42 Commits

Author	SHA1	Message	Date
Guo Xiang Tan	08b268c5bc	Be more forceful in disconnecting connections during failover.	2018-09-04 10:32:43 +08:00
Guo Xiang Tan	7c173265d5	FIX: Don't clear connections on the same process.	2018-06-12 13:06:25 +08:00
Guo Xiang Tan	646ed87aba	Clear all connections once master recovers.	2018-06-12 12:13:59 +08:00
Guo Xiang Tan	fd75e54793	Disconnect the pool during failover and fallback.	2018-06-12 11:09:19 +08:00
Guo Xiang Tan	a7be68500d	Better error reporting in PostgreSQL fallover thread.	2018-06-12 09:39:11 +08:00
Guo Xiang Tan	2adae2a0b6	FIX: Be more aggressive in checking master when trying to fallback.	2018-06-12 00:09:15 +08:00
Guo Xiang Tan	c0b0c66a9e	FIX: PostgreSQL fallback thread doesn't run server starts in readonly.	2018-06-11 15:23:58 +08:00
Guo Xiang Tan	d06af14c26	FIX: Notify all processes to fallback when PostgreSQL recovers.	2018-06-11 15:10:28 +08:00
Guo Xiang Tan	d192924876	FIX: Can't boot Discourse app with read-only PG connection take 2.	2018-06-11 13:25:51 +08:00
Guo Xiang Tan	5656e8f366	FIX: Can't boot Discourse with a read-only PG connection.	2018-06-11 12:29:23 +08:00
Guo Xiang Tan	a509f466a0	Expose replica_postgresql_connection to ActiveRecord::Base.	2017-11-24 09:35:45 +08:00
Guo Xiang Tan	c390169b71	Move monkey patch into freedom_patchers.	2017-11-21 14:15:11 +08:00
Guo Xiang Tan	337ccfa3a6	MONKEYPATCH: Allow us to disable the use of advisory locks during migration.	2017-11-21 14:06:22 +08:00
Guo Xiang Tan	54455fa40b	Use MessageBus to get other processes to failover faster.	2017-10-23 17:58:24 +08:00
Guo Xiang Tan	7673684d91	Allow DistributedCache#delete to not publish changes.	2017-10-20 23:03:42 +08:00
Guo Xiang Tan	fe1e78ddf4	Make PostgreSQL failover work with distributed cache.	2017-10-20 17:15:29 +08:00
Guo Xiang Tan	d3003592cd	Connection may be nil.	2017-10-20 12:10:03 +08:00
Guo Xiang Tan	057571d173	Raise errors in PostgreSQLFallbackHandler threads.	2017-10-20 12:06:03 +08:00
Guo Xiang Tan	24e3e321e1	Only initialize distributed cache once.	2017-10-20 07:17:41 +08:00
Guo Xiang Tan	c7402ef794	FIX: Use a distributed cache to store failover state.	2017-10-20 05:46:19 +08:00
Guo Xiang Tan	1b5ee0ae72	FIX: Couldn't boot Discourse app with a readonly postgres.	2017-10-17 13:44:30 +08:00
Guo Xiang Tan	5f76e5062d	Pause Sidekiq when postgres failovers.	2017-10-16 19:48:31 +08:00
Guo Xiang Tan	d4388f54a2	FIX: Use exact patht to ensure we always redirect with the right format.	2017-09-28 10:29:41 +08:00
Guo Xiang Tan	9540b952fd	Fix broken condition in PostgresqlFallbackAdapter.	2017-09-25 13:48:59 +08:00
Guo Xiang Tan	5012d46cbd	Add rubocop to our build. (#5004)	2017-07-28 10:20:09 +09:00
Guo Xiang Tan	cdd550e947	Use a different Redis key when PG failover sets site to readonly mode.	2017-01-11 16:38:49 +08:00
Guo Xiang Tan	1e7de826dc	FIX: Remove unused code.	2016-11-30 16:39:38 +08:00
Guo Xiang Tan	f794c25f60	FIX: Ensure a Thread is always running.	2016-11-30 16:38:21 +08:00
Guo Xiang Tan	e8a3043129	Spawn a single thread that checks for PostgreSQL fallback.	2016-11-17 13:52:08 +08:00
Guo Xiang Tan	880b7e1053	FIX: Connections were incorrectly going to master when failing over.	2016-05-30 11:50:02 +08:00
Guo Xiang Tan	86ed6c7d5e	Revert "Clear read only timestamp in Redis when switching back to master." ... This reverts commit f891430f32.	2016-05-27 18:02:26 +08:00
Guo Xiang Tan	f891430f32	Clear read only timestamp in Redis when switching back to master.	2016-05-18 10:17:03 +08:00
Guo Xiang Tan	d783a393ec	Fix randomly failing test.	2016-03-08 12:51:51 +08:00
Guo Xiang Tan	fcc86d3a9d	FIX: PostgreSQLFallbackHandler was bouncing in and out of readonly.	2016-03-08 10:02:38 +08:00
Guo Xiang Tan	b41aa27a84	FEATURE: Support multisite in PostgreSQL fallback adapter.	2016-03-02 21:37:37 +08:00
Guo Xiang Tan	c344bd3fd1	FIX: Make sure we write inside a lock.	2016-02-23 23:25:59 +08:00
Guo Xiang Tan	b0d2e69cc3	FIX: Update log level to warn.	2016-02-12 15:18:34 +08:00
Guo Xiang Tan	74dc838f5f	FIX: Add a lock to ensure only a single thread is running each time.	2016-02-05 10:47:47 +08:00
Guo Xiang Tan	c532d7d1ae	Internally AR::Base.establish_connection removes the current connection.	2016-02-05 08:51:50 +08:00
Guo Xiang Tan	a08496bb1a	Remove Concurrent::TimerTask which spawns a long lasting Thread.	2016-02-05 08:51:50 +08:00
Guo Xiang Tan	0058d09e35	Second attempt which removes any kind proxying.	2016-02-05 08:51:10 +08:00
Guo Xiang Tan	46589a1a0c	FEATURE: AR adapter to failover to a replica DB server.	2016-02-05 08:51:10 +08:00