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31 lines
1.5 KiB
Plaintext
31 lines
1.5 KiB
Plaintext
/* Copyright 2023 The Matrix.org Foundation C.I.C
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-- Mark the worker_read_write_locks* tables as UNLOGGED, to increase
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-- performance. This means that we don't replicate the tables, and they get
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-- truncated on a crash. This is acceptable as a) in those cases it's likely
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-- that Synapse needs to be stopped/restarted anyway, and b) the locks are
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-- considered best-effort anyway.
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-- We need to remove and recreate the circular foreign key references, as
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-- UNLOGGED tables can't reference normal tables.
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ALTER TABLE worker_read_write_locks_mode DROP CONSTRAINT IF EXISTS worker_read_write_locks_mode_foreign;
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ALTER TABLE worker_read_write_locks SET UNLOGGED;
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ALTER TABLE worker_read_write_locks_mode SET UNLOGGED;
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ALTER TABLE worker_read_write_locks_mode ADD CONSTRAINT worker_read_write_locks_mode_foreign
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FOREIGN KEY (lock_name, lock_key, token) REFERENCES worker_read_write_locks(lock_name, lock_key, token) DEFERRABLE INITIALLY DEFERRED;
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