Switching Sync Prams .

[KarimTamani]

useEffect(() => {
  (async () => {
    await powerSync.connect(connector, {
      params: { projectId },
    });
  })();
}, [projectId]);

Description
I’m building a project where I use PowerSync to sync a local SQLite database with Postgres via a custom backend connector.

I need to load bucket data based on a projectId attribute, so the idea is that instead of syncing all projects, I only sync the currently opened project.

Right now, every time the user switches projects, I call powerSync.connect(...) again with a new params.
However, this closes the old WebSocket connection and creates a new one, which introduces a noticeable delay before data is available.

Problem
Frequent connect calls just to change parameters aren’t efficient.

Switching projects feels slow because of the teardown + reconnect.

Question / Feature Request
Is there an alternative way to update connection params dynamically (e.g., something like a setParams API) without forcing a full reconnect?.

Thank you !

[whygee-dev]

We experience the same problem, AFAIK currently there isn't a way to do this but it should be possible in the near feature with sync streams that should act as an alternative to client params.

Related sources:
https://roadmap.powersync.com/c/129-sync-streams
powersync-ja/powersync-sqlite-core#112

[simolus3]

It's worth noting that adding new subscriptions with sync streams will also involve a reconnect (at least initially), but due to caching it should generally be much faster when switching between parameters.