redis和memcache比较像的，memcache可以实现服务器的集群，redis肯定也是可以的。下面在一台机，实现redis主从复制。@H_404_1@

1，copy一下redis.conf，生成一个从机的配置@H_404_1@

cp /usr/local/redis/redis.conf /usr/local/redis/redis_slave.conf@H_404_1@

2，修改主服务器的配置redis.conf@H_404_1@

bind 127.0.0.1@H_404_1@

3，修改从服务器的配置redis_slave.conf@H_404_1@

pidfile /usr/local/redis/var/redis_slave.pid@H_404_1@

port 10002@H_404_1@

bind 127.0.0.1@H_404_1@

logfile /usr/local/redis/var/redis_slave.log@H_404_1@

dbfilename dump_slave.rdb@H_404_1@

slaveof 127.0.0.1 6379@H_404_1@

4，启动主服务器，从服务器@H_404_1@

redis-server /usr/local/redis/redis.conf@H_404_1@

redis-server /usr/local/redis/redis_slave.conf@H_404_1@

查看一下，redis.log文件会有以下内容@H_404_1@

[3774] 27 Jun 12:53:32 * The server is now ready to accept connections on port 10002@H_404_1@

[3774] 27 Jun 12:53:32 - 0 clients connected (0 slaves),539568 bytes in use@H_404_1@

[3774] 27 Jun 12:53:32 * Connecting to MASTER...@H_404_1@

[3772] 27 Jun 12:53:32 - Accepted 127.0.0.1:33237@H_404_1@

[3772] 27 Jun 12:53:32 * Slave ask for synchronization@H_404_1@

[3772] 27 Jun 12:53:32 * Starting BGSAVE for SYNC@H_404_1@

[3772] 27 Jun 12:53:32 * Background saving started by pid 3775@H_404_1@

[3774] 27 Jun 12:53:32 * MASTER <-> SLAVE sync started: SYNC sent@H_404_1@

[3775] 27 Jun 12:53:32 * DB saved on disk@H_404_1@

[3772] 27 Jun 12:53:33 * Background saving terminated with success@H_404_1@

[3772] 27 Jun 12:53:33 * Synchronization with slave succeeded@H_404_1@

[3774] 27 Jun 12:53:33 * MASTER <-> SLAVE sync: receiving 333 bytes from master@H_404_1@

[3774] 27 Jun 12:53:33 * MASTER <-> SLAVE sync: Loading DB in memory@H_404_1@

[3774] 27 Jun 12:53:33 * MASTER <-> SLAVE sync: Finished with success@H_404_1@

查看一下@H_404_1@

root@ubuntu:/usr/local/redis# ps -e|grep redis@H_404_1@

3774 ? 00:00:00 redis-server@H_404_1@

4148 ? 00:00:00 redis-server@H_404_1@

5，测试结果@H_404_1@ @H_301_82@PHP $redis = new redis(); $redis->connect('127.0.0.1',6379); $redis->set('test',json_encode(array(1,2,3,4))); print_r(json_decode($redis->get('test'))); ?>

root@ubuntu:/usr/local/redis# telnet 127.0.0.1 10002@H_404_1@

Trying 127.0.0.1...@H_404_1@

Connected to 127.0.0.1.@H_404_1@

Escape character is '^]'.@H_404_1@

get test@H_404_1@

$9@H_404_1@

[1,4]@H_404_1@

缓存数据是放在6379这个端口的服务器上，代码执行后，登录到10002端口的slave服务器上也可以看到有数据，说明已经同步了。@H_404_1@

我尝试了一下，redis的主主同步，但是没有成功，我看了一下log，以从服务器127.0.0.1 10002为master的时候，同时启动二个端口，怎么也连接不上127.0.0.1 6379是不支持呢？还是配置有问题，我在网上查了一下，没看到有人配置主主同步的。@H_404_1@