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9c3e5e467b
# Which Problems Are Solved
Queries currently execute 3 statements, begin, query, commit
# How the Problems Are Solved
remove transaction handling from query methods in database package
# Additional Changes
- Bump versions of `core_grpc_dependencies`-receipt in Makefile
# Additional info
During load tests we saw a lot of idle transactions of `zitadel_queries`
application name which is the connection pool used to query data in
zitadel. Executed query:
`select query_start - xact_start, pid, application_name, backend_start,
xact_start, query_start, state_change, wait_event_type,
wait_event,substring(query, 1, 200) query from pg_stat_activity where
datname = 'zitadel' and state <> 'idle';`
Mostly the last query executed was `begin isolation level read committed
read only`.
example:
```
?column? | pid | application_name | backend_start | xact_start | query_start | state_change | wait_event_type | wait_event | query
-----------------+-------+----------------------------+-------------------------------+-------------------------------+-------------------------------+-------------------------------+-----------------+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
00:00:00 | 33030 | zitadel_queries | 2024-10-16 16:25:53.906036+00 | 2024-10-16 16:30:19.191661+00 | 2024-10-16 16:30:19.191661+00 | 2024-10-16 16:30:19.19169+00 | Client | ClientRead | begin isolation level read committed read only
00:00:00 | 33035 | zitadel_queries | 2024-10-16 16:25:53.909629+00 | 2024-10-16 16:30:19.19179+00 | 2024-10-16 16:30:19.19179+00 | 2024-10-16 16:30:19.191805+00 | Client | ClientRead | begin isolation level read committed read only
00:00:00.00412 | 33028 | zitadel_queries | 2024-10-16 16:25:53.904247+00 | 2024-10-16 16:30:19.187734+00 | 2024-10-16 16:30:19.191854+00 | 2024-10-16 16:30:19.191964+00 | Client | ClientRead | SELECT created_at, event_type, "sequence", "position", payload, creator, "owner", instance_id, aggregate_type, aggregate_id, revision FROM eventstore.events2 WHERE instance_id = $1 AND aggregate_type
00:00:00.084662 | 33134 | zitadel_es_pusher | 2024-10-16 16:29:54.979692+00 | 2024-10-16 16:30:19.178578+00 | 2024-10-16 16:30:19.26324+00 | 2024-10-16 16:30:19.263267+00 | Client | ClientRead | RELEASE SAVEPOINT cockroach_restart
00:00:00.084768 | 33139 | zitadel_es_pusher | 2024-10-16 16:29:54.979585+00 | 2024-10-16 16:30:19.180762+00 | 2024-10-16 16:30:19.26553+00 | 2024-10-16 16:30:19.265531+00 | LWLock | WALWriteLock | commit
00:00:00.077377 | 33136 | zitadel_es_pusher | 2024-10-16 16:29:54.978582+00 | 2024-10-16 16:30:19.187883+00 | 2024-10-16 16:30:19.26526+00 | 2024-10-16 16:30:19.265431+00 | Client | ClientRead | WITH existing AS ( +
| | | | | | | | | (SELECT instance_id, aggregate_type, aggregate_id, "sequence" FROM eventstore.events2 WHERE instance_id = $1 AND aggregate_type = $2 AND aggregate_id = $3 ORDER BY "sequence" DE
00:00:00.012309 | 33123 | zitadel_es_pusher | 2024-10-16 16:29:54.963484+00 | 2024-10-16 16:30:19.175066+00 | 2024-10-16 16:30:19.187375+00 | 2024-10-16 16:30:19.187376+00 | IO | WalSync | commit
00:00:00 | 33034 | zitadel_queries | 2024-10-16 16:25:53.90791+00 | 2024-10-16 16:30:19.262921+00 | 2024-10-16 16:30:19.262921+00 | 2024-10-16 16:30:19.263133+00 | Client | ClientRead | begin isolation level read committed read only
00:00:00 | 33039 | zitadel_queries | 2024-10-16 16:25:53.914106+00 | 2024-10-16 16:30:19.191676+00 | 2024-10-16 16:30:19.191676+00 | 2024-10-16 16:30:19.191687+00 | Client | ClientRead | begin isolation level read committed read only
00:00:00.24539 | 33083 | zitadel_projection_spooler | 2024-10-16 16:27:49.895548+00 | 2024-10-16 16:30:19.020058+00 | 2024-10-16 16:30:19.265448+00 | 2024-10-16 16:30:19.26546+00 | Client | ClientRead | SAVEPOINT exec_stmt
00:00:00 | 33125 | zitadel_es_pusher | 2024-10-16 16:29:54.963859+00 | 2024-10-16 16:30:19.191715+00 | 2024-10-16 16:30:19.191715+00 | 2024-10-16 16:30:19.191729+00 | Client | ClientRead | begin
00:00:00.004292 | 33032 | zitadel_queries | 2024-10-16 16:25:53.906624+00 | 2024-10-16 16:30:19.187713+00 | 2024-10-16 16:30:19.192005+00 | 2024-10-16 16:30:19.192062+00 | Client | ClientRead | SELECT created_at, event_type, "sequence", "position", payload, creator, "owner", instance_id, aggregate_type, aggregate_id, revision FROM eventstore.events2 WHERE instance_id = $1 AND aggregate_type
00:00:00 | 33031 | zitadel_queries | 2024-10-16 16:25:53.906422+00 | 2024-10-16 16:30:19.191625+00 | 2024-10-16 16:30:19.191625+00 | 2024-10-16 16:30:19.191645+00 | Client | ClientRead | begin isolation level read committed read only
```
The amount of idle transactions is significantly less if the query
transactions are removed:
example:
```
?column? | pid | application_name | backend_start | xact_start | query_start | state_change | wait_event_type | wait_event | query
-----------------+-------+----------------------------+-------------------------------+-------------------------------+-------------------------------+-------------------------------+-----------------+------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
00:00:00.000094 | 32741 | zitadel_queries | 2024-10-16 16:23:49.73935+00 | 2024-10-16 16:24:59.785589+00 | 2024-10-16 16:24:59.785683+00 | 2024-10-16 16:24:59.785684+00 | | | SELECT created_at, event_type, "sequence", "position", payload, creator, "owner", instance_id, aggregate_type, aggregate_id, revision FROM eventstore.events2 WHERE instance_id = $1 AND aggregate_type
00:00:00 | 32762 | zitadel_es_pusher | 2024-10-16 16:24:02.275136+00 | 2024-10-16 16:24:59.784586+00 | 2024-10-16 16:24:59.784586+00 | 2024-10-16 16:24:59.784607+00 | Client | ClientRead | begin
00:00:00.000167 | 32742 | zitadel_queries | 2024-10-16 16:23:49.740489+00 | 2024-10-16 16:24:59.784274+00 | 2024-10-16 16:24:59.784441+00 | 2024-10-16 16:24:59.784442+00 | | | with usr as ( +
| | | | | | | | | select u.id, u.creation_date, u.change_date, u.sequence, u.state, u.resource_owner, u.username, n.login_name as preferred_login_name +
| | | | | | | | | from projections.users13 u +
| | | | | | | | | left join projections.l
00:00:00.256014 | 32759 | zitadel_projection_spooler | 2024-10-16 16:24:01.418429+00 | 2024-10-16 16:24:59.52959+00 | 2024-10-16 16:24:59.785604+00 | 2024-10-16 16:24:59.785649+00 | Client | ClientRead | UPDATE projections.milestones SET reached_date = $1 WHERE (instance_id = $2) AND (type = $3) AND (reached_date IS NULL)
00:00:00.014199 | 32773 | zitadel_es_pusher | 2024-10-16 16:24:02.320404+00 | 2024-10-16 16:24:59.769509+00 | 2024-10-16 16:24:59.783708+00 | 2024-10-16 16:24:59.783709+00 | IO | WalSync | commit
00:00:00 | 32765 | zitadel_es_pusher | 2024-10-16 16:24:02.28173+00 | 2024-10-16 16:24:59.780413+00 | 2024-10-16 16:24:59.780413+00 | 2024-10-16 16:24:59.780426+00 | Client | ClientRead | begin
00:00:00.012729 | 32777 | zitadel_es_pusher | 2024-10-16 16:24:02.339737+00 | 2024-10-16 16:24:59.767432+00 | 2024-10-16 16:24:59.780161+00 | 2024-10-16 16:24:59.780195+00 | Client | ClientRead | RELEASE SAVEPOINT cockroach_restart
```
---------
Co-authored-by: Tim Möhlmann <tim+github@zitadel.com>
Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Max Peintner <max@caos.ch>
Co-authored-by: Elio Bischof <elio@zitadel.com>
Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
Co-authored-by: Miguel Cabrerizo <30386061+doncicuto@users.noreply.github.com>
Co-authored-by: Joakim Lodén <Loddan@users.noreply.github.com>
Co-authored-by: Yxnt <Yxnt@users.noreply.github.com>
Co-authored-by: Stefan Benz <stefan@caos.ch>
Co-authored-by: Harsha Reddy <harsha.reddy@klaviyo.com>
Co-authored-by: Zach H <zhirschtritt@gmail.com>
|
||
|---|---|---|
| .. | ||
| crdb_test.go | ||
| crdb.go | ||
| local_crdb_test.go | ||
| query_test.go | ||
| query.go | ||