持久化消息队列memcacheq的安装配置 一.memcacheq介绍 特性: 1.简单易用 2.处理速度快 3.多条队列 4.并发性能好 5.与memcache的协议兼容 6.在zend framework中使用方便 memcacheq依赖于Berkeley DB和libevent。Berkeley DB用于持久化存储队列的数据，避免在memcacheq崩溃或这服务器当掉时候，不至于数据丢失。 二.安装Berkeley DB download url: http://www.oracle.com/technetwork/database/berkeleydb/downloads/index.html # tar zxvf db-5.2.28.tar.gz -C ../software/ # cd ../software/db-5.2.28/ # cd build_unix/ # ../dist/configure --prefix=/usr/local/db-5.2.28 # make # make install 三.安装libevent # wget http://monkey.org/~provos/libevent-2.0.12-stable.tar.gz # tar zxvf libevent-2.0.12-stable.tar.gz -C ../software/ # cd ../software/libevent-2.0.12-stable/ # ./configure --prefix=/usr/local/libevent-2.0.12 # make # make install 四.安装memcacheq # wget http://memcacheq.googlecode.com/files/memcacheq-0.2.0.tar.gz # tar zxvf memcacheq-0.2.0.tar.gz -C ../software/ # cd ../software/memcacheq-0.2.0/ # ./configure --prefix=/usr/local/memcacheq-0.2.0 --with-libevent=/usr/local/libevent-2.0.12 --with-bdb=/usr/local/db-5.2.28 --enable-threads # make # make install 五.启动memcacheq # chown nobody:root /memdata # ./memcacheq -d -r -u nobody -vv -t 4 -m 64 -H /memdata -N -R > /var/log/memq.log 2>&1 -p <num> TCP监听端口(default: 22201) -U <num> UDP监听端口(default: 0, off) -s <file> unix socket路径(不支持网络) -a <mask> unix socket访问掩码(default 0700) -l <ip_addr> 监听网卡 -d 守护进程 -r 最大化核心文件限制 -u <username> 以用户身份运行(only when run as root) -c <num> 最大并发连接数(default is 1024) -v 详细输出 (print errors/warnings while in event loop) -vv 更详细的输出 (also print client commands/reponses) -i 打印许可证信息 -P <file> PID文件 -t <num> 线程数(default 4) --------------------BerkeleyDB Options------------------------------- -m <num> BerkeleyDB内存缓存大小, default is 64MB -A <num> 底层页面大小, default is 4096, (512B ~ 64KB, power-of-two) -H <dir> 数据库家目录, default is '/data1/memcacheq' -L <num> 日志缓冲区大小, default is 32KB -C <num> 多少秒checkpoint一次, 0 for disable, default is 5 minutes -T <num> 多少秒memp_trickle一次, 0 for disable, default is 30 seconds -S <num> 多少秒queue stats dump一次, 0 for disable, default is 30 seconds -e <num> 达到缓存百分之多少需要刷新, default is 60% -E <num> 一个单一的DB文件有多少页, default is 16*1024, 0 for disable -B <num> 指定消息体的长度,单位字节, default is 1024 -D <num> 多少毫秒做一次死锁检测(deadlock detecting), 0 for disable, default is 100ms -N 开启DB_TXN_NOSYNC获得巨大的性能改善, default is off -R 自动删除不再需要的日志文件, default is off 六.常见错误: ./memcacheq: error while loading shared libraries: libdb-5.2.so: cannot open shared object file: No such file or directory ./memcacheq: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory 解决办法: # cd /etc/ld.so.conf.d/ # vim berkeley-db.conf /usr/local/db-5.2.28/lib # vim libevent.conf /usr/local/libevent-2.0.12/lib # ldconfig 七.测试 set <queue name> <flags> 0 <message_len>rn <put your message body here>rn STOREDrn get <queue name>rn VALUE <queue name> <flags> <message_len>rn <your message body will come here>rn ENDrn # telnet 127.0.0.1 22201 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. set queue1 0 0 2 xu STORED set queue1 0 0 4 hong STORED set queue1 0 0 2 hu STORED stats queue STAT queue1 3/0 //队列queue1中共有3条消息已取出0条 END get queue1 VALUE queue1 0 2 xu END stats queue STAT queue1 3/1 //队列queue1中共有3条消息已取出1条 END delete queue1 //删除队列queue1 DELETED stats queue END