<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[chuohuo5156的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/chuohuo5156</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; chuohuo5156]]></copyright><item><title><![CDATA[MongoDB简单笔记四]]></title><link>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766635</link><guid>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766635</guid><author>chuohuo5156</author><pubDate>Sun, 31 Jul 2011 19:50:00 +0800</pubDate><description><![CDATA[索引index，注意不要为每个KEY都加上index，这样虽然查询快，但是插入的话速度就大大降低了 
//对people中的username建立索引,多个索引用逗号隔开，1或－1表示建立索引的顺序
db.people.ensureIndex({"username" : 1}) 
//对embe...]]></description><category></category></item><item><title><![CDATA[MongoDB简单笔记三]]></title><link>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766632</link><guid>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766632</guid><author>chuohuo5156</author><pubDate>Sat, 30 Jul 2011 17:24:00 +0800</pubDate><description><![CDATA[用findAndModify可以解决多线程争用问题，不知道这词用的对不对，反正自己明白就好了 
用在update上 
ps = db.runCommand({"findAndModify" : "processes",
               "query"...]]></description><category></category></item><item><title><![CDATA[MongoDB简单笔记一]]></title><link>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766628</link><guid>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766628</guid><author>chuohuo5156</author><pubDate>Fri, 29 Jul 2011 19:15:00 +0800</pubDate><description><![CDATA[先去MongoDB的官方下载http://www.mongodb.org/downloads，我这里下的是LINUX 32－BIT 1.8.2的版本。 
下完文件名为mongodb-linux-i686-1.8.2.tgz 
解压 tar xzvf mongodb-linux-i686-1.8...]]></description><category></category></item><item><title><![CDATA[MongoDB简单笔记二]]></title><link>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766625</link><guid>https://blog.youkuaiyun.com/chuohuo5156/article/details/100766625</guid><author>chuohuo5156</author><pubDate>Fri, 29 Jul 2011 19:14:00 +0800</pubDate><description><![CDATA[看MongoDB: The Definitive Guide做的笔记，Not a tutorial 
Mongodb中有document,collection,database 
关系为database里有多个collection,每个collection里有多个document 
docum...]]></description><category></category></item></channel></rss>