kestrel小记

最新推荐文章于 2025-07-18 20:03:11 发布

iteye_20379

最新推荐文章于 2025-07-18 20:03:11 发布

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CC 4.0 BY-SA版权

文章标签：开发工具 git scala

本文链接：https://blog.youkuaiyun.com/iteye_20379/article/details/82303063

本文介绍如何从源码安装配置Kestrel消息队列系统，并演示了基本的队列操作流程，包括创建队列、写入数据、读取数据等。通过实例展示了Kestrel的分布式特性及数据持久化方式。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

 git clone git://github.com/robey/kestrel.git && cd kestrel/

wget http://simple-build-tool.googlecode.com/files/sbt-launch-0.7.4.jar

3. vim sbt

java -Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=384M -jar `dirname $0`/sbt-launch.jar "$@"

:wq
4.

./sbt clean update package-dist

(for now,only work with sbt0.74 and scala 2.7.7;a bug may occur about persistentqueue test case,just comment it)
5.

mkdir /var/log/kestrel && chmod -R 777 /var/log/kestrel

mkdir /var/spool/kestrel && chmod -R 777 /var/spool/kestrel

./dist/kestrel/scripts/devel.sh

8. open another terminal

telnet localhost 22133
set mytest 0 0 3
aaa

9. open another terminal

telnet localhost 22133
get mytest

10. repeat step 8，then shutdown the kestrel servie.

vim /var/spool/kestrel/mytest
:%!xxd
// hex edit it to aab
:%!xxd -r
:wq

11.

./dist/kestrel/scripts/devel.sh

12. in another terminal:

telnet localhost 22133
get mytest

（you should see aab here）

keynotes:
1. kestrel store items in journal file(/var/spool/kestrel/queuename)
2. A cluster of kestrel servers is like a memcache cluster: the servers don't
know about each other, and don't do any cross-communication, so you can add as
many as you like. Clients have a list of all servers in the cluster, and pick
one at random for each operation. In this way, each queue appears to be spread
out across every server, with items in a loose ordering.
3. kestrel doesn't enforce any
restrictions other than the name can't contain slash (`/`) because that can't
be used in filenames, squiggle (`~`) because it's used for temporary files,
plus (`+`) because it's used for fanout queues, and dot (`.`) because it's
reserved for future use