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Prefill the device_list_stream_cache #12367

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merged 3 commits into from
Apr 4, 2022
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Prefill the device_list_stream_cache #12367

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36383d4
Prefill the device_list_stream_cache
erikjohnston Apr 4, 2022
f986db2
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erikjohnston Apr 4, 2022
ea2d013
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erikjohnston Apr 4, 2022
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1 change: 1 addition & 0 deletions changelog.d/12367.feature
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Reduce overhead of restarting synchrotrons.
12 changes: 11 additions & 1 deletion synapse/replication/slave/storage/devices.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,8 +47,18 @@ def __init__(
],
)
device_list_max = self._device_list_id_gen.get_current_token()
device_list_prefill, min_device_list_id = self.db_pool.get_cache_dict(
db_conn,
"device_lists_stream",
entity_column="user_id",
stream_column="stream_id",
max_value=device_list_max,
limit=1000,
)
self._device_list_stream_cache = StreamChangeCache(
"DeviceListStreamChangeCache", device_list_max
"DeviceListStreamChangeCache",
min_device_list_id,
prefilled_cache=device_list_prefill,
)
self._user_signature_stream_cache = StreamChangeCache(
"UserSignatureStreamChangeCache", device_list_max
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12 changes: 11 additions & 1 deletion synapse/storage/databases/main/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -183,8 +183,18 @@ def __init__(
super().__init__(database, db_conn, hs)

device_list_max = self._device_list_id_gen.get_current_token()
device_list_prefill, min_device_list_id = self.db_pool.get_cache_dict(
db_conn,
"device_lists_stream",
entity_column="user_id",
stream_column="stream_id",
max_value=device_list_max,
limit=1000,
)
self._device_list_stream_cache = StreamChangeCache(
"DeviceListStreamChangeCache", device_list_max
"DeviceListStreamChangeCache",
min_device_list_id,
prefilled_cache=device_list_prefill,
)
self._user_signature_stream_cache = StreamChangeCache(
"UserSignatureStreamChangeCache", device_list_max
Expand Down