The content of this article is about laravel learning: the implementation of master-slave read-write separation configuration. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Find the following code in the connection factory of DB
.../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']);
}The factory class performs reading operations by randomly obtaining the read DB configuration. From this, it can be concluded that the DB configuration should be as follows
'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' => '',
]Enhanced version, supports multiple masters and multiple slaves, Supports independent user names and passwords. The configuration is as follows
'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' => '',
]Verification
Enable MySQL's general-log and monitor log changes through tail -f to determine whether the configuration is effective
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