redis配置mysql缓存_Redis做mysql的缓存服务器
一redis簡介：redis 是一個高性能的 key-value 數據庫。 redis 的出現,很大程度補償了memcached 這類 keyvalue 存儲的不足,在部分場合可以對關系數據庫起到很好的補充作用。它提供了 Python,Ruby,Erlang,PHP 客戶端,使用很方便。Redis 的所有數據都是保存在內存中,然后不定期的通過異步方式保存到磁盤上(這稱為“半持久化模式”);也可以把每一次數據變化都寫入到一個appendonly file(aof)里面(這稱為“全持久化模式”)。
二主機環境 rhel6.5 selinx and iptales disabled
1. Redis 安裝
實驗環境 ? 172.25.254.2 ? ?vm2.example.com ? 上
首先得到 ? ?zxf redis-3.0.2.tar.gz
tar zxf redis-3.0.2.tar.gz
cd redis-3.0.2
make && make install
1.1. 配置并啟動服務
cd utils/
./install_server.sh ? ? ? ? ? ? ?這里一路回車都使用的默認
點擊(此處)折疊或打開
[root@vm2 utils]# ./install_server.sh
Welcome to the redis service installer
This script will help you easily set up a running redis server
Please select the redis port for this instance: [6379]
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf]
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log]
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379]
Selected default - /var/lib/redis/6379
Please select the redis executable path [/usr/local/bin/redis-server]
Selected config:
Port : 6379
Config file : /etc/redis/6379.conf
Log file : /var/log/redis_6379.log
Data dir : /var/lib/redis/6379
Executable : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!
1.2簡單測試，如下就證明成功
點擊(此處)折疊或打開
[root@vm2 utils]# redis-cli
127.0.0.1:6379> ping
PONG
2 安裝lnmp架構2.1 安裝以下軟件包
點擊(此處)折疊或打開
[root@vm2 lnmp]# 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@vm2 lnmp]# yum install -y *
2.2安裝 php 的 redis 擴展
首先得到 ? ?phpredis-master.zip
unzip ?phpredis-master.zip
cd ?phpredis-master
phpize
./configure
make ?&& ?make ?install
cd /etc/php.d/
cp mysql.ini ?redis.ini
vim /etc/php.ini ? ? ? ? ? ??????????#添加以下行
extension=redis.so????????? ? ? ?#加載 redis 模塊
點擊(此處)折疊或打開
[root@vm2 php.d]# /etc/init.d/php-fpm start
Starting php-fpm: [ OK ]
2.3簡單配置 nginx
vim /etc/nginx/conf.d/default.conf
location / {
root ? /usr/share/nginx/html;
index ? index.php ?index.html index.htm;
}
location ~ \.php$ {
root ? ? ? ? ? /usr/share/nginx/html;
fastcgi_pass ? 127.0.0.1:9000;
fastcgi_index ?index.php;
fastcgi_param ?SCRIPT_FILENAME ?/usr/share/nginx/html$fastcgi_script_name;
include ? ? ? ?fastcgi_params;
}
啟動 nginx
點擊(此處)折疊或打開
[root@vm2 php.d]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@vm2 php.d]# nginx
[root@vm2 php.d]# netstat -antlpe| grep nginx
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 0 14520 6352/nginx
vim ? /etc/php-fpm.d/www.conf ? ? 將這個配置文件中user和group改為nginx ?默認是apache
user = nginx
group = nginx
/etc/init.d/php-fpm restart
點擊(此處)折疊或打開
[root@vm2 php.d]# /etc/init.d/php-fpm restart
Stopping php-fpm: [ OK ]
Starting php-fpm: [ OK ]
3 在另一臺虛擬機上安裝mysql
實驗環境 ? 172.25.254.3 ? ?vm3.example.com ? 上
yum ?install ?-y ?mysql-server
點擊(此處)折疊或打開
[root@vm3 mnt]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distribution
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> grant all on test.* to redis@'172.25.254.2' identified by 'redhat';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
編寫如下代碼
點擊(此處)折疊或打開
[root@vm3 mnt]# cat test.sql
use test;
CREATE TABLE `test` (`id` int(7) NOT NULL AUTO_INCREMENT, `name` char(8) DEFAULT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `test` VALUES (1,'test1'),(2,'test2'),(3,'test3'),(4,'test4'),(5,'test5'),(6,'test6'),(7,'test7'),(8,'test8'),(9,'test9');
[root@vm3 mnt]# mysql < test.sql
4創建 php 測試頁面在172.25.254.2上面進入nginx默認發布目錄
cd ? ??/usr/share/nginx/html
vim ?test.php
點擊(此處)折疊或打開
$redis = new Redis();
$redis->connect('127.0.0.1',6379) or die ("could net connect redis server");
# $query = "select * from test limit 9";
$query = "select * from test";
for ($key = 1; $key < 10; $key++)
{
if (!$redis->get($key))
{
$connect = mysql_connect('172.25.254.3','redis','redhat');
mysql_select_db(test);
$result = mysql_query($query);
//如果沒有找到$key,就將該查詢sql的結果緩存到redis
while ($row = mysql_fetch_assoc($result))
{
$redis->set($row['id'],$row['name']);
}
$myserver = 'mysql';
break;
}
else
{
$myserver = "redis";
$data[$key] = $redis->get($key);
}
}
echo $myserver;
echo "
";
for ($key = 1; $key < 10; $key++)
{
echo "number is $key";
echo "
";
echo "name is $data[$key]";
echo "
";
}
?>然后在瀏覽器進行測試，這時候我們已經實現了 redis 作為 mysql 的緩存服務器,但是如果更新了 mysql,redis
中仍然會有對應的 KEY,數據就不會更新,此時就會出現 mysql 和 redis 數據不一致的情
況。所以接下來就要通過 mysql 觸發器將改變的數據同步到 redis 中。
5，配置 gearman 實現數據同步
1. 安裝 gearman 軟件包:
gearmand libgearman-devel libgearman libevent libevent-devel
libevent-doc libevent-headers tokyocabinet
2,啟動服務
點擊(此處)折疊或打開
[root@vm2 html]# /etc/init.d/gearmand start
Starting gearmand: [ OK ]
3.安裝 php 的 gearman 擴展
https://pecl.php.net
yum install -y db*-devel
tar zxf gearman-1.1.2.tgz
cd gearman-1.1.2
./configure --with-php-config=/usr/bin/php-config
make && make install
# vim /etc/php.ini
extension=gearman.so
/etc/init.d/php-fpm ?restart
點擊(此處)折疊或打開
[root@vm2 html]# /etc/init.d/php-fpm restart
Stopping php-fpm: [ OK ]
Starting php-fpm: [ OK ]
4. 安裝 lib_mysqludf_json
lib_mysqludf_json UDF 庫函數將關系數據映射為 JSON 格式。通常,數據庫中的數據映
射為 JSON 格式,是通過程序來轉換的。
https://github.com/mysqludf/lib_mysqludf_json
yum install -y mysql-devel# unzip lib_mysqludf_json-master.zip
cd lib_mysqludf_json-master
gcc $(mysql_config --cflags) -shared -fPIC -o lib_mysqludf_json.so
lib_mysqludf_json.c
查看 mysql 的模塊目錄:
5. 安裝 gearman-mysql-udf
這個插件是用來管理調用 Gearman 的分布式的隊列。
https://launchpad.net/gearman-mysql-udf
tar zxf gearman-mysql-udf-0.6.tar.gz
cd gearman-mysql-udf-0.6
./configure --with-mysql=/usr/bin/mysql_config
--libdir=/usr/lib64/mysql/plugin/
make# make install
拷貝 lib_mysqludf_json.so 模塊:
cp lib_mysqludf_json.so /usr/lib64/mysql/plugin/
注冊 UDF 函數
點擊(此處)折疊或打開
mysql> CREATE FUNCTION json_object RETURNS STRING SONAME
'lib_mysqludf_json.so';
mysql> CREATE FUNCTION gman_do_background RETURNS STRING SONAME
'libgearman_mysql_udf.so';
mysql> CREATE FUNCTION gman_servers_set RETURNS STRING SONAME
'libgearman_mysql_udf.so';
查看函數
指定 gearman 的服務信息
6. 編寫 mysql 觸發器(根據實際情況編寫)
點擊(此處)折疊或打開
vim test.sql
use test;
DELIMITER $$
CREATE TRIGGER datatoredis AFTER UPDATE ON test FOR EACH ROW BEGIN
SET @RECV=gman_do_background('syncToRedis', json_object(NEW.id as
`id`, NEW.name as `name`));
END$$
DELIMITER ;
查看觸發器
7. 編寫 gearman 的 worker 端
點擊(此處)折疊或打開
vim worker.php
$worker = new GearmanWorker();
$worker->addServer();
$worker->addFunction('syncToRedis', 'syncToRedis');
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
while($worker->work());
function syncToRedis($job)
{
global $redis;
$workString = $job->workload();
$work = json_decode($workString);
if(!isset($work->id)){
return false;
}
$redis->set($work->id, $work->name); #這條語句就是將 id 作 KEY 和
name 作 VALUE 分開存儲,需要和前面寫的 php 測試代碼的存取一致。
}
?>
后臺運行 worker
nohup php worker.php &
然后在3上更新數據庫
然后再瀏覽器中進行測試
總結
以上是生活随笔為你收集整理的redis配置mysql缓存_Redis做mysql的缓存服务器的全部內容，希望文章能夠幫你解決所遇到的問題。
- 上一篇： mysql 二进制 存储格式化_解析MY
- 下一篇： mysql3.51 密码修改_mysql