Yii2 Mirror a database table to redis for high speed active record query - mysql

Question

What I am trying to do is to cache all the results in a MySQL table that seldom changes, so as to minimize calls to database and increase query speed. There are about 100k records in there.
Is there a library that can sync changes made in this table, like say when a record is updated or inserted, the redis cache will also be invalidated and updated.
I have seen one for elasticsearch, but nothing for redis.
From this page:
Yii copying data from one model to another
There is this comment:
You can get all models attributes by:
$data = $model->attributes;
and assign them to another model
$anotherModel = new AnotherActiveRecord();
$anotherModel->setAttributes($data);
now another model will extract whatever it can from $data
I'm curious, can a Redis cache also "mirror" the data from a database table in a similar way?
Or is this just a bad idea overall, and its better off caching the query as it comes along, or is there a better way.

Answer 1

You can enable caching based on https://www.yiiframework.com/doc/guide/2.0/en/caching-data
[
'components' => [
'cache' => [
'class' => 'yii\redis\Cache',
'redis' => [
'hostname' => 'localhost',
'port' => 6379,
'database' => 0,
]
],
],
]
and then use Query Caching which natively defined on query builder level
$result = $db->cache(function ($db) {
// the result of the SQL query will be served from the cache
// if query caching is enabled and the query result is found in the cache
// ... perform SQL queries here ...
});
Also you can use Cache Dependencies based on your table (some criteria like if max(updated_at) is changed or not).
// Create a dependency on updated_at field
$dependency = new yii\caching\DbDependency(['sql' => 'select max(updated_at) from my_table']);
$duration = 60; // cache query results for 60 seconds.
$result = $db->cache(function ($db) {
// ... perform SQL queries here ...
return $result;
}, $duration, $dependency);