Trim room?

[Wh1isper]

Problem

Hi, I've been working on persistence for pycrdt recently. In the project, the store(ystore) seems to grow infinitely. Do we need to provide a trim method for update compression?

I noticed that when a new connection is established, the latest document is directly synchronized, instead of transferring all the updates for the client to redo/undo.

Proposed Solution

It seems that we don't need to save all updates, just the most recent ones? Providing a trim method allows the server to compress updates that no longer needed, similar to disk organizing.

Additional context

[davidbrochart]

Have you looked at document_ttl?

[Wh1isper]

Oh thanks! I referenced the FileYStore implementation and missed the SQLiteYStore's. Sorry about that! The document_ttl implementation is basically the same as my thoughts :)

Out of curiosity, does FileYStore doesn't require trim, or is there another way to safely trim them?

[davidbrochart]

It's not implemented for FileYStore but it would be good to have.