redis的集群部署，用gearman 实现redis+mysql+nginx的数据同步

1.redis的集群部署

关于redis:

redis 是一个高性能的 key-value 数据库。 redis 的出现,很大程度补偿了
memcached 这类 keyvalue 存储的不足,在部分场合可以对关系数据库起到很
好的补充作用。它提供了 Python,Ruby,Erlang,PHP 客户端,使用很方便。
Redis 的所有数据都是保存在内存中,然后不定期的通过异步方式保存到磁盘上
(这称为“半持久化模式”);也可以把每一次数据变化都写入到一个 append
only file(aof)里面(这称为“全持久化模式”)。


主机环境 rhel6.5 selinx and iptales disabled

#

[root@server1 ~]# cd redis-4.0.8
[root@server1 redis-4.0.8]# ls
00-RELEASENOTES  COPYING  Makefile   redis.conf       runtest-sentinel  tests
BUGS             deps     MANIFESTO  runtest          sentinel.conf     utils
CONTRIBUTING     INSTALL  README.md  runtest-cluster  src
[root@server1 redis-4.0.8]# cd /usr/local/
[root@server1 local]# ls
bin  etc  games  include  lib  lib64  libexec  sbin  share  src
[root@server1 local]# mkdir cluster
[root@server1 local]# cd cluster/
[root@server1 cluster]# mkdir 7001
[root@server1 cluster]# mkdir 7002
[root@server1 cluster]# mkdir 7003
[root@server1 cluster]# mkdir 7004
[root@server1 cluster]# mkdir 7005
[root@server1 cluster]# mkdir 7006
[root@server1 cluster]# cd 7001
[root@server1 7001]# vim redis.conf

    port 7001
    cluster-enbled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
[root@server1 7001]# cd
[root@server1 ~]# cd redis-4.0.8
[root@server1 redis-4.0.8]# cd src/
[root@server1 src]# cp redis-trib.rb /usr/local/bin
[root@server1 bin]# ls
redis-benchmark  redis-check-rdb  redis-sentinel  redis-trib.rb
redis-check-aof  redis-cli        redis-server

这些可执行文件的作用如下:
redis-server:   Redis 服务主程序。
redis-cli:    Redis 客户端命令行工具,也可以用telnet 来操作。redis-benchmark:   Redis 性能测试工具,用于测试读写性能。
redis-check-aof:  检查 redis aof 文件完整性,aof 文件持久化记录服务器执行的所有写操作命令,用于还原数据。
redis-check-dump:  检查 redis rdb 文件的完性,rdb 就是快照存储, 即按照一定的策略周期性的将数据保存到磁盘,是默的持久化方式。
redis-sentinel:  redis-sentinel 是集群管理工具,主要负责主从切换。



[root@server1 bin]# cd
[root@server1 ~]# redis-trib.rb 
[root@server1 ~]# yum install rubygems-1.3.7-5.el6.noarch.rpm redis-4.0.1.gem ruby-2.2.3-1.el6.x86_64.rpm libyaml-0.1.3-4.el6_6.x86_64.rpm -y
[root@server1 ~]# gem install --local redis-4.0.1.gem 
Successfully installed redis-4.0.1
Parsing documentation for redis-4.0.1
Installing ri documentation for redis-4.0.1
Done installing documentation for redis after 1 seconds
1 gem installed
[root@server1 ~]# gem list --local 

*** LOCAL GEMS ***

bigdecimal (1.2.6)
io-console (0.4.3)
json (1.8.1)
minitest (5.4.3)
power_assert (0.2.2)
psych (2.0.8)
rake (10.4.2)
rdoc (4.2.0)
redis (4.0.1)
test-unit (3.0.8)

[root@server1 ~]# /etc/init.d/redis_6379 stop
Stopping ...
Redis stopped
[root@server1 ~]# cd /usr/local/cluster/7001
[root@server1 7001]# vim redis.conf
    port 7001
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7001/redis.pid
    logfile /usr/local/cluster/7001/redis.log
[root@server1 7001]# redis-server redis.conf
[root@server1 7001]# ls
appendonly.aof  nodes.conf  redis.conf  redis.log  redis.pid
[root@server1 7001]# cat redis.log

[root@server1 7001]# echo 511 > /proc/sys/net/core/somaxconn
[root@server1 7001]# sysctl -w vm.overcommit_memory=1
vm.overcommit_memory = 1
[root@server1 7001]# vim /etc/sysctl.conf
     42 vm.overcommit_memory = 1
[root@server1 7001]# echo never > /sys/kernel/mm/transparent_hugepage/enabled
[root@server1 7001]# cp redis.conf ../7002
[root@server1 7001]# cp redis.conf ../7003
[root@server1 7001]# cp redis.conf ../7004
[root@server1 7001]# cp redis.conf ../7005
[root@server1 7001]# cp redis.conf ../7006
[root@server1 7001]# cd ..
[root@server1 cluster]# cd 7002
[root@server1 7002]# vim redis.conf 
    port 7002
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7002/redis.pid
    logfile /usr/local/cluster/7002/redis.log
[root@server1 7002]# vim  /usr/local/cluster/7003/redis.conf 
    port 7003
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7003/redis.pid
    logfile /usr/local/cluster/7003/redis.log
[root@server1 7002]# vim  /usr/local/cluster/7003/redis.conf 
    port 7004
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7004/redis.pid
    logfile /usr/local/cluster/7004/redis.log
[root@server1 7002]# vim  /usr/local/cluster/7005/redis.conf 
    port 7005
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7005/redis.pid
    logfile /usr/local/cluster/7005/redis.log
[root@server1 7002]# vim  /usr/local/cluster/7006/redis.conf 
    port 7006
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    appendonly yes
    daemonize yes
    pidfile /usr/local/cluster/7006/redis.pid
    logfile /usr/local/cluster/7006/redis.log
[root@server1 7002]# redis-server redis.conf
[root@server1 7002]# cd /usr/local/cluster/7003
[root@server1 7003]# redis-server redis.conf
[root@server1 7003]# cd /usr/local/cluster/7004
[root@server1 7004]# redis-server redis.conf
[root@server1 7004]# cd /usr/local/cluster/7005
[root@server1 7005]# redis-server redis.conf
[root@server1 7005]# cd /usr/local/cluster/7006
[root@server1 7006]# redis-server redis.conf
 [root@server1 7006]# redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

[root@server1 cluster]# redis-trib.rb check 127.0.0.1:7001

[root@server1 7006]# redis-cli -c -p 7001
    127.0.0.1:7001> info
        # Replication
        role:master
        connected_slaves:1
        slave0:ip=127.0.0.1,port=7005,state=online,offset=350,lag=1  #7005是7001的slave
        master_replid:fc3984d9756f2fcba704b88308824c0a441fc6b8
        master_replid2:0000000000000000000000000000000000000000
        master_repl_offset:350
        second_repl_offset:-1
        repl_backlog_active:1
        repl_backlog_size:1048576
        repl_backlog_first_byte_offset:1
        repl_backlog_histlen:350
    127.0.0.1:7001> set name wzt
    -> Redirected to slot [5798] located at 127.0.0.1:7002   
    OK
    127.0.0.1:7002> get name
    "wzt"

[root@server1 7002]# ps ax

[root@server1 ~]# kill -9 3192  #把7002kill，则7005看不到7001上的东西，而且7005会接管7001的工作，成为了master
[root@server1 ~]# redis-cli -c -p 7005  #7005是7001的slave
    127.0.0.1:7005> get name
    (error) CLUSTERDOWN The cluster is down
    127.0.0.1:7005> 

2.redis + mysql + nginx

#在nginx和php端

##配置nginx和php(这里的nginx只是提供了负载均衡，所以版本要求不高)

[root@server1 ~]# ls
    nginx-1.8.0-1.el6.ngx.x86_64.rpm    php-fpm-5.3.3-38.el6.x86_64.rpm
    php-5.3.3-38.el6.x86_64.rpm         php-gd-5.3.3-38.el6.x86_64.rpm
    php-cli-5.3.3-38.el6.x86_64.rpm     php-mbstring-5.3.3-38.el6.x86_64.rpm
    php-common-5.3.3-38.el6.x86_64.rpm  php-mysql-5.3.3-38.el6.x86_64.rpm
    php-devel-5.3.3-38.el6.x86_64.rpm   php-pdo-5.3.3-38.el6.x86_64.rpm
[root@server1 ~]# yum install  * -y
[root@server1 ~]# vim /etc/php.ini
    946 date.timezone =Asia/Shanghai
[root@server1 ~]# cd /etc/php-fpm.d/
[root@server1 php-fpm.d]# ls
    www.conf
[root@server1 php-fpm.d]# vim www.conf 

     39 user = nginx
     40 ; RPM: Keep a group allowed to write in log dir.
     41 group = nginx
[root@server1 php-fpm.d]# /etc/init.d/php-fpm start
    Starting php-fpm:                                          [  OK  ]
[root@server1 php-fpm.d]# netstat -antlp  #查看php的端口
    tcp        0      0 127.0.0.1:9000              0.0.0.0:*                   LISTEN      3370/php-fpm  
[root@server1 php-fpm.d]#vim /etc/nginx/conf.d/default.conf 
     10         index  index.php index.html index.htm;
     30     location ~ \.php$ {
     31         root           html;
     32         fastcgi_pass   127.0.0.1:9000;
     33         fastcgi_index  index.php;
     34         fastcgi_param  SCRIPT_FILENAME  /usr/share/nginx/html$fastcgi_script_name;
     35         include        fastcgi_params;
     36     }

[root@server1 php-fpm.d]# /etc/init.d/nginx start
    Starting nginx:                                            [  OK  ]

[root@server1 php-fpm.d]# cd /usr/share/nginx/html/
[root@server1 html]# ls
50x.html  index.html
[root@server1 html]# vim index.php
    <?php
    phpinfo()
    ?>

php配置成功

[root@server1 html]# vim index.php 
        3         $redis->connect('172.25.44.3',6379) or die ("could net connect redis     server");
        10    $connect = mysql_connect('172.25.44.4','redis','westos');
[root@server1 ~]# yum install unzip -y
[root@server1 ~]# unzip phpredis-master.zip    
[root@server1 ~]# cd phpredis-master
[root@server1 phpredis-master]# ls
        common.h   debian.control  mkdeb-apache2.sh  redis_session.c
        config.m4  igbinary        php_redis.h       redis_session.h
        CREDITS    library.c       README.markdown   serialize.list
        debian     library.h       redis.c           tests
[root@server1 phpredis-master]# phpize
        Configuring for:
        PHP Api Version:         20090626
        Zend Module Api No:      20090626
        Zend Extension Api No:   220090626
[root@server1 phpredis-master]# ls
        acinclude.m4    config.sub      library.c         README.markdown
        aclocal.m4      configure       library.h         redis.c
        autom4te.cache  configure.in    ltmain.sh         redis_session.c
        build           CREDITS         Makefile.global   redis_session.h
        common.h        debian          missing           run-tests.php
        config.guess    debian.control  mkdeb-apache2.sh  serialize.list
        config.h.in     igbinary        mkinstalldirs     tests
        config.m4       install-sh      php_redis.h
#源码编译       
[root@server1 phpredis-master]# ./configure
[root@server1 phpredis-master]# make && make install
[root@server1 phpredis-master]# cd /usr/lib64/php/modules/
[root@server1 modules]# ls
        curl.so      json.so      mysql.so      pdo_sqlite.so  sqlite3.so
        fileinfo.so  mbstring.so  pdo_mysql.so  phar.so        zip.so
        gd.so        mysqli.so    pdo.so        redis.so
[root@server1 modules]# cd /etc/php.d/
[root@server1 php.d]# cp mysql.ini redis.ini
[root@server1 php.d]# vim redis.ini 
     1 extension=redis.so
[root@server1 php.d]# /etc/init.d/php-fpm reload
        Reloading php-fpm: [12-Aug-2018 12:45:48] NOTICE: configuration file /etc/php-fpm.conf test is successful

                                                                   [  OK  ]

#mysql端操作

[root@server4 ~]# yum install mysql-server -y
[root@server4 ~]# /etc/init.d/mysqld start
[root@server4 ~]# mysql
        mysql> show databases;
        +--------------------+
        | Database           |
        +--------------------+
        | information_schema |
        | mysql              |
        | test               |
        +--------------------+
        3 rows in set (0.00 sec)

        mysql> grant all on test.* to redis@'%' identified by 'westos';
        Query OK, 0 rows affected (0.00 sec)
        mysql> use test;
        Reading table information for completion of table and column names
        You can turn off this feature to get a quicker startup with -A

        Database changed
        mysql> select * from test;
        +----+-------+
        | id | name  |
        +----+-------+
        |  1 | test1 |
        |  2 | test2 |
        |  3 | test3 |
        |  4 | test4 |
        |  5 | test5 |
        |  6 | test6 |
        |  7 | test7 |
        |  8 | test8 |
        |  9 | test9 |
        +----+-------+
        9 rows in set (0.00 sec)
[root@server4 ~]# mysql < test.sql
[root@server4 ~]# vim test.sql

#redis端操作

[root@server2 ~]# /etc/init.d/redis_6379 start
[root@server2 ~]# vim /etc/redis/6379.conf 
        283 
[root@server2 ~]# redis-cli  #确保server2是master
127.0.0.1:6379> info

#测试：

server2也可以查看到

#但是有一个问题，mysql更新后，redis无法同步

mysql>  update test set name='westos' where id =1;
Query OK, 1 row affected (0.08 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> select * from test;
+----+--------+
| id | name   |
+----+--------+
|  1 | westos |
|  2 | test2  |
|  3 | test3  |
|  4 | test4  |
|  5 | test5  |
|  6 | test6  |
|  7 | test7  |
|  8 | test8  |
|  9 | test9  |
+----+--------+

解决问题,配置 gearman 实现数据同步

Gearman 是一个支持分布式的任务分发框架:
Gearman Job Server: Gearman 核心程序,需要编译安装并以守护进程形式运行在后台。
Gearman Client:可以理解为任务的请求者。
Gearman Worker:任务的真正执行者,一般需要自己编写具体逻辑并通过守护进程方式
运行,Gearman Worker 接收到 Gearman Client 传递的任务内容后,会按顺序处理。
大致流程:下面要编写的 mysql 触发器,就相当于 Gearman 的客户端。修改表,插入表就相当于直接
下发任务。然后通过 lib_mysqludf_json UDF 库函数将关系数据映射为 JSON 格式,然后
在通过 gearman-mysql-udf 插件将任务加入到 Gearman 的任务队列中,最后通过
redis_worker.php,也就是 Gearman 的 worker 端来完成 redis 数据库的更新。

#

[root@server1 ~]# ls
        gearmand-1.1.8-2.el6.x86_64.rpm
        libevent-1.4.13-4.el6.x86_64.rpm
        libevent-devel-1.4.13-4.el6.x86_64.rpm
        libevent-doc-1.4.13-4.el6.noarch.rpm
        libevent-headers-1.4.13-4.el6.noarch.rpm
        libgearman-1.1.8-2.el6.x86_64.rpm
        libgearman-devel-1.1.8-2.el6.x86_64.rpm
        lib_mysqludf_json-master.zip
        libyaml-0.1.3-4.el6_6.x86_64.rpm
[root@server1 ~]# yum install gearmand-1.1.8-2.el6.x86_64.rpm lib* -y    #安装 gearman 软件包
[root@server1 ~]# /etc/init.d/gearmand start   #启动服务
            Starting gearmand:                                         [  OK  ]
[root@server1 ~]# netstat -antlp
        tcp        0      0 0.0.0.0:4730                0.0.0.0:*                   LISTEN      5826/gearmand       

#安装 php 的 gearman 扩展，安装 lib_mysqludf_json，lib_mysqludf_json UDF 库函数将关系数据映射为 JSON 格式。通常,数据库中的数据映射为 JSON 格式,是通过程序来转换的。
[root@server4 ~]# ls
    gearman-mysql-udf-0.6.tar.gz   test.sql  lib_mysqludf_json-master.zip
[root@server4 ~]# yum install unzip -y
[root@server4 ~]# unzip lib_mysqludf_json-master.zip
[root@server4 lib_mysqludf_json-master]# yum install gcc mysql-devel -y
[root@server4 lib_mysqludf_json-master]# gcc $(mysql_config --cflags) -shared -fPIC -o lib_mysqludf_json.so lib_mysqludf_json.c
[root@server4 lib_mysqludf_json-master]# ll
    total 100
    -rw-r--r-- 1 root root 25921 2月  22 2013 lib_mysqludf_json.c
    -rw-r--r-- 1 root root 20576 2月  22 2013 lib_mysqludf_json.html
    -rwxr-xr-x 1 root root 22223 8月  12 14:35 lib_mysqludf_json.so
    -rw-r--r-- 1 root root  1431 2月  22 2013 lib_mysqludf_json.sql
    -rw-r--r-- 1 root root 16416 2月  22 2013 README.md

[root@server4 lib_mysqludf_json-master]# cp lib_mysqludf_json.so /usr/lib64/mysql/plugin/
[root@server4 lib_mysqludf_json-master]# cd /usr/lib64/mysql/plugin/
[root@server4 plugin]# ll  lib_mysqludf_json.so
        -rwxr-xr-x 1 root root   22223 8月  12 14:44 lib_mysqludf_json.so

        #查看 mysql 的模块目录:
        mysql> show global variables like 'plugin_dir';
        +---------------+-------------------------+
        | Variable_name | Value                   |
        +---------------+-------------------------+
        | plugin_dir    | /usr/lib64/mysql/plugin |
        +---------------+-------------------------+
        1 row in set (0.00 sec)

        #注册 UDF 函数
        mysql> CREATE FUNCTION json_object RETURNS STRING SONAME
            -> 'lib_mysqludf_json.so';
        Query OK, 0 rows affected (0.00 sec)

        mysql> Bye

#安装 gearman-mysql-udf，这个插件是用来管理调用 Gearman 的分布式的队列。  
[root@server4 plugin]# cd
[root@server4 ~]# tar zxf gearman-mysql-udf-0.6.tar.gz 
[root@server4 ~]# cd gearman-mysql-udf-0.6
[root@server4 gearman-mysql-udf-0.6]# ./configure     #有报错，依赖性没解决完
    configure: error: At least version 0.33 of libgearman is required for gearman-mysql-udf
[root@server4 gearman-mysql-udf-0.6]# cd
[root@server4 ~]# ls
    gearman-mysql-udf-0.6
    gearman-mysql-udf-0.6.tar.gz
    libevent-1.4.13-4.el6.x86_64.rpm
    libevent-devel-1.4.13-4.el6.x86_64.rpm
    libevent-doc-1.4.13-4.el6.noarch.rpm
    libevent-headers-1.4.13-4.el6.noarch.rpm
    libgearman-1.1.8-2.el6.x86_64.rpm
    libgearman-devel-1.1.8-2.el6.x86_64.rpm
    lib_mysqludf_json-master
    lib_mysqludf_json-master.zip
    redis-4.0.8
    redis-4.0.8.tar.gz
    test.sql
[root@server4 ~]# yum install lib* -y  #解决依赖性
[root@server4 ~]# cd gearman-mysql-udf-0.6
[root@server4 gearman-mysql-udf-0.6]# ./configure --libdir=/usr/lib64/mysql/plugin/
[root@server4 gearman-mysql-udf-0.6]# make && make install
[root@server4 gearman-mysql-udf-0.6]# cd /usr/lib64/mysql/plugin/
[root@server4 plugin]# ll
        lrwxrwxrwx 1 root root      29 8月  12 15:05 libgearman_mysql_udf.so -> libgearman_mysql_udf.so.0.0.0
        lrwxrwxrwx 1 root root      29 8月  12 15:05 libgearman_mysql_udf.so.0 -> libgearman_mysql_udf.so.0.0.0
        -rwxr-xr-x 1 root root  114597 8月  12 15:05 libgearman_mysql_udf.so.0.0.0
        -rwxr-xr-x 1 root root   22223 8月  12 14:44 lib_mysqludf_json.so
[root@server4 plugin]# mysql 

    #注册 UDF 函数
    mysql> CREATE FUNCTION gman_do_background RETURNS STRING SONAME
        -> 'libgearman_mysql_udf.so';
    Query OK, 0 rows affected (0.01 sec)

    mysql> CREATE FUNCTION gman_servers_set RETURNS STRING SONAME
        -> 'libgearman_mysql_udf.so';
    Query OK, 0 rows affected (0.00 sec)

    #查看函数
    mysql> select * from mysql.func;
    +--------------------+-----+-------------------------+----------+
    | name               | ret | dl                      | type     |
    +--------------------+-----+-------------------------+----------+
    | json_object        |   0 | lib_mysqludf_json.so    | function |
    | gman_do_background |   0 | libgearman_mysql_udf.so | function |
    | gman_servers_set   |   0 | libgearman_mysql_udf.so | function |
    +--------------------+-----+-------------------------+----------+
    3 rows in set (0.00 sec)

    #指定 gearman 的服务信息
    mysql> SELECT gman_servers_set('172.25.44.1:4730');
    +--------------------------------------+
    | gman_servers_set('172.25.44.1:4730') |
    +--------------------------------------+
    | 172.25.44.1:4730                     |
    +--------------------------------------+
    1 row in set (0.00 sec)
    mysql> Bye

#编写 mysql 触发器(根据实际情况编写)
[root@server4 plugin]# cd
[root@server4 ~]# vim test.sql 

[root@server4 ~]# mysql < test.sql 


#编写 gearman 的 worker 端
[root@server1 ~]# cd /usr/local/
[root@server1 local]# vim worker.php 
     7 $redis->connect('172.25.44.1', 6379);
[root@server1 local]# cd
[root@server1 ~]# tar zxf gearman-1.1.2.tgz
[root@server1 ~]# cd gearman-1.1.2
[root@server1 gearman-1.1.2]# ls
        ChangeLog  examples       php_gearman.h    tests
        config.m4  LICENSE        README           test_worker.php
        CREDITS    php_gearman.c  test_client.php
[root@server1 gearman-1.1.2]# phpize
        Configuring for:
        PHP Api Version:         20090626
        Zend Module Api No:      20090626
        Zend Extension Api No:   220090626
[root@server1 gearman-1.1.2]# ./configure
[root@server1 gearman-1.1.2]# make && make install
[root@server1 gearman-1.1.2]# cd
[root@server1 ~]# cd /usr/lib64/php/modules/
[root@server1 modules]# ls
        curl.so      gearman.so   mysqli.so     pdo.so         redis.so
        fileinfo.so  json.so      mysql.so      pdo_sqlite.so  sqlite3.so
        gd.so        mbstring.so  pdo_mysql.so  phar.so        zip.so
[root@server1 modules]# ll gearman.so 
        -rwxr-xr-x 1 root root 280170 8月  12 15:23 gearman.so
[root@server1 modules]# cd /etc/php.d/
[root@server1 php.d]# ls
        curl.ini      json.ini      mysql.ini      pdo_sqlite.ini  sqlite3.ini
        fileinfo.ini  mbstring.ini  pdo.ini        phar.ini        zip.ini
        gd.ini        mysqli.ini    pdo_mysql.ini  redis.ini
[root@server1 php.d]# cp redis.ini gearman.ini
[root@server1 php.d]# vim gearman.ini 
     1 extension=gearman.so
[root@server1 php.d]# /etc/init.d/php-fpm reload
    Reloading php-fpm: [12-Aug-2018 15:28:09] NOTICE: configuration file /etc/php-fpm.conf test is successful

                                                               [  OK  ]
[root@server1 php.d]# cd /usr/local/
[root@server1 local]# ls
    bin      etc    include  lib64    sbin   src
    cluster  games  lib      libexec  share  worker.php
[root@server1 local]# vim worker.php 

$redis->set($work->id, $work->name);     #这条语句就是将 id 作 KEY 和name 作 VALUE 分开存储,需要和前面写的 php 测试代码的存取一致。

#

#后台运行 worker
[root@server1 local]# nohup php /usr/local/worker.php  &

#测试：

更新 mysql 中的数据

查看 redis

刷新测试页面数据同步