HybridRelations laravel mongo 真的很慢

Question

Used HybridRelations to store user notifications in mongoDB instead of mysql and imported 3million records and now user->notifications()->take(5)->get() or user->notifications()->paginate(5) takes over 30 seconds. any idea how to speed it up? on mysql with same amount of records it took 200 milliseconds.

notificaiton model has user_id and description and priority and read flag and user_id is set as an index.

Answer 1

Maybe this suggestion can help you.

When use user->notifications() means the query like that

db.notificaiton.find( {"user_id": <?> } )

That will get all record by user_id.

You can dump the user->notifications() and check. That should be Collection type and contains more than 5 records.

The solution is this . You can write specific method to ensure what your mongo query expression.

Answer 2

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问题是您排序的列应该是索引以及您使用 where 子句的列。