Is is written in NodeJS,using express.js for MVC framework,and using MySQL for storage and Redis for caching.
A demo online: http://fnil.me/
The project is at https://github.com/killme2008/node-shorten
Feel free to modify and use it.Have fun.
dennis 2012-11-25 20:31 å‘表评论
]]>A Clojure library designed to render velocity template for ring in clojure.
Usage
Adds dependency in leiningen project.clj:
[ring.velocity "0.1.0-SNAPSHOT"] Create a directory named templates in your project directory to keep all velocity templates.
Create a template templates/test.vm:
hello,$name,your age is $age. Use ring.velocity in your namespace:
(use '[ring.velocity.core :only [render]]) Use render function to render template with vars:
(render "test.vm" :name "dennis" :age 29) The test.vm will be interpreted equals to:
hello,dennis,your age is 29. Use ring.velocity in compojure:
(defroutes app-routes
(GET "/" [] (render "test.vm" :name "dennis" :age 29))
(route/not-found "Not Found")) Use ring.velocity in ring:
(use '[ring.util.response])
(response (render "test.vm" :name "dennis" :age 29)) Custom velocity properties,just put a file named ring-velocity.properties to your classpath or resource paths.The default velocity properties is in src/default/velocity.properties.
License
Copyright © 2012 dennis zhuang[killme2008@gmail.com]
Distributed under the Eclipse Public License, the same as Clojure.
Home: https://github.com/killme2008/ring.velocity
dennis 2012-07-18 00:07 å‘表评论
]]>1.支æŒå‘é€å’Œè®¢é˜…分离åQŒå¯ä»¥ç»†¾_’度地控制Broker或者æŸä¸ªTopic是å¦æŽ¥æ”¶æ¶ˆæ¯å’ŒæŽ¥å—订阅。æœåŠ¡ç«¯æ·ÕdŠ 新选项acceptPublishå’ŒacceptSubscribeã€?br />
2.æ›´å‹å¥½åœ°å…³é—BrokeråQŒæ¢³ç†å…³é—æµ½E‹åƈ通过JMX调用æ–ÒŽ(gu¨©)³•å…³é—替代原楽Ž€å•çš„killã€?br />
3.æ›´æ–°python客户ç«?/a>åˆ?.2版本åQŒå¯ä»¥é€šè¿‡pip安装: pip install metaq
4.å‘布r(ji¨¤)ubyè¯è¨€å®¢æˆ·ç«?a style="color: #006699; ">meta-ruby 0.1版本ã€?br />
5.其他ž®æ”¹˜q›ï¼š(x¨¬)å‡çñ”geckoåˆ?.1.1版本åQŒå‡¾U§quartzåˆ?.1.4版本åQŒæ·»åŠ 集æˆæµ‹è¯•å·¥½E‹å’Œå†…部é‡æž„½{‰ã€?br />
6.æ–°æ–‡æ¡?a >《ä‹É用log4j扩展å‘é€æ¶ˆæ¯ã€?/a>
½Ž€ä»‹ï¼š(x¨¬)https://github.com/killme2008/Metamorphosis/wiki/介ç»
下è²åQ?a style="color: #006699; ">https://github.com/killme2008/Metamorphosis/downloads
文档åQ?a style="color: #006699; ">https://github.com/killme2008/Metamorphosis/wiki
dennis 2012-06-04 10:03 å‘表评论
]]>My weekend project clj.monitor is beta release,it's a clojure DSL for monitoring system and applications based on SSH.
Home:https://github.com/killme2008/clj.monitor
An example:
(ns clj.monitor.example
(:use [clj.monitor.core]
[control.core]
[clj.monitor.tasks]))
;;define a mysql cluster
(defcluster mysql
:clients [{:user "deploy" :host "mysql.app.com"}])
;;define a monitor for mysql cluster
(defmonitor mysql-monitor
:tasks [(ping-mysql "root" "password")
(system-load :5 3)]
:clusters [:mysql])
;;start monitors
(start-monitors
:cron "* 0/5 * * * ?"
:alerts [(mail :from "alert@app.com" :to "yourname@app.com")]
:monitors [mysql-monitor])
(:use [clj.monitor.core]
[control.core]
[clj.monitor.tasks]))
;;define a mysql cluster
(defcluster mysql
:clients [{:user "deploy" :host "mysql.app.com"}])
;;define a monitor for mysql cluster
(defmonitor mysql-monitor
:tasks [(ping-mysql "root" "password")
(system-load :5 3)]
:clusters [:mysql])
;;start monitors
(start-monitors
:cron "* 0/5 * * * ?"
:alerts [(mail :from "alert@app.com" :to "yourname@app.com")]
:monitors [mysql-monitor])
API document: http://fnil.net/clj.monitor
It is just a beta release,if you have any questions or find issues ,please let me know,thanks.
dennis 2012-05-12 22:38 å‘表评论
]]>1.æ·ÕdŠ 了大é‡çš„使用和原ç†æ–‡æ¡£ï¼Œå‚è§Wikiã€?br /> 2.åˆåƈtoolså’Œserver-wrapper工程åQŒæ供统一的脚本楽Ž¡ç†BrokeråQŒç®¡ç†Broker的工作å˜å¾—éžå¸¸å®¹æ˜“，全部工作都å¯ä»¥é€šè¿‡metaServer.sh的脚本æ¥æ‰§è¡Œã€‚åŒæ—¶æ供了batå¯åŠ¨è„šæœ¬åQŒç”¨äºŽåœ¨windows上å¯åŠ¨Brokeråšæµ‹è¯•ã€?br /> 3.新功能：(x¨¬)
åQ?åQ‰æ–°çš„客æˆïL(f¨¥ng)«¯API用æ¥èŽ·å–topic的分区列è¡?br /> åQ?åQ‰æ–°çš„客æˆïL(f¨¥ng)«¯API用æ¥èŽ·å–Broker的统计信æ?br /> åQ?åQ‰å¼‚æ¥å¤åˆ¶çš„Slaveå¯ä»¥è‡ªåŠ¨èŽ·å–Masterçš„é…¾|®å˜æ›ß_(d¨¢)¼Œä¾‹å¦‚Master在酾|®æ–‡ä»¶ä¸æ–°å¢žæˆ–è€…åˆ é™¤äº†topicòq‰™¡ºåˆ©reloadçƒåŠ è½½æˆåŠŸåŽåQŒslaveå¯è‡ªåŠ¨å¤åˆ¶æˆ–者移除å˜æ›´çš„topicåQŒæ— 需é‡å¯ã€?br /> åQ?åQ‰æ–°çš„统计项目，å¯ä»¥é€šè¿‡'stats config'å议获å–Brokerçš„é…¾|®æ–‡ä»¶ã€?br /> 4.æ·ÕdŠ meta-python™å¹ç›®åQŒä¸€ä¸ªpython的客æˆïL(f¨¥ng)«¯åQŒæš‚时仅支æŒå‘é€æ¶ˆæ¯åŠŸèƒ½ã€?br /> 5.其他ž®æ”¹˜q›ï¼Œå¦‚统计信æ¯çš„优化ã€æž„建工å…ïL(f¨¥ng)š„整刽{‰ã€?br />
更详¾l†çš„å‘行日志è¯ïL(f¨¥ng)œ‹RelaseNotesã€?br />
下è²åœ°å€åQ? https://github.com/killme2008/Metamorphosis/downloads
入门指å—åQ? ã€?a >如何开å§?/a>ã€?br /> 更多文档è¯ïL(f¨¥ng)œ‹Wikiã€?img src ="http://www.aygfsteel.com/killme2008/aggbug/377748.html" width = "1" height = "1" />
dennis 2012-05-09 22:47 å‘表评论
]]>主è¦æ”¹è¿›å¦‚下åQ?/strong>
1. 为MemcachedClientBuilderæ·ÕdŠ 两个新方法用于酾|®ï¼š(x¨¬)
public void setConnectTimeout(long connectTimeout);
public void setSanitizeKeys(boolean sanitizeKeys);
public void setSanitizeKeys(boolean sanitizeKeys);
2. 用于hibernateçš„XmemcachedClientFactorydæ·ÕdŠ 了connectTimeout属性，感谢¾|‘å‹ Boli.Jiangçš„èµA(ch¨³)献ã€?/span>
3. æ·ÕdŠ æ–°çš„æžšä‹D¾cÕdž‹ net.rubyeye.xmemcached.transcoders.CompressionModeåQŒç”¨äºŽæŒ‡å®šTranscoder的压¾~©ç±»åž‹ï¼Œé»˜è®¤æ˜¯ZIP压羃åQŒå¯é€‰æ‹©GZIP压羃。Transcoder接å£æ·ÕdŠ setCompressionModeæ–ÒŽ(gu¨©)³•ã€?/p>
4. 修改心蟩规则åQŒåŽŸæ¥æ˜¯åœ¨è¿žæŽ¥ç©ºé—²çš„时候å‘起心跻I¼ŒçŽ°åœ¨å˜æˆå›ºå®šæ¯éš”5¿U’å‘起一‹Æ¡å¿ƒè·Ïx£€‹¹‹è¿žæŽ¥ã€?/p>
5. 修改默认å‚æ•°åQŒé»˜è®¤ç¦ç”¨nagle½Ž—法åQŒé»˜è®¤å°†æ‰šw‡getçš„åˆòq¶å› å下é™åˆ°50ã€?/p>
6. ä¿®å¤bug和改˜q›ï¼ŒåŒ…括åQ?a target="_blank" style="color: #006699; ">161ã€?a target="_blank" style="color: #006699; ">163ã€?a target="_blank" style="color: #006699; ">165ã€?a target="_blank" style="color: #006699; ">169ã€?a target="_blank" style="color: #006699; ">172ã€?73ã€?a target="_blank" style="color: #006699; ">176ã€?a target="_blank" style="color: #006699; ">179å’?a target="_blank" style="color: #006699; ">180ã€?/p>
™å¹ç›®ä¸»é¡µåQ?a target="_blank" style="color: #006699; ">http://code.google.com/p/xmemcached/
™å¹ç›®æ–‡æ¡£åQ?a target="_blank" style="color: #006699; ">http://code.google.com/p/xmemcached/w/list
下è²åQ?a target="_blank" style="color: #006699; ">http://code.google.com/p/xmemcached/downloads/list
æºç åQ?a target="_blank" style="color: #006699; ">https://github.com/killme2008/xmemcached
Mavenä¾èµ–åQ?/strong>
<dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.6</version>
</dependency>
<artifactId>xmemcached</artifactId>
<version>1.3.6</version>
</dependency>
最åŽæ„Ÿè°¢æ‰€æœ‰æ出issue和改˜q›æ„è§çš„朋å‹ä»¬ã€?img src ="http://www.aygfsteel.com/killme2008/aggbug/372179.html" width = "1" height = "1" />
dennis 2012-03-19 10:51 å‘表评论
]]>I am pleased to annoucment that clojure-control 0.3.0 is out.It adds some powerful features in this release ,includes:
- ssh and scp both have a new option :sudo to be executed as root on remote machines,for example:
(ssh "/etc/init.d/ssh restart" :sudo true) - scp has a new option :mode to change file modes copied from local:
(scp "start.sh" "/etc/init.d/start.sh" :sudo true :mode 755) - A new function "exists?" to test if a file exists on remote machines:
(if (not (exists? (str "/home/deploy/.ssh"))) (ssh (sudo (str "mkdir -p /home/deploy/.ssh")))) - Call other task in deftask with "call" function:
(deftask :ps "A task to grep process" [process] (ssh (str "ps aux | grep " process))) (deftask :start_ha [] (ssh "/etc/init.d/haproxy start") (call :ps "haproxy")) - A new function "append" to append a line to a file on remote machines:
(ssh (append "/etc/hosts" "192.168.1.100 web" :sudo true)) - A new function "sed" to replace lines in a file on remote machines,and comm/uncomm to comment/uncomment a line in a file:
(sed <file> <before> <after> :flags <flags> :limit <limit> :backup <backup>)Equivalent to
sed -i<backup> -r -e "<limit> s/<before>/<after>/<flags>g <filename>" Limits max output line to 10000.
Adds more documents in wiki: https://github.com/killme2008/
clojure-control/wiki
lein plugin install control 0.3.0 #For clojure 1.3
lein plugin install control 0.3.1 #For clojure 1.2
lein plugin install control 0.3.1 #For clojure 1.2
More information please visit it on github: https://github.com/killme2008/clojure-control dennis 2012-02-18 22:08 å‘表评论
]]>clj-xmemcached
Clj-xmemcached is an opensource memcached client for clojure wrapping xmemcached. Xmemcached is an opensource high performance memcached client for java.
Leiningen Usage
To include clj-xmemcached,add:
[clj-xmemcached "0.1.1"]
to your project.clj.
Usage
Create a client
(use [clj-xmemcached.core])
(def client (xmemcached "host:port"))
(def client (xmemcached "host1:port1 host2:port2" :protocol "binary"))
(def client (xmemcached "host:port"))
(def client (xmemcached "host1:port1 host2:port2" :protocol "binary"))
Then we create a memcached client using binary protocol to talk with memcached servers host1:port1 and host2:port2. Valid options including:
:name Client's name
:protocol Protocol to talk with memcached,a string value in text,binary or kestrel,default is text protocol.
:hash Hash algorithm,a string value in consistent or standard,default is standard hash.
:timeout Operation timeout in milliseconds,default is five seconds.
:pool Connection pool size,default is one.
Store items
(xset client "key" "dennis")
(xset client "key" "dennis" 100)
(xappend client "key" " zhuang")
(xprepend client "key" "hello,")
(xset client "key" "dennis" 100)
(xappend client "key" " zhuang")
(xprepend client "key" "hello,")
The value 100 is the expire time for the item in seconds.Store functions include xset,xadd,xreplace,xappend and xprepend.Please use doc to print documentation for these functions.
Get items
(xget client "key")
(xget client "key1" "key2" "key3")
(xgets client "key")
(xget client "key1" "key2" "key3")
(xgets client "key")
xgets returns a value including a cas value,for example:
{:value "hello,dennis zhuang", :class net.rubyeye.xmemcached.GetsResponse, :cas 396}
And bulk get returns a HashMap contains existent items.
Increase/Decrease numbers
(xincr client "num" 1)
(xdecr client "num" 1)
(xincr client "num" 1 0)
(xdecr client "num" 1)
(xincr client "num" 1 0)
Above codes try to increase/decrease a number in memcached with key "num",and if the item is not exists,then set it to zero.
Delete items
(xdelete client "num")
Compare and set
(xcas client "key" inc)
We use inc function to increase the current value in memcached and try to compare and set it at most Integer.MAX_VALUE times.
xcas can be called as:
(xcas client key cas-fn max-times)
The cas-fn is a function to return a new value,set the new value to
(cas-fn current-value)
Shutdown
(xshutdown client)
Flush
(xflush client)
(xflush client (InetSocketAddress. host port))
(xflush client (InetSocketAddress. host port))
Statistics
(xstats client)
Example
Please see the example code in example/demo.clj
License
Copyright (C) 2011-2014 dennis zhuang[killme2008@gmail.com]
Distributed under the Eclipse Public License, the same as Clojure.
dennis 2011-10-30 13:03 å‘表评论
]]>一 Java相关
1.XmemcachedåQŒè¿˜½Ž—是比较多äh使用的一个java memcached clientåQŒä¼˜ç‚ÒŽ(gu¨©)˜¯æ•ˆçŽ‡å’Œæ˜“用性，¾~ºç‚¹æ˜¯ä»£ç 写的ä¸æ€Žä¹ˆæ øP¼Œä¸¤å¹´å‰å‘展到现在的东西，以厘q˜ä¼š(x¨¬)¾l§ç®‹¾l´æŠ¤ã€?br />
2.HS4JåQŒçœ‹handlersocket的时候顺手写的客æˆïL(f¨¥ng)«¯åQŒæˆ‘们公å¸å†…部æŸäº›é¡¹ç›®åœ¨ç”¨ï¼Œå¯èƒ½˜q˜æœ‰å…¶ä»–å…¬å¸å¤–的朋å‹åœ¨ç”¨åQŒåŽæ¥åŒäº‹èšçŸŒ™µA(ch¨³)献了一个扩展项ç›?a >hs4j-kitåQŒæ›´æ˜“于使用åQŒä»–写的代ç 很优雅漂亮，推è一看。暂时没有精力维护ã€?br />
3.AviatoråQŒä¸€ä¸ªå¾ˆåˆçñ”的表辑ּ执行引擎åQŒè¡Œå®¶çœ‹åˆ°è‚¯å®šè¦½W‘è¯æˆ‘。丘q‡è¯æ³•ä¸Šå¾ˆç¬¦åˆæˆ‘自己的å£å‘»I¼Œæˆ‘ä»¬è‡ªå·±çš„é¡¹ç›®åœ¨ç”¨ï¼Œä¹Ÿæœ‰å‡ ä¸ªæœ‹å‹åœ¨ç”¨åQŒä¼š(x¨¬)¾l§ç®‹¾l´æŠ¤ã€?br />
4.JeventåQŒä¸€ä¸ªçŽ©å…øP¼Œå…¶å®žæ˜¯æ¨¡ä»¿libevent的一个java实现åQŒå¯¹nio或者libevent的实现机制感兴趣的还å¯ä»¥çœ‹çœ‹ã€?br />
5. KilimåQŒæˆ‘forkçš„kilim实现åQŒä¿®æ”¹äº†nio调度器，使用多个reactoråšè°ƒåº¦æ•ˆçŽ‡æ›´é«˜ï¼Œòq¶æ·»åŠ 了一个HttpClient的实现ã€?br />
äº?Android™å¹ç›®
å¦ä¹ (f¨¤n)android完全是玩¼œ¨æ€§è´¨åQŒæœ‰3个项目，对åˆå¦androidå¼€å‘çš„å¯èƒ½æœ‰ç‚¹å‚考äh(hu¨¢n)倹{€?br />
1.WhetherWeatheråQŒä¸€ä¸ªå¤©æ°”预报和告è¦çš„widgetæ’äšgåQŒUI太丑了ã€?br />2.UniqRecorderåQŒå†™æ¥è®°å½•å„¿å体é‡å˜åŒ–çš„ž®å·¥å…øP¼Œå¯ä»¥è‡ªå®šä¹‰é¡¹ç›®å’Œç”Ÿæˆæ›²çº¿å›¾ï¼Œæˆ‘自å·Þp¿˜åœ¨ç”¨ã€?br />3.UniqTaskåQŒæœ€˜q‘写的怘q›ç¨‹å·¥å…·åQŒç»å¯¹è½»é‡çñ”åQŒæ²¡òq¿å‘ŠåQŒä¹Ÿæ˜¯æˆ‘自己在用ã€?br />
ä¸?Clojure™å¹ç›®
1.cschemeåQŒä¸€ä¸ªç”¨clojure实现的scheme解释器，åŸÞZºŽsicp˜q™æœ¬ä¹¦çš„解释器实现ã€?br />2.clojure-controlåQŒç±»ä¼?a >node-control的分布å¼éƒ¨çÖv和管ç†çš„DSL实现åQŒæŒºå¥½çŽ©çš„，也有朋å‹åœ¨ç”¨åQŒæˆ‘自己˜q˜ç”¨ä¸ä¸Š,sunny有写了个很方便的leinæ’äšgnode-controlã€?br />
clojure˜q˜å†™äº†ä¸€å †çƒ‚ž®ùN¡¹ç›®ï¼Œž®×ƒ¸æ‹¿å‡ºæ¥æ¶å¿ƒäh了ã€?br />
�其他
1.node-zk-browseråQŒä¸€ä¸ªå±•çŽ°å’Œ½Ž¡ç†zookeeperçš„web应用åQŒæˆ‘们自己在用，åŸÞZºŽnode.js实现ã€?br />2.erlwshåQŒä¸€ä¸ªerlangçš„web shell实现åQŒå¯ä»¥åœ¨‹¹è§ˆå™¨é‡Œåšerlang¾~–程åQŒè¢«ä¸€äº›å¼€æºé¡¹ç›®æ¯”如membase用到了ã€?br />
写这些东西对我自己最有好处，如果能顺便给他äh带æ¥å¥½å¤„åQŒé‚£æ˜¯é¢å¤–的好处。最˜q‘æ£å¤„于我自å·×ƒ¸€ç”Ÿä¸ä¹Ÿè®¸æ˜¯æœ€å¤§çš„转折兛_¤´åQŒä¸èƒ½æ›´æ–°blog了，最åŽï¼Œ¼œˆæ±‚诸天¼œžä½›(j¨©ng)能带æ¥å¥‡˜qV€?img src ="http://www.aygfsteel.com/killme2008/aggbug/360311.html" width = "1" height = "1" />
dennis 2011-10-09 20:23 å‘表评论
]]>Issue 154: 在釘qžæœ¬åœ°memcached的时候，有å¯èƒ½å‡ºçŽ°é‡˜qžæ— 法æˆåŠŸçš„情况åQŒå¯¼è‡´è¿žæŽ¥ä¸¢å¤±ï¼Œè¯¦æƒ…è§?a >˜q™é‡Œã€?br />Issue 155: é‡è¿žå¯ÆD‡´æ–‡äšgå¥æŸ„数超˜q‡é™åˆ¶çš„bugåQŒè¿™æ˜¯ç”±äºŽé‡˜qžå¤±è´¥æƒ…况下没有åˆç†å…³é—socket引è“v的，详情è§?a >˜q™é‡Œã€?br />
å¦‚æžœä½ ä‹É用mavenåQŒç®€å•å‡¾U§ç‰ˆæœ¬å³å¯ï¼š(x¨¬)
<dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.5</version>
</dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.5</version>
</dependency>
下è²åœ°å€åQ?a >http://code.google.com/p/xmemcached/downloads/list
æ¤ç‰ˆæœ¬æŽ¨è凾U§ï¼Œæœ€åŽæ„Ÿè°¢ä¸¤ä½è€å¤–å¼€å‘者的帮助åQ? ilkinulaså’?a >MrRubato
dennis 2011-10-01 15:11 å‘表评论
]]>我一直很ä¸çˆ½androidçš„ESä»ÕdŠ¡½Ž¡ç†å™¨ï¼Œå®ƒçš„òq¿å‘Šè®„¡½®çš„地斚wžå¸¸æ¶å¿ƒï¼Œž®±æ”¾åœ¨kill键的下é¢åQŒè€Œä¸”æ¯æ¬¡éƒ½çªç„¶èŸ©å‡ºæ¥åQŒè®©ä½ 很å®ÒŽ(gu¨©)˜“错误点击。我很佩æœä»–们能惛_‡º˜q™ç§æ高点击率的办法åQŒä½†æ˜¯åˆæ— 比鄙视˜q™ç§åšæ³•ã€‚今天（哦，ä¸æ˜¯æ˜¨å¤©åQ‰æ™šä¸Šåœ¨twitter上说了，我想自己写个ä»ÕdŠ¡½Ž¡ç†å™¨ï¼Œ¾cÖM¼¼ESä»ÕdŠ¡½Ž¡ç†å™¨ï¼Œòq¶ä¸”没有òq¿å‘Šã€‚那好å§åQŒè¯´òq²å°±òqÔŒ¼Œå¥‹æ–—了一个晚上，¾lˆäºŽæžå‡ºäº†æˆæžœï¼Œ˜q™å°±æ˜¯éš†é‡ç™»åœºçš„UniqTaskåQŒå…ˆçœ‹çœ‹˜q行时截图：(x¨¬)
˜q™æ˜¯˜q行在我的GS2上的截图ã€?br />
UniqTask的功能跟ESä»ÕdŠ¡½Ž¡ç†å™¨çš„功能完全一è‡ß_(d¨¢)¼Œå¯ä»¥è®°å½•kill的历åÔŒ¼Œæ¯æ¬¡å¯åŠ¨UniqTaskçš„æ—¶å€™è‡ªåŠ¨æ ‡è®°è¿‡åŽ»kill˜q‡çš„˜q›ç¨‹ã€‚但是UniqTask完全¾l¿è‰²æ— 毒åQŒç»å¯ÒŽ(gu¨©)²¡æœ‰å¹¿å‘Šï¼Œå’”å’”ã€?br />
è®æ€¹…没写android½E‹åºåQŒæ‹¿èµäh‰‹æ¥ä¸æ˜¯å¾ˆ™åºåˆ©åQŒæŠ˜è…‘Öˆ°çŽ°åœ¨æ‰æžå®šï¼Œæˆ‘将代ç 攑ֈ°äº†github上，也æ供了APK下è²åQŒéžå¸¸æ¬¢˜qŽè¯•ç”¨å•Šã€?br />
æºç 地å€åQ?br /> https://github.com/killme2008/UniqTask
APK下è²åQ?br /> https://github.com/killme2008/UniqTask/blob/master/UniqTask.apk
白天˜q˜æœ‰é‡è¦çš„事情è¦å¤„ç†åQŒç¡è§‰åŽ»äº†ã€?img src ="http://www.aygfsteel.com/killme2008/aggbug/359033.html" width = "1" height = "1" />
dennis 2011-09-20 04:10 å‘表评论
]]>å¼€æºçš„java memcached client—— xmemcachedå‘布1.3.4版本åQŒä¸»è¦æ”¹˜q›å¦‚下：(x¨¬)
1ã€ä¿®å¤ä¸€ä¸ªç›¸å¯¹ä¸¥é‡çš„bugåQŒåœ¨è§£æžäºŒè¿›åˆ¶å议时如果é‡åˆ°ä»ŽæœåŠ¡ç«¯˜q”回的错误信æ¯ï¼Œä¼?x¨¬)导致连接异常æ–å¼€åQ›å¦‚æžœä½ æ²¡æœ‰ä½¿ç”¨binaryåè®®åQŒä¸ä¼?x¨¬)é‡åˆ°æ¤é—®é¢˜ã€?strong>å»ø™®®ä½¿ç”¨xmemcachedòq¶ä¸”使用二进制å议的朋å‹å‡çñ”到æ¤ç‰ˆæœ¬ã€?/strong>
2ã€å…许XMemcachedClientFactoryBeané…ç½®opTimeout选项ã€?
3ã€æ·»åŠ RoundRobinMemcachedSessionLocatoråQŒè½®è¯¢çš„˜qžæŽ¥é€‰æ‹©å™¨ï¼Œä»…用于kestrel或者memcacheq集群åQŒè¿™äº›åº”用都ä¸è¦æ±‚åŒä¸€ä¸ªkeyè¦ä¿å˜åœ¨å›ºå®šçš„æœåŠ¡å™¨ä¸Šï¼Œè€Œä»…是作为集¾Ÿ¤åˆ†æ‹…è´Ÿè½½ã€?/p>
4ã€?a >KetamaMemcachedSessionLocatoræ·ÕdŠ é¢å¤–选项åQŒå…è®?d¨¡ng)R…¾|®æ˜¯å¦å…¼å®?nginx-upstream-consistentåQŒè¿™ä¸ªæ˜¯¾|‘å‹ wolfg1969贡献的patch。如果è¦ä½¿å¾—xmc的一致性哈希算法兼å®?/span>nginx-upstream-consistentåQŒåªè¦è®¾¾|®cwNginxUpstreamConsistent为trueå›_¯åQŒç¤ºèŒƒä»£ç ：(x¨¬)
MemcachedClientBuilder builder = new XMemcachedClientBuilder(
AddrUtil.getAddresses(servers));
builder.setSessionLocator(new KetamaMemcachedSessionLocator(
true));
AddrUtil.getAddresses(servers));
builder.setSessionLocator(new KetamaMemcachedSessionLocator(
true));
5ã€ä¿®å¤bugåQŒåŒ…æ‹?a class="closed_ref" title="Typo in INFO message: log.info("Creating " + selectorPoolSize + " rectors...");" >issue 132 , issue 142 , issue 133 , issue 139 , issue 142 , issue 145 ,issue 150½{‰ã€?/p>
å¦‚æžœä½ ä‹É用mavenåQŒåªè¦ç®€å•å‡¾U§ç‰ˆæœ¬å³å¯ï¼š(x¨¬)
<dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.4</version>
</dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.4</version>
</dependency>
下è²åœ°å€åQ?/p>
http://code.google.com/p/xmemcached/downloads/list
dennis 2011-09-08 18:55 å‘表评论
]]>1.What is clojure-control?
The idea came from node-control.
Define clusters and tasks for system administration or code deployment, then execute them on one or many remote machines.
Clojure-control depends only on OpenSSH and clojure on the local
control machine.Remote machines simply need a standard sshd daemon.
2.Quick example
Get the current date from the two machines listed in the 'mycluster' config with a single command:
(ns samples
(:use [control.core :only [task cluster scp ssh begin]]))
;;define clusters
(cluster :mycluster
:clients [
{ :host "a.domain.com" :user "alogin"}
{ :host "b.domain.com" :user "blogin"}
])
;;define tasks
(task :date "Get date"
[]
(ssh "date"))
;;start running
(begin)
(:use [control.core :only [task cluster scp ssh begin]]))
;;define clusters
(cluster :mycluster
:clients [
{ :host "a.domain.com" :user "alogin"}
{ :host "b.domain.com" :user "blogin"}
])
;;define tasks
(task :date "Get date"
[]
(ssh "date"))
;;start running
(begin)
If saved in a file named "controls.clj",run with
java -cp clojure.jar:clojure-contrib.jar:control-0.1-SNAPSHOT.jar clojure.main controls.clj mycluster date
Each machine execute "date" command ,and the output form the remote
machine is printed to the console.Exmaple console output
Performing mycluster
Performing date for a.domain.com
a.domain.com:ssh: date
a.domain.com:stdout: Sun Jul 24 19:14:09 CST 2011
a.domain.com:exit: 0
Performing date for b.domain.com
b.domain.com:ssh: date
b.domain.com:stdout: Sun Jul 24 19:14:09 CST 2011
b.domain.com:exit: 0
Performing date for a.domain.com
a.domain.com:ssh: date
a.domain.com:stdout: Sun Jul 24 19:14:09 CST 2011
a.domain.com:exit: 0
Performing date for b.domain.com
b.domain.com:ssh: date
b.domain.com:stdout: Sun Jul 24 19:14:09 CST 2011
b.domain.com:exit: 0
Each line of output is labeled with the address of the machine the
command was executed on. The actual command sent and the user used to
send it is displayed. stdout and stderr output of the remote process
is identified as well as the final exit code of the local ssh
command.
3.How to scp files?
Let's define a new task named deploy
(task :deploy "scp files to remote machines"
[]
(scp ("release1.tar.gz" "release2.tar.gz") "/home/alogin/"))
[]
(scp ("release1.tar.gz" "release2.tar.gz") "/home/alogin/"))
Then it will copy release1.tar.gz and release2.tar.gz to remote
machine's /home/alogin directory.
4.Where is it?
Any suggestion or bug reports welcomed.
dennis 2011-07-24 21:48 å‘表评论
]]>aviator是一个轻é‡çñ”çš„ã€é«˜æ€§èƒ½çš„Java表达å¼æ±‚值器åQŒä¸»è¦åº”用在如工作æµå¼•æ“ŽèŠ‚点æ¡äšg判æ–ã€MQä¸çš„消毘q‡æ×o(h¨´)以åŠ(qi¨¢ng)æŸäº›ç‰¹å®šçš„业务场景ã€?/p>
自从上次å‘布1.0åŽï¼Œ˜q˜å‘˜q?.01版本åQŒä¸˜q‡éƒ½æ²¡æ€Žä¹ˆå®£ä¼ 。这‹Æ¡å‘布一ä¸?.0的里½E‹ç¢‘版本åQŒä¸»è¦æ”¹˜q›å¦‚下：(x¨¬)
1ã€å®Œæ•´æ”¯æŒä½˜qç®—½W¦ï¼Œä¸Žjava完全一致。ä½é¢„ç®—½W¦å¯¹å®žçŽ°bit set之类的需求还是éžå¸¸å¿…™åÈš„ã€?
2ã€æ€§èƒ½ä¼˜åŒ–åQŒåã^å‡æ€§èƒ½æå‡100%åQŒå‡½æ•°è°ƒç”¨æ€§èƒ½æå‡200%åQŒæœ€æ–°çš„与groovyå’ŒJEXL的性能‹¹‹è¯•çœ‹è¿™é‡?/p>
http://code.google.com/p/aviator/wiki/Performance
3ã€æ·»åŠ 了新函敎ͼŒåŒ…括longã€doubleã€str用于¾cÕdž‹è½¬æ¢åQŒæ·»åŠ 了string.indexOf函数ã€?/p>
4ã€å®Œå–„了用户手册åQŒæ›´æ–°æ€§èƒ½‹¹‹è¯•ã€?/p>
下è²åœ°å€åQ?nbsp; http://code.google.com/p/aviator/downloads/list
™å¹ç›®ä¸»é¡µåQ?nbsp; http://code.google.com/p/aviator/
用户指å—åQ?nbsp; http://code.google.com/p/aviator/w/list
性能报告åQ?nbsp; http://code.google.com/p/aviator/wiki/Performance
æºç åQ?nbsp; https://github.com/killme2008/aviator
Maven引用åQˆæ„Ÿè°¢è®¸è€å¤§çš„帮助）(j¨ª)åQ?/p>
<dependency>
<groupId>com.googlecode.aviator</groupId>
<artifactId>aviator</artifactId>
<version>2.0</version>
</dependency>
<groupId>com.googlecode.aviator</groupId>
<artifactId>aviator</artifactId>
<version>2.0</version>
</dependency>
˜q™ä¸ª™å¹ç›®ç›®å‰ç”¨åœ¨æˆ‘们的MQ产å“ä¸åšæ¶ˆæ¯˜q‡æ×o(h¨´)åQŒä¹Ÿæœ‰å‡ 个公å¸å¤–的用户告诉我他们也在用，ä¸è¿‡ä¼°è®¡ä¸ä¼š(x¨¬)很多。有˜q™ç§éœ€æ±‚的场景˜q˜æ˜¯æ¯”较?y¨u)®‘的。这个项目实际上是äØ“(f¨´)我们的MQ定制的，我主è¦æƒ³åšåˆ°˜q™ä¹ˆå‡ 点åQ?/p>
åQ?åQ‰æŽ§åˆ¶ç”¨æˆ¯‚ƒ½å¤Ÿä‹É用的函数åQŒä¸å…许调用ä»ÖM½•ä¸å—控制的函数ã€?/p>
åQ?åQ‰è½»é‡çñ”åQŒä¸éœ€è¦åµŒå…¥groovy˜q™ä¹ˆå¤§çš„脚本引擎åQŒæˆ‘们åªéœ€è¦ä¸€ä¸ªå‰ªè£è¿‡çš„表辑ּè¯æ³•å›_¯ã€?/p>
åQ?åQ‰é«˜æ€§èƒ½åQŒæœ€¾lˆçš„性能在æŸäº›åœºæ™¯æ¯”groovy略差åQŒä½†æ˜¯å·²¾léžå¸¸æŽ¥˜q‘ã€?/p>
åQ?åQ‰æ˜“于扩展，å¯ä»¥å®ÒŽ(gu¨©)˜“åœ°æ·»åŠ å‡½æ•°æ‰©å±•åŠŸèƒ½ã€‚è¯æ³•ç›¸å¯¹å›ºå®šã€?/p>
åQ?åQ‰å‡½æ•°çš„调用é¿å…使用åå°„ã€‚å› æ¤æ²¡ä½¿ç”¨dot˜qç®—½W¦çš„函数调用方å¼åQŒè€Œæ˜¯æ›´ç±»ä¼¼cè¯è¨€å’Œluaè¯è¨€çš„å‡½æ•°è°ƒç”¨é£Žæ ¹{€‚函数是一½{‰å…¬æ°‘，seqåº“çš„é£Žæ ¼å¾ˆç¬¦åˆæˆ‘的喜好ã€?/p>
seq˜q™æ¦‚忉|¥è‡ªclojureåQŒæˆ‘ž®†å®žçŽîCº†java.util.Collection接å£çš„类和数¾l„都¿UîCØ“(f¨´)seq集åˆåQŒå¯ä»¥ç»Ÿä¸€ä½¿ç”¨seq库æ“作。例如å‡è®¾æˆ‘有个list:
Map<String, Object> env = new HashMap<String, Object>();
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(3);
list.add(100);
list.add(-100);
env.put("list", list);
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(3);
list.add(100);
list.add(-100);
env.put("list", list);
å¯ä»¥åšè¿™ä¹ˆå‡ 个事情，度é‡å¤§å°åQ?br />
count(list)
判æ–å…ƒç´ æ˜¯å¦å˜åœ¨åQ?br />include(list,3)
˜q‡æ×o(h¨´)å…ƒç´ åQŒè¿”回大äº?çš„å…ƒç´ ç»„æˆçš„seqåQ?br />filter(list,seq.gt(0))
寚w›†åˆé‡Œçš„å…ƒç´ æ±‚å’Œï¼Œåº”ç”¨reduce:reduce(list,+,0)
é历集åˆå…ƒç´ òq¶æ‰“åŽÍ¼š(x¨¬)map(list,println)
最åŽï¼Œä½ 还å¯ä»¥æŽ’åº:sort(list)
˜q™äº›å‡½æ•°¾cÖM¼¼FP里的高阶函数åQŒä‹É用è“væ¥è¿˜æ˜¯éžå¸¸çˆ½çš„ã€?br />
对函数调用的优化åQŒå…¶å®žåªòq²äº†ä¸€ä¸ªäº‹æƒ…，原æ¥å‡½æ•°è°ƒç”¨æˆ‘是ž®†æ‰€æœ‰å‚数收集到一个list里é¢åQŒç„¶åŽå†è½¬æˆæ•°ç»„å…ƒç´ äº¤ç»™AviatorFunction调用。这里创å»ÞZº†ä¸¤ä¸ªä¸´æ—¶å¯¹è±¡åQšlist和数¾l„。这其实是没有必è¦çš„åQŒæˆ‘åªè¦åœ¨AviatorFunction里定义一¾pÕdˆ—é‡è²æ–ÒŽ(gu¨©)³•åQŒå¦‚åQ?br />
public AviatorObject call(Map<String, Object> env);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1, AviatorObject arg2);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1, AviatorObject arg2, AviatorObject arg3);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1, AviatorObject arg2);
public AviatorObject call(Map<String, Object> env, AviatorObject arg1, AviatorObject arg2, AviatorObject arg3);
ž®×ƒ¸éœ€è¦æ”¶é›†å‚敎ͼŒè€Œæ˜¯ç›´æŽ¥invokeinterface调用AviatorFunction相应的é‡è½½æ–¹æ³•å³å¯ã€‚我看到在JRubyå’ŒClojure里的æ–ÒŽ(gu¨©)³•è°ƒç”¨éƒ½è¿™æ ·å¹²çš„。过åŽÈš„æ€èµ\走岔了。最¾lˆä¹Ÿä¸éœ€è¦åŒºåˆ†å†…部的method和外部的functionåQŒç»Ÿä¸€ä¸ÞZ¸€ä¸ªå¯¹è±¡å³å¯ï¼Œ˜q›ä¸€æ¥å‡ž®‘了对象创å¾çš„开销ã€?img src ="http://www.aygfsteel.com/killme2008/aggbug/354296.html" width = "1" height = "1" />
dennis 2011-07-13 22:34 å‘表评论
]]> Nio trick and trap
View more presentations from dennis zhuang
dennis 2011-06-30 11:07 å‘表评论
]]>1ã€memcached 1.6æ·ÕdŠ 了丞®‘æ–°ç‰ÒŽ(gu¨©)€§ï¼Œå…·ä½“å¯ä»¥å‚考《what's new in memcachedã€?1) (2)˜q™ä¸¤ä¸ªå¸–å。xmemcachedž®†åŠ(qi¨¢ng)时跟˜q›è¿™äº›æ–°ç‰ÒŽ(gu¨©)€§ã€?.3.3˜q™ä¸ªç‰ˆæœ¬å®žçŽ°äº†äºŒ˜q›åˆ¶åè®®ä¸æ–°çš„两个命令touchå’ŒGATåQˆget and touch)。这两个功能å¯ä»¥è¯´æ˜¯åƒå‘¼ä¸‡å”¤å§‹å‡ºæ¥ï¼Œ¾lˆäºŽå¯ä»¥ä¸ç”¨get-setæ¥é‡æ–°è®¾¾|®æ•°æ®çš„‘…时旉™—´åQŒåˆ©ç”¨touch或者GATå¯ä»¥½Ž€å•åœ°æ›´æ–°æ•°æ®çš„超时时间ã€?.3.3æ–°å¢žåŠ å››ä¸ªæ–¹æ³•ï¼š(x¨¬)
public boolean touch(final String key, int exp, long opTimeout)
throws TimeoutException, InterruptedException, MemcachedException;
public boolean touch(final String key, int exp) throws TimeoutException,
InterruptedException, MemcachedException;
public <T> T getAndTouch(final String key, int newExp, long opTimeout)
throws TimeoutException, InterruptedException, MemcachedException;
public <T> T getAndTouch(final String key, int newExp)
throws TimeoutException, InterruptedException, MemcachedException;
throws TimeoutException, InterruptedException, MemcachedException;
public boolean touch(final String key, int exp) throws TimeoutException,
InterruptedException, MemcachedException;
public <T> T getAndTouch(final String key, int newExp, long opTimeout)
throws TimeoutException, InterruptedException, MemcachedException;
public <T> T getAndTouch(final String key, int newExp)
throws TimeoutException, InterruptedException, MemcachedException;
å…¶ä¸touch用于讄¡½®æ•°æ®æ–°çš„‘…时旉™—´åQŒgetAndTouch则是在获å–æ•°æ®çš„åŒæ—¶æ›´æ–°‘…时旉™—´ã€‚例如用memcachedå˜å‚¨sessionåQŒå¯ä»¥åœ¨æ¯æ¬¡get的时候更æ–îC¸‹æ•°æ®çš„超时时间æ¥ä¿æ´»ã€?strong>è¯äh³¨æ„，˜q™å››ä¸ªæ–¹æ³•ä»…在ä‹É用memcached 1.6òq¶ä¸”使用二进制å议的时候有æ•?/strong>ã€?br />
2ã€setLoggingLevelVerbosityæ–ÒŽ(gu¨©)³•å¯ä»¥ä½œç”¨äºŽäºŒ˜q›åˆ¶åè®®ã€?/strong>
3ã€é‡æž„错误处ç†æ¨¡å—，使得异常信æ¯æ›´å‹å¥½ã€?/strong>
4ã€å°†KeyIteratorå’ŒgetKeyIterator声明为deprecatedåQ?/strong>å› äØ“(f¨´)memached 1.6ž®†ç§»é™¤stats cachedumpåè®®åQŒåƈ且stats cachedump˜q”回数æ®æœ‰å¤§ž®é™åˆÓž¼Œé历功能ä¸å…·å®žç”¨æ€§ã€?br />
5ã€ä¿®å¤BugåQŒåŒ…æ‹?a title="Error getting memcached Detail Statistics" class="closed_ref" >issue 126 ,issue 127,issue 128,issue 129ã€?br />
下è²åœ°å€åQ?a >http://code.google.com/p/xmemcached/downloads/list
æºç åQ?nbsp; https://github.com/killme2008/xmemcached
maven引用åQ?br />
<dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.3</version>
</dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.3</version>
</dependency>
dennis 2011-06-12 13:32 å‘表评论
]]>我们已ç»å¼€å§‹åœ¨äº§å“使用zookeeper了，那么¾l´æŠ¤å·¥å…·ä¹Ÿå¿…焉™œ€è¦ï¼Œæ‰€è°“兵马未动，¾_®è‰å…ˆè¡Œã€‚请åŒäº‹å¸®å¿™çœ‹è¿‡å‡ 个开æºé¡¹ç›®åŽåQŒåƈ没有特别让äh满æ„çš„ã€?br /> 我想è¦çš„功能比较½Ž€å•ã€‚首先，希望能将zookeeper集群的数æ®å±•½CÞZØ“(f¨´)æ ?w¨¨i)åÅž¾l“æž„åQŒè·Ÿzookeeper模型ä¿æŒä¸€è‡´ã€‚å¯ä»¥é€æ¥å±•å¼€æ¯å±‚的节点，æ¯æ¬¡å±•å¼€éƒ½æ˜¯å»¶è¿ŸåŠ è²ä»Žzk里å–æ•°æ®åQŒè¿™æ ·ä¸ä¼?x¨¬)对zké€ æˆå¤ªå¤§åŽ‹åŠ›ã€‚å…¶‹Æ¡ï¼Œé™¤äº†å±•ç¤ºæ ?w¨¨i)åÅž¾l“构外，我还希望它能展示æ¯ä¸ªpath的属性和数æ®åQŒæ›´˜q›ä¸€æ¥ï¼Œå¦‚果数æ®æ˜¯æ–‡æœ¬çš„åQŒæˆ‘希望它対~–辑。当ç„?d¨°ng)ž¼Œå› äØ?f¨´)¾~–辑功能是比较å±é™©çš„è¡ŒäØ“(f¨´)åQŒæˆ‘˜q˜å¸Œæœ›è¿™ä¸ªç®¡ç†å·¥å…ähœ‰ä¸ªç®€å•çš„授æƒéªŒè¯æœºåˆ¶ã€?br />
最¾lˆï¼Œæˆ‘自己写了这么个东西åQŒå–åäØ“(f¨´)node-zk-browseråQŒåŸºäºŽnode.jsçš?a >express.js框架å’?a >node-zookeeper客户端实现的。我ž®†å®ƒæ”‘Öœ¨äº†githubä¸?br />
https://github.com/killme2008/node-zk-browser
ä½ å¯ä»¥è‡ªå·±æå»ø™¿™ä¸ªå°appåQ?npmå‡ ä¹Žèƒ½å¸®ä½ æžå®šå¤§éƒ¨åˆ†å·¥ä½œã€‚ç•Œé¢ä¸¾ŸŽè§‚åQŒå®žç”¨äØ“(f¨´)ä¸»ï¼Œå‡ å¼ ˜q行时截å›?br />
dennis 2011-06-06 01:13 å‘表评论
]]>fork的分支在åQ?br /> https://github.com/killme2008/node-leveldb
¾~–译node-leveldb之åŽåQŒæ‰§è¡?br />
node memcached-adpater/memcached.js
å›_¯å¯åŠ¨memcached adapteråœ?1211端å£åQŒä½ å¯ä»¥telnet上去‹¹‹è¯•ã€‚ç›®å‰ä»…支æŒget/set/delete/quitåè®®åQŒä¸æ”¯æŒflagå’Œexptimeã€?br />
dennis 2011-05-31 16:45 å‘表评论
]]>HandlerSocket是一个mysqlæ’äšgåQŒå¯ä»¥å°†mysql作äØ“(f¨´)NoSQLæ¥ä‹É用，具体å¯ä»¥çœ‹æˆ‘˜q‡åŽ»å†™çš„˜q™ç¯‡Blogã€?a >hs4j是HandlerSocket的一个java客户端，自认为它比日本äh写的那个客户端更实用和易用一些。写完好久，¾l过ä¸å°‘朋å‹ä½¿ç”¨å’Œæµ‹è¯•ï¼ŒçŽ°åœ¨æ£å¼å‘一ä¸?.1版本åQŒåƈ已åŒæ¥åˆ°mavenä¸å¿ƒä»“库ã€?br />
™å¹ç›®ä¸»é¡µåQ?a title="http://code.google.com/p/hs4j/" >http://code.google.com/p/hs4j/
™å¹ç›®æè¿°åQšhs4j is a practical java client for HandlerSocket,it is nio based and turned to get better performance.
使用文档åQ?a >http://code.google.com/p/hs4j/w/list
下è²åœ°å€åQ?a title="http://code.google.com/p/hs4j/downloads/list" >http://code.google.com/p/hs4j/downloads/list
æºç 仓库åQ?a rel="nofollow">https://github.com/killme2008/hs4j
å¦‚æžœä½ ä‹É用maven2åQŒå¯ä»¥ç›´æŽ¥å¼•ç”¨ï¼š(x¨¬)
<dependency>
<groupId>com.googlecode.hs4j</groupId>
<artifactId>hs4j</artifactId>
<version>0.1</version>
</dependency>
<groupId>com.googlecode.hs4j</groupId>
<artifactId>hs4j</artifactId>
<version>0.1</version>
</dependency>
有疑问和bug误‚”¾pÀLˆ‘ã€?br />
dennis 2011-03-29 06:55 å‘表评论
]]>1ã€Bugä¿®å¤åQŒä»Ž1.3.1版本以æ¥å‘现的bugòq¶ä¿®å¤ï¼ŒåŒ…括åQ?
issue 112:: 新引入的failure模å¼åœ¨å¯åŠ¨çš„时候，如果memcachedæ•…éšœåQŒè¿è¡Œä¸½W¦åˆé¢„期的bug.
issue 113: æ–°å¢žåŠ ä¸€ä¸ªdeleteæ–ÒŽ(gu¨©)³•åQŒå¯ä»¥è®¾¾|®æ“作超æ—?/p>
public boolean delete(final String key, long opTimeout)
throws TimeoutException, InterruptedException, MemcachedException;
throws TimeoutException, InterruptedException, MemcachedException;
2ã€æ€§èƒ½è°ƒä¼˜åQŒå˜å‚¨æ“ä½?set/add/replace/prepend/append/cas)的性能æå‡5%ã€?/p>
3ã€ä¿®å¤pom.xmlåQŒä‹Éå¾—xmemcachedå¯ä»¥åœ¨å…¶ä»–机器上¾~–译ã€?/p>
4ã€ä‹É用github作äØ“(f¨´)æºç 仓库åQŒç‰ˆæœ¬ç®¡ç†ä‹É用git替æ¢svnåQŒæºç è{¿UÕdˆ°
https://github.com/killme2008/xmemcached
新版本下载地å€åQ?/p> http://code.google.com/p/xmemcached/downloads/list
使用mavenå¯ä»¥ç›´æŽ¥å¼•ç”¨åQ?nbsp;
<dependency> <groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.2</version>
</dependency>
<artifactId>xmemcached</artifactId>
<version>1.3.2</version>
</dependency>
™å¹ç›®æ–‡æ¡£åQ?/p>
http://code.google.com/p/xmemcached/w/list
dennis 2011-03-27 14:06 å‘表评论
]]>| Feature | Supported | Comment |
|---|---|---|
| define | yes | |
| lambda | yes | |
| variable lookup | yes | |
| primitive procedure evaluation | yes | |
| compound procedure evaluation | yes | no tail recursion yet |
| if | yes | |
| cond | yes | |
| let | yes |
|
| let* | yes |
no named let* yet |
| letrec | no | |
| begin | yes |
|
| set! | yes |
|
| quote | yes | |
| quasiquote | no | |
| unquote | no | |
| delay | no | |
| define-syntax | no |
支æŒçš„primitive procedure包括常è§çš„四则追Ž—ã€car/cdrã€list以åŠ(qi¨¢ng)displayã€newline½{‰ã€‚代ç 放在了github上：(x¨¬)https://github.com/killme2008/cscheme,有兴‘£çš„å¯ä»¥çŽ©çŽ©å§ã€?br />
dennis 2011-01-24 10:42 å‘表评论
]]>1ã€å¼•å…¥äº†failure模å¼åQŒæ‰€è°“failure模å¼æ˜¯æŒ‡åœ¨å½“一个memcachedç”׃ºŽå„ç§åŽŸå› ä¸å¯ç”¨çš„情况下，å‘å¾€˜q™ä¸ªèŠ‚点的请求将直接抛出异常åQŒè€Œéžä½¿ç”¨ä¸‹ä¸€ä¸ªå¯ç”¨çš„节点。具体å¯ä»¥çœ‹memachedçš?a >˜q™ä¸ªæ–‡æ¡£ã€‚默认ä¸å¯ç”¨åQŒå¯ç”¨failure模å¼å¾ˆç®€å•ï¼š(x¨¬)
MemcachedClientBuilder builder=……
//å¯ç”¨failure模å¼ã€?/span>
builder.setFailureMode(true);
//å¯ç”¨failure模å¼ã€?/span>
builder.setFailureMode(true);
也å¯ä»¥é‡‡ç”¨springé…ç½®ã€?br />
2ã€åœ¨å¯ç”¨failure模å¼çš„情况下åQŒå…è®æ€Ø“(f¨´)æ¯ä¸ªmemcached讄¡½®ä¸€ä¸ªå¤‡ä»½èŠ‚点，当主节点挂掉的情况下åQŒä¼š(x¨¬)ž®†è¯·æ±‚è{交给备䆾节点åQŒä¸»èŠ‚点æ¢å¤åŽåˆè‡ªåŠ¨åˆ‡æ¢åˆîC¸»èŠ‚点。请注æ„åQŒè¦è®„¡½®å¤‡ä†¾èŠ‚点的å‰æ是å¯ç”¨failure模å¼ã€‚å‡è®¾æˆ‘们已¾l有两个memcached节点åQšhost1:portå’Œhost2:portåQŒäØ“(f¨´)host1:port讄¡½®ä¸€ä¸ªå¤‡ä»½èŠ‚点host3:portå¯ä»¥å®žçŽ°ä¸ºï¼š(x¨¬)MemcachedClientBuilder builder=new XmemcachedClientBuilder(AddrUtil.getAddressMap("host1:port,host3:port host2:port"))
……
……
ä¸Õd¤‡èŠ‚点之间用逗å·éš”å¼€åQŒä¸åŒåˆ†¾l„之间用½Iºæ ¼éš”å¼€åQŒå®Œå…¨å…¼å®?.2。åƈ且当备䆾节点˜qžæŽ¥æ„外æ–开的情况下åQŒxmemcached也会(x¨¬)自动修å¤å¤‡ä†¾èŠ‚点的连接åÆˆåŠ å…¥æ˜ å°„ã€?br />
关于failure模å¼å’Œstandby节点更多内容å¯ä»¥å‚è€?a href="http://www.aygfsteel.com/killme2008/archive/2010/12/28/341731.html">˜q™ç¯‡blog.
3ã€ä¿®æ£BUG和新功能åQŒåŒ…æ‹?a >issue 104,issue 105,issue 107½{‰ã€?br />
™å¹ç›®ä¸»é¡µ http://code.google.com/p/xmemcached/
下è²åœ°å€ http://code.google.com/p/xmemcached/downloads/list
ç”¨æˆ·æŒ‡å— http://code.google.com/p/xmemcached/wiki/TableOfContents
å¦‚æžœä½ ä‹É用mavenæž„å¾åQŒå¯ä»¥ç›´æŽ¥å¼•ç”¨ï¼š(x¨¬)
<dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.1</version>
</dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>1.3.1</version>
</dependency>
æ›´æ–°åQšå‘å¸?.3.1äº†ï¼Œå¦‚æžœä½ è¿˜åœ¨ä‹Éç”?.3.0åQŒå¾è®®å‡¾U§ã€?.3.0å› äØ“(f¨´)改å˜äº†memcached地å€æœåŠ¡å™¨é¡ºåºï¼Œå¯èƒ½å¯ÆD‡´åŽŸæœ‰çš„缓å˜å¤±æ•ˆã€?br />
dennis 2011-01-04 20:10 å‘表评论
]]>//讄¡½®ä½¿ç”¨failure模å¼
builder.setFailureMode(true); 在æ¤æ¨¡å¼ä¸‹ï¼ŒæŸä¸ªèŠ‚点挂掉的情况下åQŒå¾€˜q™ä¸ªèŠ‚点的请求都ž®†ç›´æŽ¥æŠ›å‡ºMemcachedException的异常ã€?br />
ä¸ä»…如æ¤åQŒxmemcached 1.3˜q˜å°†å¼•å…¥standby nodeçš„æ¦‚å¿µï¼Œä½ å¯ä»¥è®¾¾|®æŸä¸ªmemached节点的备份节点，当这个节ç‚ÒŽ(gu¨©)Œ‚掉的时候会(x¨¬)ž®†è¯·æ±‚è{å‘ç»™˜q™ä¸ªå¤‡ä†¾èŠ‚点åQŒä¸ä¼?x¨¬)简å•åœ°æŠ›å‡ºå¼‚常åQŒä¹Ÿä¸ä¼š(x¨¬)转呾l™å…¶ä»–节ç‚V€‚è¦ä½¿ç”¨standby nodeåQŒå¿…™å»é¦–先设¾|®ä‹É用failure modeåQŒä¸€ä¸ªä¾‹å：(x¨¬)
XMemcachedClientBuilder builder = new XMemcachedClientBuilder(AddrUtil
.getAddressMap("192.168.1.99:11211,192.168.1.100:11211 192.168.1.101:11211,192.168.1.102:11211"));
builder.setFailureMode(true);
.getAddressMap("192.168.1.99:11211,192.168.1.100:11211 192.168.1.101:11211,192.168.1.102:11211"));
builder.setFailureMode(true);
å¯ä»¥çœ‹åˆ°åQŒæ–°çš„æœåŠ¡å™¨å—ç¬¦ä¸²æ ¼å¼å˜åŒ–äØ“(f¨´)host:port,host:port host:port,host:portçš„æ ¼å¼ï¼Œä»¥ç©ºæ ¼éš”开的是两个节点¾l„æˆçš„一个分¾l„，以逗å·éš”开的是主节点和备䆾节点åQŒä»¥ä¸Šé¢çš„例åæ¥è¯ß_(d¨¢)¼Œæˆ‘们讄¡½®å®¢æˆ·ç«¯ä‹É用的节点æ˜?92.168.1.99å’?92.168.1.101åQŒå…¶ä¸?9对应的备份节ç‚ÒŽ(gu¨©)˜¯100åQŒè€?01的备份节ç‚ÒŽ(gu¨©)˜¯102。åƈ且我们需è¦è®¾¾|®ä‹É用failure mode为trueã€?br />
Failure modeåŠ ä¸Šstandby节点å¯ä»¥æ¯”较好的解决新旧数æ®çš„问题，òq¶ä¸”也å¯ä»¥é˜²æ¢è¯·æ±‚ç©¿é€ç¼“å˜åˆ°DBåQŒä½†æ˜¯ä¸»å¤‡ä¸¤ä¸ªèŠ‚点之间的数æ®åŒæ¥åQŒxmemcachedä¸å‡†å¤‡å¸®ä½ åšåQŒæˆ‘çš„å¾è®®æ˜¯å¯ä»¥ä½¿ç”¨repcached˜q™ä¸ªpatchåšå¤åˆ¶ã€?br /> 有的朋å‹å¯èƒ½å¸Œæœ›åQŒåœ¨ä½¿ç”¨å¤‡ä†¾èŠ‚点之å‰å…ˆflush掉备份节点的数æ®åQŒé˜²æ¢ä‹É用到è€çš„æ•°æ®åQŒè¯·æ±‚还是å¯ä»¥ç©¿é€ç¼“å˜åŽ»DB查找åQŒåƈå˜å‚¨åˆ°å¤‡ä»½èŠ‚点，我仔¾l†è€ƒè™‘了这个方案，衡é‡ä¹‹ä¸‹˜q˜æ˜¯ä¸å‡†å¤‡åšè‡ªåŠ¨flushåQŒä¸»è¦æ˜¯òq¶å‘上很隑֤„ç†ï¼Œòq¶ä¸”flush数殘q™ä¸ªäº‹æƒ…å¯ä»¥æ‰‹å·¥æ¥æžåQŒæ ¹æ®æˆ‘çš„ç»éªŒï¼Œåšçš„太é€æ˜Žå¤ªè‡ªåŠ¨ä¸ä¸€å®šæ˜¯å¥½äº‹ã€‚ä½ å¯ä»¥åœ¨ä¸»èŠ‚点æ¢å¤ä¹‹åŽåQŒæ‰‹å·¥flush下备份节点的数æ®ã€?br />
ç›®å‰åQŒxmemcached 1.3å·²ç»æ•´è£…å¾…å‘åQŒå¯¹˜q™äº›ç‰ÒŽ(gu¨©)€§æœ‰å…´è¶£çš„朋å‹å¯ä»¥å…ˆä»?a >svn下è²æº?/a>ç å°é²œï¼Œæœ‰ä“Q何改˜q›çš„å»ø™®®è¯·å‘é‚®äšg¾l™æˆ‘。我的邮件地å€åœ¨åšå®¢çš„å³ä¸Šè§’ã€?br />
]]>
˜q™ä¸ªä¸œè¥¿ä¸ÞZ»€ä¹ˆè®©æˆ‘很‹È€åŠ¨å‘¢åQŸé¦–先性能是程åºå‘˜çš„G点，一å¬é«˜æ€§èƒ½ä½ ä¸ç”±åœ°‹È€åŠ¨ï¼Œå…¶æ¬¡åQŒè¿™ä¹Ÿè§£å†³äº†¾~“å˜è·Ÿæ•°æ®åº“çš„ä¸€è‡´æ€§é—®é¢˜ï¼Œå› äØ“(f¨´)¾~“嘞®±åœ¨æ•°æ®åº“里é¢ï¼Œ½W¬ä¸‰åQŒè¿™ä¸ªä¸œè¥¿ä¸ä»…仅是NoSQLåQŒç®€å•çš„CRUDä½ å¯ä»¥é€šè¿‡HandlerSocketåQŒä½†æ˜¯å¤æ‚çš„æŸ¥è¯¢ä½ ä»ç„¶å¯ä»¥èµ°MySqlåQŒå®Œå…¨ç¬¦åˆæˆ‘们应用的场景åQŒåƈ且从实际‹¹‹è¯•æ¥çœ‹åQŒæ€§èƒ½¼‹®å®žéžå¸¸ä¼˜ç§€ã€‚但是呢åQŒè¿™ä¸ªä¸œè¥¿çš„代äh(hu¨¢n)也少ä¸äº†åQŒä¾‹å¦‚没有æƒé™æ£€æŸ¥ï¼ˆæœªæ¥å¯èƒ½æ·ÕdŠ åQ‰ï¼›ä¸èƒ½å¯ç”¨MySql的查询缓å˜ï¼Œå¦åˆ™ä¼?x¨¬)导致数æ®çš„ä¸ä¸€è‡ß_(d¨¢)¼›
HandlerSocket有一个日本ähçš„java客户端实玎ͼŒæˆ‘去ž®è¯•äº†ä¸‹åQŒç»“æžœå‘现这玩æ„完全ä¸å…·å®žç”¨æ€§ï¼Œž®è£…的层‹Æ¡éžå¸¸åŽŸå§‹ã€‚å› æ¤æˆ‘自己写了个新的客æˆïL(f¨¥ng)«¯åQŒè¿™ž®±æ˜¯æœ¬æ–‡è¦ä»‹¾lçš„HandlerSocket Client for JavaåQŒç®€¿U?a >hs4jåQŒé¡¹ç›®æ”¾åœ¨äº†googlecodeåQŒä»£ç çš„¾|‘络层å¤ç”¨xmemcachedåQŒé‡æ–°å®žçŽîCº†å议和上层接å£ï¼Œç›®å‰çš„状æ€å®Œå…¨å¯ç”¨ï¼Œä¹Ÿå¸Œæœ›æœ‰éœ€è¦çš„朋å‹å‚与‹¹‹è¯•ã€?br />
™å¹ç›®åœ°å€åQ?a >http://code.google.com/p/hs4j/
HS4Jçš„ä‹É用很½Ž€å•ï¼Œæ‰€æœ‰çš„æ“作都通过HSClient˜q™ä¸ªæŽ¥å£˜q›è¡ŒåQŒå¦‚我们创å¾ä¸€ä¸ªå®¢æˆïL(f¨¥ng)«¯å¯¹è±¡åQ?br />
import com.google.code.hs4j.HSClient;
import com.google.code.hs4j.impl.HSClientImpl;
HSClient hsClient = new HSClientImpl(new InetSocketAddress(9999));
import com.google.code.hs4j.impl.HSClientImpl;
HSClient hsClient = new HSClientImpl(new InetSocketAddress(9999));
å‡è®¾HandlerSocket˜q行在本地的9999端å£åQŒé»˜è®¤çš„9998是åªè¯Èš„åQ?999æ‰æ˜¯å…许è¯Õd’Œå†™ã€‚HSClient是线½E‹å®‰å…¨çš„ã€?br />
在执行æ“作å‰éœ€è¦å…ˆopen indexåQ?br />
import com.google.code.hs4j.IndexSession;
IndexSession session = hsClient.openIndexSession(db, table,
"PRIMARY", columns);
IndexSession session = hsClient.openIndexSession(db, table,
"PRIMARY", columns);
å…¶ä¸db是数æ®åº“å?table是表å，"PRIMARY"表示使用主键索引åQŒcolumns是一个嗽W¦ä¸²æ•°ç»„ä»£è¡¨ä½ è¦æŸ¥è¯¢çš„å—ŒDµå¿U°ã€‚这里没有指定indexidåQŒé»˜è®¤ä¼š(x¨¬)产生一个indexidåQŒä½ 也å¯ä»¥æŒ‡å®šindexidåQŒè¿”回表½CÞZ¸€‹Æ¡open-indexä¼?x¨¬)è¯å¯¹è±¡åQŒIndexSessionåŒæ ·æ˜¯çº¿½E‹å®‰å…¨çš„ã€?br />
IndexSession session = hsClient.openIndexSession(indexid,db, table,
"PRIMARY", columns);
"PRIMARY", columns);
查询æ“作通过findæ–ÒŽ(gu¨©)³•:
import java.sql.ResultSet;
final String[] keys = { "dennis", "killme2008@gmail.com" };
ResultSet rs = session.find(keys);
while(rs.next()){
String name=rs.getString(1);
String mail=rs.getString(2);
}
final String[] keys = { "dennis", "killme2008@gmail.com" };
ResultSet rs = session.find(keys);
while(rs.next()){
String name=rs.getString(1);
String mail=rs.getString(2);
}
find˜q”回的是java.sql.ResultSetåQŒä½ 完全å¯ä»¥åƒä‹É用jdbcé‚£æ ·åŽÀL“作结果集。当然我的简å•å®žçŽ°åƈä¸ç¬¦åˆJDBC规范åQŒåªå®žçŽ°äº†æœ€å¸¸è§çš„一些方法，如getStrngã€getLong½{‰ã€‚find(keys)æ–ÒŽ(gu¨©)³•é»˜è®¤ä½¿ç”¨çš„opæ˜?="。其他é‡è½½æ–¹æ³•å¯ä»¥è®¾¾|®å…¶ä»–类型的opåQŒç»Ÿä¸€ž®è£…为枚丄¡±»åž‹FindOperatorã€?br />
æ›´æ–°æ“作åQ?br />
import com.google.code.hs4j.FindOperator;
int result=session.update(keys, new String[] { "1", "dennis",
"test@163.com", "109" }, FindOperator.EQ);
int result=session.update(keys, new String[] { "1", "dennis",
"test@163.com", "109" }, FindOperator.EQ);
keys表示索引的嗌Dµåˆ—表对应的值数¾l„，通过FindOperator.EQ比较˜q™äº›å€¼å’Œç´¢å¼•åQŒç¬¬äºŒä¸ªå‚æ•°values表示è¦æ›´æ–°çš„å—段å€û|¼Œ˜q™äº›å€ÆD·Ÿä½ 在open-indexçš„æ—¶å€™ä¼ å…¥çš„columns一一对应åQŒæœ€åŽè¿”回作用的记录数ã€?br />
åˆ é™¤æ“作åQ?br />
int result= session.delete(new String[] { "dennis" },
FindOperator.EQ)
FindOperator.EQ)
HS4JåŒæ ·æ”¯æŒ˜qžæŽ¥æ± ，å¯ä»¥åœ¨æž„建客æˆïL(f¨¥ng)«¯çš„æ—¶å€™ä¼ å…¥è¿žæŽ¥æ± å¤§å°åQ?br />
//100-connections pool
HSClient hsClient = new HSClientImpl(new InetSocketAddress(9999),100);
HSClient hsClient = new HSClientImpl(new InetSocketAddress(9999),100);
在open index的时候，ä¼?x¨¬)在˜qžæŽ¥æ± 里所有的˜qžæŽ¥ä¸Šéƒ½open。åƈ且在˜qžæŽ¥å› äØ“(f¨´)æ„外情况åQˆå¦‚¾|‘络错误åQ‰æ–开的时候，HS4Jä¼?x¨¬)自动釘qžï¼Œòq¶åœ¨é‡è¿žæˆåŠŸçš„情况下自动å‘é€å·²¾lopençš„indexåQŒä¿è¯åº”用的æ“作ä¸å—é‡è¿žå½±å“ã€?br />
å› äØ“(f¨´)HS4J是我在两天内写就的一个东西，å¯èƒ½˜q˜æœ‰ä¸å°‘éšè—çš„bugåQŒåƈ且HandlerSocket本èín也是个新东西åQŒå¦‚果有什么问题或者改˜q›å¾è®®ï¼Œéšæ—¶‹Æ¢è¿Žå‘Šè¯‰æˆ‘，多谢ã€?br />
dennis 2010-11-30 13:51 å‘表评论
]]>下è²åœ°å€åQ?a href="http://www.aygfsteel.com/Files/killme2008/NIO%20trick%20and%20trap.pdf.zip">Nio Trick and Trap.pdf.zip
dennis 2010-11-22 18:22 å‘表评论
]]>