Add a partial index to presence_stream to speed up startups (#10748)

Signed-off-by: Sean Quah <seanq@element.io>
This commit is contained in:
Sean 2021-09-03 17:16:56 +01:00 committed by GitHub
parent 0eae330a26
commit 924276f482
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4 changed files with 43 additions and 1 deletions

1
changelog.d/10748.misc Normal file
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@ -0,0 +1 @@
Add an index to `presence_stream` to hopefully speed up startups a little.

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@ -46,6 +46,7 @@ from synapse.storage.databases.main.events_bg_updates import (
from synapse.storage.databases.main.media_repository import (
MediaRepositoryBackgroundUpdateStore,
)
from synapse.storage.databases.main.presence import PresenceBackgroundUpdateStore
from synapse.storage.databases.main.pusher import PusherWorkerStore
from synapse.storage.databases.main.registration import (
RegistrationBackgroundUpdateStore,
@ -179,6 +180,7 @@ class Store(
EndToEndKeyBackgroundStore,
StatsStore,
PusherWorkerStore,
PresenceBackgroundUpdateStore,
):
def execute(self, f, *args, **kwargs):
return self.db_pool.runInteraction(f.__name__, f, *args, **kwargs)

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@ -29,7 +29,26 @@ if TYPE_CHECKING:
from synapse.server import HomeServer
class PresenceStore(SQLBaseStore):
class PresenceBackgroundUpdateStore(SQLBaseStore):
def __init__(
self,
database: DatabasePool,
db_conn: Connection,
hs: "HomeServer",
):
super().__init__(database, db_conn, hs)
# Used by `PresenceStore._get_active_presence()`
self.db_pool.updates.register_background_index_update(
"presence_stream_not_offline_index",
index_name="presence_stream_state_not_offline_idx",
table="presence_stream",
columns=["state"],
where_clause="state != 'offline'",
)
class PresenceStore(PresenceBackgroundUpdateStore):
def __init__(
self,
database: DatabasePool,
@ -332,6 +351,8 @@ class PresenceStore(SQLBaseStore):
the appropriate time outs.
"""
# The `presence_stream_state_not_offline_idx` index should be used for this
# query.
sql = (
"SELECT user_id, state, last_active_ts, last_federation_update_ts,"
" last_user_sync_ts, status_msg, currently_active FROM presence_stream"

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@ -0,0 +1,18 @@
/*
* Copyright 2021 The Matrix.org Foundation C.I.C.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
INSERT INTO background_updates (ordering, update_name, progress_json) VALUES
(6304, 'presence_stream_not_offline_index', '{}');