In our code, we are using FlashStoreSync:

https://github.com/padlocal/wechaty-puppet-padlocal/blob/a4b04b723fc4f75d08596a2952e08f4b5037983c/src/padlocal/cache-manager.ts#L7

the FlashStoreSync will provide a sync API with the cost of ... load all data in memory, which is not very efficient for memory usage.

I'd like to suggest that we should replace the FlashStoreSync with the FlashStore and using its async API. (with the latest version, with LevelDB backend).

Best practice

The wechaty-puppet-service module can shows the best practice for using FlashStore:

https://github.com/wechaty/wechaty-puppet-service/blob/main/src/client/payload-store.ts