synapse-product/changelog.d/11974.misc
Erik Johnston 2b5643b3af
Optimise calculating device_list changes in /sync. (#11974)
For users with large accounts it is inefficient to calculate the set of
users they share a room with (and takes a lot of space in the cache).
Instead we can look at users whose devices have changed since the last
sync and check if they share a room with the syncing user.
2022-02-15 15:01:00 +00:00

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Optimise calculating device_list changes in `/sync`.