Commit graph

32 commits

Author SHA1 Message Date
rinpatch
4ce6179dc7 gun ConnectionPool: replace casts with calls
The slowdown from this is most likely immesurable, however it eliminates
possible false positives when tracking dead clients.
2020-07-28 20:49:48 +03:00
rinpatch
7115c5f82e ConnectionPool.Worker: do not stop with an error when there is a timeout
This produced error log messages about GenServer termination
every time the connection was not open due to a timeout.

Instead we stop with `{:shutdown, <gun_error>}` since shutting down
when the connection can't be established is normal behavior.
2020-07-15 15:58:08 +03:00
href
afd378f84c host is now useless 2020-07-15 15:26:35 +03:00
href
ce1a42bd04 Simplify TLS opts
- `verify_fun` is not useful now
- use `customize_check_hostname` (OTP 20+ so OK)
- `partial_chain` is useless as of OTP 21.1 (wasn't there, but hackney/..
uses it)
2020-07-15 15:26:35 +03:00
href
53ba6815b1 parentheses... 2020-07-15 15:26:35 +03:00
href
23d714ed30 Fix race in enforcer/reclaimer start 2020-07-15 15:26:35 +03:00
href
6a0f2bdf8c Ensure connections error get known by the caller 2020-07-15 15:26:35 +03:00
href
46dd276d68 ConnectionPool.Worker: Open gun conn in continue instead of init 2020-07-15 15:26:35 +03:00
rinpatch
a705637dcf Connection Pool: fix LRFU implementation to not actually be LRU
The numbers of the native time unit were so small the CRF was always 1,
making it an LRU. This commit switches the time to miliseconds and changes
the time delta multiplier to the one yielding mostly highest hit rates according
to the paper
2020-07-15 15:26:35 +03:00
rinpatch
007843b75e Add documentation for new connection pool settings and remove some
`:retry_timeout` and `:retry` got removed because reconnecting on failure is
something the new pool intentionally doesn't do.

`:max_overflow` had to go in favor of `:max_waiting`, I didn't reuse the key because
the settings are very different in their behaviour.

`:checkin_timeout` got removed in favor of `:connection_acquisition_wait`,
I didn't reuse the key because the settings are somewhat different.

I didn't do any migrations/deprecation warnings/changelog entries because
these settings were never in stable.
2020-07-15 15:26:35 +03:00
rinpatch
7882f28569 Use erlang monotonic time for CRF calculation 2020-07-15 15:26:35 +03:00
rinpatch
281ddd5e37 Connection pool: fix connections being supervised by gun_sup 2020-07-15 15:26:35 +03:00
rinpatch
1b15cb066c Connection pool: Add client death tracking
While running this in production I noticed a number of ghost
processes with all their clients dead before they released the connection,
so let's track them to log it and remove them from clients
2020-07-15 15:26:35 +03:00
rinpatch
e94ba05e52 Connection pool: Fix a possible infinite recursion if the pool is exhausted 2020-07-15 15:26:35 +03:00
rinpatch
7738fbbaf5 Connection pool: implement logging and telemetry events 2020-07-15 15:26:25 +03:00
rinpatch
0ffde499b8 Connection Pool: register workers using :via 2020-07-15 15:24:47 +03:00
rinpatch
ec9d0d146b Connection pool: Fix race conditions in limit enforcement
Fixes race conditions in limit enforcement by putting worker processes
in a DynamicSupervisor
2020-07-15 15:17:27 +03:00
rinpatch
d08b157699 Connection pool: check that there actually is a result
Sometimes connections died before being released to the pool, resulting
in MatchErrors
2020-07-15 15:17:27 +03:00
rinpatch
fffbcffb8c Connection Pool: don't enforce pool limits if no new connection needs to be opened 2020-07-15 15:17:27 +03:00
rinpatch
58a4f350a8 Refactor gun pooling and simplify adapter option insertion
This patch refactors gun pooling to use Elixir process registry and
simplifies adapter option insertion.

Having the pool use process registry instead of a GenServer has a number of advantages:
- Simpler code: the initial implementation adds about half the lines of code it deletes
- Concurrency: unlike a GenServer, ETS-based registry can handle multiple checkout/checkin
requests at the same time
- Precise and easy idle connection clousure: current proposal for closing idle connections in
the GenServer-based pool needs to filter through all connections once a minute and compare their
last active time with closing time. With Elixir process registry this can be done
by just using `Process.send_after`/`Process.cancel_timer` in the worker process.
- Lower memory footprint: In my tests `gun-memory-leak` branch uses about 290mb on peak load (250 connections)
and 235mb on idle (5-10 connections). Registry-based pool uses 210mb on idle and 240mb on peak load
2020-07-15 15:17:27 +03:00
Alexander Strizhakov
5739c498c0
fix for gun connections pool 2020-04-08 18:46:01 +03:00
Alexander Strizhakov
1306b92997
clean up 2020-03-12 18:29:07 +03:00
Alexander Strizhakov
f39e1b9eff
add verify tls_opts only when we open connection
for other requests tesla will add tls_opts
2020-03-10 15:54:11 +03:00
Alexander Strizhakov
c93c3096d5
little refactor 2020-03-06 21:04:18 +03:00
Mark Felder
d9c5ae7c09 Update Copyrights for gun related files 2020-03-03 17:16:24 -06:00
Alexander Strizhakov
884d9710b2
refactoring for gun api modules 2020-03-03 19:24:14 +03:00
Alexander Strizhakov
8854770fc4
retry and retry_timeout settings default change 2020-03-03 18:01:35 +03:00
Alexander Strizhakov
8fc00b7cbf
return error if connection failed to open 2020-03-03 16:42:24 +03:00
Alexander Strizhakov
7d68924e4f
naming 2020-03-03 16:42:24 +03:00
Alexander Strizhakov
e605e79df9
simplification of formatting host method
case for format_proxy method
2020-03-03 16:42:03 +03:00
Alexander Strizhakov
8efae966b1
open conn in separate task 2020-02-24 19:56:27 +03:00
Alexander Strizhakov
514c899275
adding gun adapter 2020-02-18 08:19:01 +03:00