测试kestrel的队列

一、依赖环境的安装 
1、sbt 


wget http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-tools.sbt/sbt-launch/0.11.2/sbt-launch.jar  


mv sbt-launch.jar /usr/local/bin/  


echo 'java -Xmx512M -jar `dirname $0`/sbt-launch.jar "$@"' >> /usr/local/bin/sbt  


chmod 777 /usr/local/bin/sbt 

2、daemon 


wget http://libslack.org/daemon/download/daemon-0.6.4.tar.gz  


tar xzvf daemon-0.6.4.tar.gz  


./configure  


make & make install  

二、安装kestrel 


wget http://robey.github.com/kestrel/download/kestrel-2.2.0.zip


unzip kestrel-2.2.0.zip


mv kestrel-2.2.0 /usr/local/kestrel


mkdir /usr/local/kestrel/current


cp /usr/local/kestrel/*.jar /usr/local/kestrel/current

三 启动 kestrel


nohup java -jar /usr/local/kestrel/kestrel_2.9.1-2.2.0.jar &

四 通过telnet命令的基本使用


Kestrel有三种协议：memcached、thrift、text。分别在独立的端口提供服务，默认如下：


memcached  => 22133，thrift => 2229 ,text => 2222


text相对简单，模拟消息生产和消费：telnet到Kestrel server上，使用"put <queue_name>:\nmessage\n\n"进行生产和"get <queue_name>\n"进行消费，"\n"看作回车键即可。

我们只测试memcached协议

[root@xen189v-t ~]# telnet 127.0.0.1 22133


Trying 127.0.0.1...


Connected to xen189v.ops.corp.qihoo.net (127.0.0.1).


Escape character is '^]'.


reload


Reloaded config.


DUMP_STATS


queue 'uptime' {


 items=0


 bytes=0


 total_items=0


 logsize=0


 expired_items=0


 mem_items=0


 mem_bytes=0


 age=0


 discarded=0


 waiters=0


 open_transactions=0


 total_flushes=0


}


END


stats


STAT uptime 507


STAT time 1378360712


STAT version 2.2.0


STAT curr_items 0


STAT total_items 0


STAT bytes 0


STAT reserved_memory_ratio 0.070


STAT curr_connections 1


STAT total_connections 9


STAT cmd_get 1


STAT cmd_set 0


STAT cmd_peek 0


STAT get_hits 0


STAT get_misses 1


STAT bytes_read 255


STAT bytes_written 2015


STAT queue_creates 1


STAT queue_deletes 0


STAT queue_expires 0


STAT queue_uptime_items 0


STAT queue_uptime_bytes 0


STAT queue_uptime_total_items 0


STAT queue_uptime_logsize 0


STAT queue_uptime_expired_items 0


STAT queue_uptime_mem_items 0


STAT queue_uptime_mem_bytes 0


STAT queue_uptime_age 0


STAT queue_uptime_discarded 0


STAT queue_uptime_waiters 0


STAT queue_uptime_open_transactions 0


STAT queue_uptime_total_flushes 0


END

 ######################################################################

 测试队列的先进先出

[root@xen189v-t ~]# telnet 127.0.0.1 22133


Trying 127.0.0.1...


Connected to xen189v.ops.corp.qihoo.net (127.0.0.1).


Escape character is '^]'.


set fuck 0 0 2


d1


STORED


set fuck 0 0 3


kkk


STORED


set fuck 0 0 8


xxxdddkk


STORED


get fuck


VALUE fuck 0 2


d1


END


get fuck


VALUE fuck 0 3


kkk


END


get fuck


VALUE fuck 0 8


xxxdddkk


END


stats


STAT uptime 1307


STAT time 1378361512


STAT version 2.2.0


STAT curr_items 0


STAT total_items 9


STAT bytes 0


STAT reserved_memory_ratio 0.211


STAT curr_connections 1


STAT total_connections 20


STAT cmd_get 12


STAT cmd_set 9


STAT cmd_peek 0


STAT get_hits 9


STAT get_misses 3


STAT bytes_read 677


STAT bytes_written 9093


STAT queue_creates 3


STAT queue_deletes 0


STAT queue_expires 0


STAT queue_fuck_items 0


STAT queue_fuck_bytes 0


STAT queue_fuck_total_items 9


STAT queue_fuck_logsize 252


STAT queue_fuck_expired_items 0


STAT queue_fuck_mem_items 0


STAT queue_fuck_mem_bytes 0


STAT queue_fuck_age 0


STAT queue_fuck_discarded 0


STAT queue_fuck_waiters 0


STAT queue_fuck_open_transactions 0


STAT queue_fuck_total_flushes 0


STAT queue_uptime_items 0


STAT queue_uptime_bytes 0


STAT queue_uptime_total_items 0


STAT queue_uptime_logsize 0


STAT queue_uptime_expired_items 0


STAT queue_uptime_mem_items 0


STAT queue_uptime_mem_bytes 0


STAT queue_uptime_age 0


STAT queue_uptime_discarded 0


STAT queue_uptime_waiters 0


STAT queue_uptime_open_transactions 0


STAT queue_uptime_total_flushes 0


STAT queue_aaa_items 0


STAT queue_aaa_bytes 0


STAT queue_aaa_total_items 0


STAT queue_aaa_logsize 0


STAT queue_aaa_expired_items 0


STAT queue_aaa_mem_items 0


STAT queue_aaa_mem_bytes 0


STAT queue_aaa_age 0


STAT queue_aaa_discarded 0


STAT queue_aaa_waiters 0


STAT queue_aaa_open_transactions 0


STAT queue_aaa_total_flushes 0


END

继续

get fuck
END

因为队列加的3个数据，统统被取出来了。

五 kestrel认知


1）Kestrel是twitter开源的一个scala写的简单高效MQ,采用的协议是memcached的文本协议，但是并不完全支持所有memcached协议，也不是完全兼容现有协议。


2）标准的协议它仅支持GET、SET、FLUSH_ALL、STATS，


3）Kestrel是一个队列服务器

六 kestrel实现memcache协议的命令如下：  


The kestrel implementation of the memcache protocol commands is described below.  


 


SET <queue-name> <flags (ignored)> <expiration> <# bytes>  


Add an item to a queue. It may fail if the queue has a size or item limit and it's full.  


 


GET <queue-name>[options]  


Remove an item from a queue. It will return an empty response immediately if the queue is empty.

DELETE <queue-name>   删除某个队列同时删除所有条目,也会删除有关联的日志文件  


Drop a queue, discarding any items in it, and deleting any associated journal files.  


 


FLUSH <queue-name>   删除某个队列中的所有条目  


Discard all items remaining in this queue. The queue remains live and new items can be added. The time it takes to flush will be linear to the current queue size, and any other activity on this queue will block while it's being flushed.  


 


FLUSH_ALL  删除所有队列中的所有条目，就好像是每个队列都接受到了FLUSH命令一样  


Discard all items remaining in all queues. The queues are flushed one at a time, as if kestrel received a FLUSH command for each queue.  


 


VERSION   查询KESTREL的版本号  


Display the kestrel version in a way compatible with memcache.  


 


SHUTDOWN  关闭KESTREL服务器然后退出  


Cleanly shutdown the server and exit.  


 


RELOAD   重新加载配置文件  


Reload the config file and reconfigure all queues. This should have no noticable effect on the server's responsiveness.  


 


STATS  跟MEMCACHE显示的格式一样显示  


Display server stats in memcache style. They're described below.  


 


DUMP_STATS  按照队列名分组来显示  


Display server stats in a more readable style, grouped by queue. They're described below.