Firestore查询很多文件

Question

I have a firestore database with a lot of data in it.

In my application I have to get a lot of documents from it at once. I know the exact keys of them. It is maximum 500-600 documents at a time, and an average of 300 of them, with only 3 fields in each. Is the best way to get them one-by-one in a new thread and request for each? This needs a lot of parallel connections..

This is what I do now, but it is a bit slow (several secs), I am looking for a better solution now. I have no opportunity to merge these into bigger documents, as I may need very different set of them...

I am running these on a ktor backend server.

Answer 1

Using the Admin SDK, you can easily retrieve multiple documents at the same time, using getAll (linked to the documentation). Simply call firestore.getAll and pass a list of document references.