synapse/changelog.d/17666.misc
Erik Johnston 786de8570b
Speed up fetching partial-state rooms on sliding sync (#17666)
Instead of having a large cache of `room_id -> bool` about whether a
room is partially stated, replace with a "fetch rooms the user is which
are partially-stated". This is a lot faster as the set of partially
stated rooms at any point across the whole server is small, and so such
a query is fast.

The main issue with the bulk cache lookup is the CPU time looking all
the rooms up in the cache.
2024-09-06 11:12:54 +01:00

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Small performance improvement in speeding up sliding sync.