本篇文章给大家带来的内容是关于laravel学习：主从读写分离配置的实现，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
在DB的连接工厂中找到以下代码
.../vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php
/** * Get the read configuration for a read / write connection. * * @param array $config * @return array */ protected function getReadConfig(array $config) { $readConfig = $this->getReadWriteConfig($config, 'read'); return $this->mergeReadWriteConfig($config, $readConfig); } /** * Get a read / write level configuration. * * @param array $config * @param string $type * @return array */ protected function getReadWriteConfig(array $config, $type) { if (isset($config[$type][0])) { return $config[$type][array_rand($config[$type])]; } return $config[$type]; } /** * Merge a configuration for a read / write connection. * * @param array $config * @param array $merge * @return array */protected function mergeReadWriteConfig(array $config, array $merge){ return array_except(array_merge($config, $merge), ['read', 'write']);}工厂类通过随机获取读DB配置来进行读取操作，由此可推出DB的配置应该如下
'mysql' => [ 'write' => [ 'host' => '192.168.1.180', ], 'read' => [ ['host' => '192.168.1.182'], ['host' => '192.168.1.179'], ], 'driver' => 'mysql', 'database' => 'database', 'username' => 'root', 'password' => '', 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', ]
加强版，支持多主多从，支持独立用户名和密码，配置如下
'mysql' => [ 'write' => [ [ 'host' => '192.168.1.180', 'username' => '', 'password' => '', ], ], 'read' => [ [ 'host' => '192.168.1.182', 'username' => '', 'password' => '', ], [ 'host' => '192.168.1.179', 'username' => '', 'password' => '', ], ], 'driver' => 'mysql', 'database' => 'database', 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', ]
验证
开启MySQL的general-log，通过tail -f的方式监控log变化来确定配置是否生效
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