http://blog.thematice.com 发现自己的脑袋不好使了，用blog来记录真的很好用。 Wed, 01 Feb 2012 05:33:00 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://blog.thematice.com/html/y2009/12/18/914/%e4%bd%bf%e7%94%a8memcached%e5%81%9a%e6%95%b0%e6%8d%ae%e5%ba%93%e7%82%b9%e5%87%bb%e6%95%b0%e7%bb%9f%e8%ae%a1%e7%bc%93%e5%86%b2.html#utm_source=rss&utm_medium=rss&utm_campaign=%25e4%25bd%25bf%25e7%2594%25a8memcached%25e5%2581%259a%25e6%2595%25b0%25e6%258d%25ae%25e5%25ba%2593%25e7%2582%25b9%25e5%2587%25bb%25e6%2595%25b0%25e7%25bb%259f%25e8%25ae%25a1%25e7%25bc%2593%25e5%2586%25b2 http://blog.thematice.com/html/y2009/12/18/914/%e4%bd%bf%e7%94%a8memcached%e5%81%9a%e6%95%b0%e6%8d%ae%e5%ba%93%e7%82%b9%e5%87%bb%e6%95%b0%e7%bb%9f%e8%ae%a1%e7%bc%93%e5%86%b2.html#comments Fri, 18 Dec 2009 09:53:47 +0000 稀饭 http://blog.thematice.com/?p=914 http://blog.thematice.com/html/y2009/12/18/914/%e4%bd%bf%e7%94%a8memcached%e5%81%9a%e6%95%b0%e6%8d%ae%e5%ba%93%e7%82%b9%e5%87%bb%e6%95%b0%e7%bb%9f%e8%ae%a1%e7%bc%93%e5%86%b2.html/feed 2 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http://blog.thematice.com/html/y2009/12/02/884/httpwatch%e5%bc%95%e7%94%a8swfobject%e7%9a%84%e9%a1%b5%e9%9d%a2%e4%ba%a7%e7%94%9ferror-0x57%e9%94%99%e8%af%af.html#utm_source=rss&utm_medium=rss&utm_campaign=httpwatch%25e5%25bc%2595%25e7%2594%25a8swfobject%25e7%259a%2584%25e9%25a1%25b5%25e9%259d%25a2%25e4%25ba%25a7%25e7%2594%259ferror-0x57%25e9%2594%2599%25e8%25af%25af http://blog.thematice.com/html/y2009/12/02/884/httpwatch%e5%bc%95%e7%94%a8swfobject%e7%9a%84%e9%a1%b5%e9%9d%a2%e4%ba%a7%e7%94%9ferror-0x57%e9%94%99%e8%af%af.html#comments Wed, 02 Dec 2009 08:32:59 +0000 稀饭 http://blog.thematice.com/?p=884 http://blog.thematice.com/html/y2009/12/02/884/httpwatch%e5%bc%95%e7%94%a8swfobject%e7%9a%84%e9%a1%b5%e9%9d%a2%e4%ba%a7%e7%94%9ferror-0x57%e9%94%99%e8%af%af.html/feed 0 http://blog.thematice.com/html/y2009/12/02/868/lighttpd-%e7%9a%84%e5%ae%89%e8%a3%85%e9%85%8d%e7%bd%ae.html#utm_source=rss&utm_medium=rss&utm_campaign=lighttpd-%25e7%259a%2584%25e5%25ae%2589%25e8%25a3%2585%25e9%2585%258d%25e7%25bd%25ae http://blog.thematice.com/html/y2009/12/02/868/lighttpd-%e7%9a%84%e5%ae%89%e8%a3%85%e9%85%8d%e7%bd%ae.html#comments Wed, 02 Dec 2009 02:04:46 +0000 稀饭 http://blog.thematice.com/?p=868 http://blog.thematice.com/html/y2009/12/02/868/lighttpd-%e7%9a%84%e5%ae%89%e8%a3%85%e9%85%8d%e7%bd%ae.html/feed 0 http://blog.thematice.com/html/y2009/10/25/782/erlang%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e7%9a%84%e5%87%a0%e4%b8%aa%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98%e5%92%8c%e6%b3%a8%e6%84%8f%e7%82%b9.html#utm_source=rss&utm_medium=rss&utm_campaign=erlang%25e7%25bd%2591%25e7%25bb%259c%25e7%25bc%2596%25e7%25a8%258b%25e7%259a%2584%25e5%2587%25a0%25e4%25b8%25aa%25e6%2580%25a7%25e8%2583%25bd%25e8%25b0%2583%25e4%25bc%2598%25e5%2592%258c%25e6%25b3%25a8%25e6%2584%258f%25e7%2582%25b9 http://blog.thematice.com/html/y2009/10/25/782/erlang%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e7%9a%84%e5%87%a0%e4%b8%aa%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98%e5%92%8c%e6%b3%a8%e6%84%8f%e7%82%b9.html#comments Sun, 25 Oct 2009 01:28:45 +0000 稀饭 http://blog.thematice.com/?p=782 http://blog.thematice.com/html/y2009/10/25/782/erlang%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%e7%9a%84%e5%87%a0%e4%b8%aa%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98%e5%92%8c%e6%b3%a8%e6%84%8f%e7%82%b9.html/feed 0 http://blog.thematice.com/html/y2009/09/29/709/%e8%bd%ac-memcache%e5%88%86%e6%9e%90%e8%b0%83%e8%af%95-php.html#utm_source=rss&utm_medium=rss&utm_campaign=%25e8%25bd%25ac-memcache%25e5%2588%2586%25e6%259e%2590%25e8%25b0%2583%25e8%25af%2595-php http://blog.thematice.com/html/y2009/09/29/709/%e8%bd%ac-memcache%e5%88%86%e6%9e%90%e8%b0%83%e8%af%95-php.html#comments Mon, 28 Sep 2009 17:08:55 +0000 稀饭 http://blog.thematice.com/?p=709 it_flags & ITEM_LINKED) == 0); assert(it != heads[it->slabs_clsid]); assert(it != tails[it->slabs_clsid]); assert(it->refcount == 0); it->slabs_clsid = 0; it->it_flags |= ITEM_SLABBED; slabs_free(it, ntotal); } 做一个轮流存储的机制使用预分配的内存,这样的好处是其他地方不需要做任何修改就可以了,当然你可以在源代码中加入上面的代码,并将它们放在一个自定义的宏后面. 3. 加速比. 加速比,也即事件的处理效率.是否可以修改libevent的事件处理效率,需要研究.如果内存空间很大,可以将freeconn的数值调大,增加预分配的conn内存大小. 是否可以将memcache做成多线程处理,但在处理多线程数据同步是个问题. 如果有时间,愿意来试试这个策略. 4. 安全性能. memcache还存在一个比较显著的问题,那就是其安全性能.只要了解memcache监听的端口,对于能够使用分布式memcache进行数据通信的网络环境的机器,都可以通过memcache协议于memcache服务器进行通信,获取或种植数据.不能保证种植进内存里的数据不会被别有心意的人再利用.也不能保证服务器的内存不被漫天遍地的垃圾数据所堆积,造成命中极低. memcache的设计理念在一个轻字,如果对每次Client的通讯需要校验身份,那么恐怕memcache也就达不到其想要的效果了.存在解决办法缓解这个问题,一般而言,需要使用memcache服务的机器,可以在Server维持一张红色列表.这张表上的机器便可以获取服务.很显然,memcache并非任意Client都能访问,只有信任的机器访问,那么为什么不将这些信任的机器放在一个/etc/mem_passwd下呢. 还有,memcached走udp时,很大几率接受到upd时,都会使服务死掉,特别是set,add,replace时,这个问题需要去考究一下.不过没有时间了. 4.memcache测试分析 服务器端memcache在命令行运行的参数: 引用 # memcached –d –m 512 –l *.*.*.* -u ** -f 1.00001 –n 16 –c [...]]]> http://blog.thematice.com/html/y2009/09/29/709/%e8%bd%ac-memcache%e5%88%86%e6%9e%90%e8%b0%83%e8%af%95-php.html/feed 0 http://blog.thematice.com/html/y2009/09/23/719/rsync%e7%ae%80%e5%8d%95%e5%ad%a6%e4%b9%a0.html#utm_source=rss&utm_medium=rss&utm_campaign=rsync%25e7%25ae%2580%25e5%258d%2595%25e5%25ad%25a6%25e4%25b9%25a0 http://blog.thematice.com/html/y2009/09/23/719/rsync%e7%ae%80%e5%8d%95%e5%ad%a6%e4%b9%a0.html#comments Wed, 23 Sep 2009 04:04:46 +0000 稀饭 http://blog.thematice.com/?p=719 http://blog.thematice.com/html/y2009/09/23/719/rsync%e7%ae%80%e5%8d%95%e5%ad%a6%e4%b9%a0.html/feed 0 http://blog.thematice.com/html/y2009/09/19/690/dell-r410-%e7%9b%ae%e5%89%8d%e5%af%b9rhelcetnos%e7%b3%bb%e5%88%97%e6%94%af%e6%8c%81%e4%b8%8d%e5%a4%aa%e5%a5%bd%ef%bc%8c%e9%9c%80%e8%a6%81%e8%87%aa%e5%b7%b1%e6%89%8b%e5%8a%a8%e5%8e%bb%e6%9b%b4.html#utm_source=rss&utm_medium=rss&utm_campaign=dell-r410-%25e7%259b%25ae%25e5%2589%258d%25e5%25af%25b9rhelcetnos%25e7%25b3%25bb%25e5%2588%2597%25e6%2594%25af%25e6%258c%2581%25e4%25b8%258d%25e5%25a4%25aa%25e5%25a5%25bd%25ef%25bc%258c%25e9%259c%2580%25e8%25a6%2581%25e8%2587%25aa%25e5%25b7%25b1%25e6%2589%258b%25e5%258a%25a8%25e5%258e%25bb%25e6%259b%25b4 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http://blog.thematice.com/html/y2009/09/19/688/a-patch-to-fix-vu180065-vulnerability-in-010-0814.html/feed 0 http://blog.thematice.com/html/y2009/09/19/686/development-versions-are-nginx-0815-nginxwindows-0815-the-change-log.html#utm_source=rss&utm_medium=rss&utm_campaign=development-versions-are-nginx-0815-nginxwindows-0815-the-change-log http://blog.thematice.com/html/y2009/09/19/686/development-versions-are-nginx-0815-nginxwindows-0815-the-change-log.html#comments Sat, 19 Sep 2009 12:22:08 +0000 稀饭 http://blog.thematice.com/?p=686 http://blog.thematice.com/html/y2009/09/19/686/development-versions-are-nginx-0815-nginxwindows-0815-the-change-log.html/feed 0 http://blog.thematice.com/html/y2009/09/19/684/the-latest-stable-versions-are-nginx-0762-nginxwindows-0762-the-change-log.html#utm_source=rss&utm_medium=rss&utm_campaign=the-latest-stable-versions-are-nginx-0762-nginxwindows-0762-the-change-log 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http://blog.thematice.com/html/y2007/11/09/19/26%e5%86%85%e6%a0%b8%e4%b8%8a%e4%b8%80%e6%ad%a5%e4%b8%80%e6%ad%a5%e9%85%8d%e7%bd%aelvslinux-virtual-server-%e8%bd%ac.html#utm_source=rss&utm_medium=rss&utm_campaign=26%25e5%2586%2585%25e6%25a0%25b8%25e4%25b8%258a%25e4%25b8%2580%25e6%25ad%25a5%25e4%25b8%2580%25e6%25ad%25a5%25e9%2585%258d%25e7%25bd%25aelvslinux-virtual-server-%25e8%25bd%25ac http://blog.thematice.com/html/y2007/11/09/19/26%e5%86%85%e6%a0%b8%e4%b8%8a%e4%b8%80%e6%ad%a5%e4%b8%80%e6%ad%a5%e9%85%8d%e7%bd%aelvslinux-virtual-server-%e8%bd%ac.html#comments Fri, 09 Nov 2007 05:54:20 +0000 稀饭 http://www.gruelstate.cn/index.php/2007/11/09/26%e5%86%85%e6%a0%b8%e4%b8%8a%e4%b8%80%e6%ad%a5%e4%b8%80%e6%ad%a5%e9%85%8d%e7%bd%aelvslinux-virtual-server-%e8%bd%ac/ http://blog.thematice.com/html/y2007/11/09/19/26%e5%86%85%e6%a0%b8%e4%b8%8a%e4%b8%80%e6%ad%a5%e4%b8%80%e6%ad%a5%e9%85%8d%e7%bd%aelvslinux-virtual-server-%e8%bd%ac.html/feed 0