Hello, I have some problems with queries to the collection of users, there are more than 130 thousand documents in it, and when I want to get the data of the (findOne) user, it takes time, and therefore the bot gives with a slight delay, which I do not like. How can this problem be corrected?
Hi @Ivan_Ermolaev ,
Welcome to MongoDB community
Is the filter of findOne query indexed?
Can you provide explain(true) of that query to review the plan?
Thanks
Pavel
I use mongoose as request processing, here is an example document from the collection of users and a request to this document.
Hi @Ivan_Ermolaev ,
To assist you I need the query and the . explain (true) run from a mongo shell
This will show the chosen plan to execute the query and plan …
If you cannot provide a query please provide the code.
Thanks
Pavel
If I understand you correctly, this is what I got. I apologize if I’m stupid somewhere, because I haven’t quite figured it out in mongodb yet
Hi @Ivan_Ermolaev ,
This is not a findOne query but a full find returning 134k documents in 80ms which is more than reasonable…
Are you sure this is the issue you are experiencing as I don’t see an issue here.
I would expect something like
db.users.findOne({userId : ...})
And the userId is indexed.
Thanks
Pavel
Hello, @Pavel_Duchovny,
came back with an answer. Here is a check of the request for a specific filter and the response received.
I was just told that there is a called collection type, can it be slow to respond to requests because of this type?
Hi @Ivan_Ermolaev ,
Those fields are not indexed and therefore a collection scan is performed which is highly suboptimal.
Please index { guiID : 1, userID : 1} and this will run much faster.
I see there is only one index which is default _id. Please see the following blog to index your other queries properly
Thanks
Pavel