地下落到各个集群的节点中。

1.3 重新分片

面试官：要是热点数据都是某个Redis节点的槽，负载均衡不是没用了？

Redis集群甚至可以在线上环境直接执行重新分片功能，分片是不是很灵活呢？南哥给Redis点赞。

Redis官网对分片是这么解释的。

Moving hash slots from a node to another does not require stopping any operations; therefore, adding and removing nodes, or changing the percentage of hash slots held by a node, requires no downtime.

将哈希槽从一个节点移动到另一个节点不需要停止任何操作；因此，添加和删除节点，或更改节点持有的哈希槽百分比，不需要停机。

Redis集群重新分片可以将任意数量已指派给某个节点的槽改为指派给另一个节点，而相关槽所属的键值对也会从源节点被移动到目标节点。重新分片操作也不需要集群节点下线，源节点和目标节点也都可以继续处理命令请求。

要是遇到热点数据都精确命中了Redis集群的某一个节点，赶快在线上环境紧急重新分片，把相关热点槽指派给其他节点处理，这也是一个不错的选择。

2. 集群的主从模型

2.1 主从模型

面试官：Redis集群的主从模型了解过吗？

还记得上文南哥提到过可以给Redis集群的某一个节点配置主从模型吗？

Redis集群把键值都分散在多个集群节点中，这也有缺点。例如某一个节点失效了，那这个节点里所有槽的键值对也都无法访问了。Redis官方当然也知道，主从模型可以让集群节点有1~N个副本节点。

像上文的Redis集群的A、B、C三个节点，主从模型可以为这每一个主节点添加一个副本节点。这样的话集群就变成了由A、B、C、A1、B1、C1组成，例如当A节点失效了，那它的副本节点A1就会提升为新的主节点。

主从模型也有另外的好处，我们可以让主节点用于处理槽，而副本节点用来分担读的压力。

在这里插入图片描述

为集群B节点添加B1、B2副本节点

2.2 主节点选举

面试官：那集群里怎么选举主节点的？

Redis集群的主从模型选举主节点和Redis哨兵选举出主节点非常相似，但大家不要搞混了，Redis集群中并没有哨兵的概念。

主从模型选举主节点和哨兵选举领头哨兵一样是先到先得，而且它们投票的对象是集群中的其他主节点。

选举的流程如下：

  1. 当从节点发现主节点进入下线状态时，会广播一条CLUSTERMSG_TYPE_FAILOVER_AUTH_REQUEST消息，要求其他集群主节点向改从节点进行投票。
  2. 投票遵循先到先得的规则，集群主节点会投票给第一个发送选举信息的该从节点，返回一条CLUSTERMSG_TYPE_FAILOVER_AUTH_ACK消息。
  3. 如果集群主节点的个数是N，当某个从节点收到大于等于N / 2 + 1张支持票时，代表该从节点获胜，该从节点也将成为新的主节点。
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throughout execution cycles accordingly thus making them suitable candidates especially during real-time applications subjecting heavy computational demands upon system resources management aspects thereof respectively thereafter indeed therefore ultimately henceforth conclusively absolutely positively definitively surely certainly assuredly undoubtedly undeniably incontrovertibly irrefutably indisputably unarguably unquestionably verifiably reliably dependably trustworthily convincingly persuasively compellingly cogently coherently consistently uniformly regularly normally ordinarily commonly frequently prevalently predominantly dominantly overwhelmingly exceedingly exceptionally extraordinarily remarkably notably significantly substantially considerably meaningfully importantly crucially vitally essentially fundamentally basically generally widely broadly extensively expansively comprehensively thoroughly completely fully totally wholly entirely altogether together jointly 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meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious clear evident manifest palpable tangible material concrete actual real true genuine authentic credible believable convincing persuasive authoritative knowledgeable intelligent wise sagacious shrewd astute acute perceptive insightful discerning discriminating judicious prudent cautious careful meticulous precise accurate exact correct valid sound logical rational reasonable sensible thoughtful reflective deliberate purposive intentional designed planned organized systematic methodical ordered clean neat tidy compact succinct brief concise terse pithy pointed incisive penetrating piercing profound deep serious earnest solemn grave weighty momentous substantive influential effectual efficacious successful triumphant victorious glorious honorable creditable respectable admirable commendable laudable praiseworthy worthy meritorious virtuous moral ethical upright honest truthful straight forward candid open transparent visible observable detectable recognizable distinguishable identifiable notable remarkable extraordinary exceptional outstanding pre eminent premier foremost leading principal primary main important significant substantial considerable meaningful impactful effective productive fruitful profitable advantageous beneficial helpful supportive constructive creative innovative original unique distinctive memorable impressive striking dramatic noticeable obvious
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