Brandon Simmons c425b554b8 server(events): utilize proper backpressure scheme (close #3839) (#4013) ... * Test working through a backlog of change events * Use a slightly more performant threaded http server in eventing pytests This helped locally but not on CI it seems... * Rework event processing for backpressure. Closes #3839 With loo low `HASURA_GRAPHQL_EVENTS_FETCH_INTERVAL` and/or slow webhooks and/or too small `HASURA_GRAPHQL_EVENTS_HTTP_POOL_SIZE` we might previously check out events from the DB faster than we can service them, leading to space leaks, weirdness, etc. Other changes: - avoid fetch interval sleep latency when we previously did a non-empty fetch - prefetch event batch while http pool is working - warn when it appears we can't keep up with events being generated - make some effort to process events in creation order so we don't starve older ones. ALSO NOTE: HASURA_GRAPHQL_EVENTS_FETCH_INTERVAL changes semantics slightly, since it only comes into play after an empty fetch. The old semantics weren't documented in detail, so I think this is fine.		2020-03-11 11:57:31 +05:30
..
DDL	allow custom mutations through actions (#3042)	2020-02-13 23:08:23 +05:30
DML	allow custom mutations through actions (#3042)	2020-02-13 23:08:23 +05:30
Types	server(events): utilize proper backpressure scheme (close #3839) (#4013)	2020-03-11 11:57:31 +05:30
GBoolExp.hs	fix few bugs related to nested insert returning (fix #3609, #3642, #3271) (#3618)	2020-02-04 21:04:17 +05:30
Instances.hs	allow custom mutations through actions (#3042)	2020-02-13 23:08:23 +05:30
Types.hs	allow custom mutations through actions (#3042)	2020-02-13 23:08:23 +05:30