redis作为数据库的缓存(LNMP框架)

基本架构

client -> app -> redis  (如果没有缓存再访问)->mysql  -> redis -> client

 

redis 和mysql 的数据结构不通用，需要转换

client -> php/py/java ->(r/w) redis ->  钩子函数 -> mysql

钩子函数过滤需要的数据存储到mysql

lnmp框架

 

scp test.php  test.sql worker.php root@server4:/root/

server 4  需要  nginx  php

yum remove openssl-devel -y

yum install  gearmand-1.1.12-18.el7.x86_64.rpm          php-fpm-5.4.16-46.el7.x86_64.rpm
libevent-devel-2.0.21-4.el7.x86_64.rpm     php-mysql-5.4.16-46.el7.x86_64.rpm
libgearman-1.1.12-18.el7.x86_64.rpm        php-pdo-5.4.16-46.el7.x86_64.rpm
libgearman-devel-1.1.12-18.el7.x86_64.rpm  php-pecl-gearman-1.1.2-1.el7.x86_64.rpm
libzip-0.10.1-8.el7.x86_64.rpm             php-pecl-igbinary-1.2.1-1.el7.x86_64.rpm
openssl-1.0.2k-16.el7.x86_64.rpm           php-pecl-redis-2.2.8-1.el7.x86_64.rpm
openssl-libs-1.0.2k-16.el7.x86_64.rpm      php-process-5.4.16-46.el7.x86_64.rpm
php-cli-5.4.16-46.el7.x86_64.rpm           php-xml-5.4.16-46.el7.x86_64.rpm
php-common-5.4.16-46.el7.x86_64.rpm  -y

systemctl start php-fpm

cp /root/test.php /usr/local/nginx/html/index.php

脚本在下一篇博客https://blog.csdn.net/m493096871/article/details/88032952

vim /usr/local/nginx/html/index.php

将redis  和mysql  的地址写对

vim /usr/local/nginx/conf/nginx.conf

 

 

server5 redis

安装好直接开

redis-server /etc/redis/6379.conf

 

server 6 mariadb-server

rpm -e `rpm -qa| grep mysql` --nodeps

yum install mariadb-server -y

rm -fr /var/lib/mysql/

systemctl start mariadb

mysql_secure_installation

mysql -pwestos

show databases;

create database test;

grant all on test.* to redis@'%'  identified by 'westos';

flush privileges;

scp /root/test.sql root@server6:/root/

mysql -pwestos < /root/test.sql

 

然后访问

 

开启数据同步

server4  作为gearmand

systemctl start gearmand

 

mysql (client) -> germand:4730 (job server)  -> worker (php/python/java)   自己编写

 

worker.php

https://blog.csdn.net/m493096871/article/details/88032952

 

server6mysql端

需要转换json     

lib_mysqludf_json-master.zip   #数据映射

gearman-mysql-udf-0.6.tar.gz   #数据发送

 

yum install -y unzip

unzip lib_mysqludf_json-master.zip

cd lib_mysqludf_json-master

#获取当前数据库的devel

yum install -y       mariadb-devel

gcc $(mysql_config --cflags) -shared -fPIC -o lib_mysqludf_json.so      lib_mysqludf_json.c

 cp lib_mysqludf_json.so /usr/lib64/mysql/plugin/

 

把模块放进去

mysql -pwestos

show global variables like 'plugin_dir';

 

创建函数

CREATE FUNCTION json_object RETURNS STRING SONAME  'lib_mysqludf_json.so';

select * from mysql.func;

 

tar zxf gearman-mysql-udf-0.6.tar.gz

需要  libgearman*  libevent-*  

libgearman-1.1.8-2.el7.x86_64.rpm        libgearman-devel-1.1.8-2.el7.x86_64.rpm

./configure  --libdir=/usr/lib64/mysql/plugin  --with-mysql  

make  && make install

mysql -pwestos

CREATE FUNCTION gman_do_background RETURNS STRING SONAME
'libgearman_mysql_udf.so';

CREATE FUNCTION gman_servers_set RETURNS STRING SONAME
'libgearman_mysql_udf.so';

select * from mysql.func;

 

SELECT gman_servers_set('172.25.11.4:4730');

触发器的test.

mysql -p < test.sql

SHOW TRIGGERS FROM test;

找到触发器trigger

cp worker.php  /usr/local/

修改worker的redis地址

vim /usr/local/worker.php

nohup php  /usr/local/worker.php  &>/dev/null

mysql -pwestos

use test;

update test set name='redhat' where id=1;

再访问redis服务器就可以了

已经在redis中变更了数据

 

 

数据库语句

DQL 查询

DCL  控制语句

DML 修改

DDL 删除