mirror of
https://github.com/block/buzz.git
synced 2026-11-14 13:21:02 +00:00
3f789d16b8
The presence cache subscribed to every kind:20001 heartbeat in the community and dropped the ones it wasn't tracking. On Block's Builderlab that is about 27 events a second, roughly 3 MB every 5 minutes (35 MB an hour) while the app is open, each one decoded and verified, to show presence for a few DM partners and open profiles. Subscribe with `authors` set to the tracked keys instead. Tracking a new key replaces the subscription with a wider one, opening the new one before closing the old, and reads the new key's snapshot once the subscription covers it. With nothing tracked there is no subscription. Signed-off-by: Tom Brow <tomb@squareup.com>