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Add a configuration setting for the dummy event threshold (#7422)

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Add dummy_events_threshold which allows configuring the number of forward extremities a room needs for Synapse to send forward extremities in it.
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Brendan Abolivier 2020-05-07 11:35:23 +02:00 • committed by GitHub
parent d7c2df2fa3
commit d9b8d27494
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4 changed files with 31 additions and 1 deletions
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synapse/config/server.py
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@ -505,6 +505,9 @@ class ServerConfig(Config):
"cleanup_extremities_with_dummy_events", True
)
# The number of forward extremities in a room needed to send a dummy event.
self.dummy_events_threshold = config.get("dummy_events_threshold", 10)
self.enable_ephemeral_messages = config.get("enable_ephemeral_messages", False)
# Inhibits the /requestToken endpoints from returning an error that might leak
@ -823,6 +826,18 @@ class ServerConfig(Config):
# bind_addresses: ['::1', '127.0.0.1']
# type: manhole
# Forward extremities can build up in a room due to networking delays between
# homeservers. Once this happens in a large room, calculation of the state of
# that room can become quite expensive. To mitigate this, once the number of
# forward extremities reaches a given threshold, Synapse will send an
# org.matrix.dummy_event event, which will reduce the forward extremities
# in the room.
#
# This setting defines the threshold (i.e. number of forward extremities in the
# room) at which dummy events are sent. The default value is 10.
#
#dummy_events_threshold: 5
## Homeserver blocking ##