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Reduce federation presence replication traffic

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This is mainly done by moving the calculation of where to send presence
updates from the presence handler to the transaction queue, so we only
need to send the presence event (and not the destinations) across the
replication connection. Before we were duplicating by sending the full
state across once per destination.
This commit is contained in:
Erik Johnston 2017-04-10 16:48:30 +01:00
parent 2e6f5a4910
commit 29574fd5b3
6 changed files with 139 additions and 80 deletions
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12
synapse/app/federation_sender.py
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@ -32,6 +32,7 @@ from synapse.replication.slave.storage.transactions import TransactionStore
from synapse.replication.slave.storage.devices import SlavedDeviceStore
from synapse.replication.tcp.client import ReplicationClientHandler
from synapse.storage.engines import create_engine
from synapse.storage.presence import PresenceStore
from synapse.util.async import Linearizer
from synapse.util.httpresourcetree import create_resource_tree
from synapse.util.logcontext import LoggingContext, PreserveLoggingContext, preserve_fn
@ -80,6 +81,17 @@ class FederationSenderSlaveStore(
return rows[0][0] if rows else -1
# XXX: This is a bit broken because we don't persist the accepted list in a
# way that can be replicated. This means that we don't have a way to
# invalidate the cache correctly.
# This is fine since in practice nobody uses the presence list stuff...
get_presence_list_accepted = PresenceStore.__dict__[
"get_presence_list_accepted"
]
get_presence_list_observers_accepted = PresenceStore.__dict__[
"get_presence_list_observers_accepted"
]
class FederationSenderServer(HomeServer):
def get_db_conn(self, run_new_connection=True):