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Add membership column to current_state_events table.

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It turns out that doing a join is surprisingly expensive for the DB to
do when room_membership table is larger than the disk cache.
This commit is contained in:
Erik Johnston 2019-07-17 15:33:37 +01:00
parent c831c5b2bb
commit 6de09e07a6
5 changed files with 41 additions and 20 deletions
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6
synapse/storage/roommember.py
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@ -224,7 +224,7 @@ class RoomMemberWorkerStore(EventsWorkerStore):
results = []
if membership_list:
where_clause = "user_id = ? AND (%s) AND forgotten = 0" % (
" OR ".join(["membership = ?" for _ in membership_list]),
" OR ".join(["m.membership = ?" for _ in membership_list]),
)
args = [user_id]
@ -453,8 +453,8 @@ class RoomMemberWorkerStore(EventsWorkerStore):
sql = """
SELECT state_key FROM current_state_events AS c
INNER JOIN room_memberships USING (event_id)
WHERE membership = 'join'
INNER JOIN room_memberships AS m USING (event_id)
WHERE m.membership = 'join'
AND type = 'm.room.member'
AND c.room_id = ?
AND state_key LIKE ?