Get performance degrades 10x

I’m new to PouchDB / CouchDB. Very excited to find your package on account of the performance gains. Alas, I’m seeing performance problems. I guess it’s something on my side, but I’m not sure how to investigate / debug. Any input would be greatly appreciated.

I have 3 PouchDB databases which are doing one way replication from a cloudant instance. The databases are ~8k records 22MB, ~150 records 210k, ~3.5k records 5MB. The data is synced very quickly into my local PouchDB databases.

I can .allDocs() on the ~150 record database in ~200ms. Performance is great.

I’m trying to fetch ~350 documents from the database with 8k records. If I use .allDocs({keys: [...]}) it takes >40s to load the data. If I iterate with a Promise.each([...]) (from bluebird) to fetch each record serially via .get(id), each fetch can take up to 3s or more.

If I disable { adapter: "react-native-sqlite" } line, then performance is significantly better in the iOS simulator. The ~350 documents load in ~4s (via the serial fetch method).

Any advice on how I can debug this issue?

[chmac]

PS: Thanks for the advice so far, that startkey / endkey optimisation has gotten us from unacceptable performance into the realm of acceptable, really appreciate it.

[craftzdog]

I guess it’s ok to close. Thanks