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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.
This commit is contained in:
rinpatch 2020-06-23 15:38:45 +03:00
parent 7882f28569
commit 007843b75e
3 changed files with 53 additions and 137 deletions
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158
config/description.exs
View File

@ -3161,36 +3161,37 @@
description: "Advanced settings for `gun` connections pool",
children: [
%{
key: :checkin_timeout,
key: :connection_acquisition_wait,
type: :integer,
description: "Timeout to checkin connection from pool. Default: 250ms.",
description:
"Timeout to acquire a connection from pool.The total max time is this value multiplied by the number of retries. Default: 250ms.",
suggestions: [250]
},
%{
key: :connection_acquisition_retries,
type: :integer,
description:
"Number of attempts to acquire the connection from the pool if it is overloaded. Default: 5",
suggestions: [5]
},
%{
key: :max_connections,
type: :integer,
description: "Maximum number of connections in the pool. Default: 250 connections.",
suggestions: [250]
},
%{
key: :retry,
type: :integer,
description:
"Number of retries, while `gun` will try to reconnect if connection goes down. Default: 1.",
suggestions: [1]
},
%{
key: :retry_timeout,
type: :integer,
description:
"Time between retries when `gun` will try to reconnect in milliseconds. Default: 1000ms.",
suggestions: [1000]
},
%{
key: :await_up_timeout,
type: :integer,
description: "Timeout while `gun` will wait until connection is up. Default: 5000ms.",
suggestions: [5000]
},
%{
key: :reclaim_multiplier,
type: :integer,
description:
"Multiplier for the number of idle connection to be reclaimed if the pool is full. For example if the pool maxes out at 250 connections and this setting is set to 0.3, the pool will reclaim at most 75 idle connections if it's overloaded. Default: 0.1",
suggestions: [0.1]
}
]
},
@ -3199,108 +3200,29 @@
key: :pools,
type: :group,
description: "Advanced settings for `gun` workers pools",
children: [
%{
key: :federation,
type: :keyword,
description: "Settings for federation pool.",
children: [
%{
key: :size,
type: :integer,
description: "Number workers in the pool.",
suggestions: [50]
},
%{
key: :max_overflow,
type: :integer,
description: "Number of additional workers if pool is under load.",
suggestions: [10]
},
%{
key: :timeout,
type: :integer,
description: "Timeout while `gun` will wait for response.",
suggestions: [150_000]
}
]
},
%{
key: :media,
type: :keyword,
description: "Settings for media pool.",
children: [
%{
key: :size,
type: :integer,
description: "Number workers in the pool.",
suggestions: [50]
},
%{
key: :max_overflow,
type: :integer,
description: "Number of additional workers if pool is under load.",
suggestions: [10]
},
%{
key: :timeout,
type: :integer,
description: "Timeout while `gun` will wait for response.",
suggestions: [150_000]
}
]
},
%{
key: :upload,
type: :keyword,
description: "Settings for upload pool.",
children: [
%{
key: :size,
type: :integer,
description: "Number workers in the pool.",
suggestions: [25]
},
%{
key: :max_overflow,
type: :integer,
description: "Number of additional workers if pool is under load.",
suggestions: [5]
},
%{
key: :timeout,
type: :integer,
description: "Timeout while `gun` will wait for response.",
suggestions: [300_000]
}
]
},
%{
key: :default,
type: :keyword,
description: "Settings for default pool.",
children: [
%{
key: :size,
type: :integer,
description: "Number workers in the pool.",
suggestions: [10]
},
%{
key: :max_overflow,
type: :integer,
description: "Number of additional workers if pool is under load.",
suggestions: [2]
},
%{
key: :timeout,
type: :integer,
description: "Timeout while `gun` will wait for response.",
suggestions: [10_000]
}
]
}
]
children:
Enum.map([:federation, :media, :upload, :default], fn pool_name ->
%{
key: pool_name,
type: :keyword,
description: "Settings for #{pool_name} pool.",
children: [
%{
key: :size,
type: :integer,
description: "Maximum number of concurrent requests in the pool.",
suggestions: [50]
},
%{
key: :max_waiting,
type: :integer,
description:
"Maximum number of requests waiting for other requests to finish. After this number is reached, the pool will start returning errrors when a new request is made",
suggestions: [10]
}
]
}
end)
},
%{
group: :pleroma,

30
docs/configuration/cheatsheet.md
View File

@ -448,36 +448,32 @@ For each pool, the options are:
*For `gun` adapter*
Advanced settings for connections pool. Pool with opened connections. These connections can be reused in worker pools.
Settings for HTTP connection pool.
For big instances it's recommended to increase `config :pleroma, :connections_pool, max_connections: 500` up to 500-1000.
It will increase memory usage, but federation would work faster.
* `:checkin_timeout` - timeout to checkin connection from pool. Default: 250ms.
* `:max_connections` - maximum number of connections in the pool. Default: 250 connections.
* `:retry` - number of retries, while `gun` will try to reconnect if connection goes down. Default: 1.
* `:retry_timeout` - time between retries when `gun` will try to reconnect in milliseconds. Default: 1000ms.
* `:await_up_timeout` - timeout while `gun` will wait until connection is up. Default: 5000ms.
* `:connection_acquisition_wait` - Timeout to acquire a connection from pool.The total max time is this value multiplied by the number of retries.
* `connection_acquisition_retries` - Number of attempts to acquire the connection from the pool if it is overloaded. Each attempt is timed `:connection_acquisition_wait` apart.
* `:max_connections` - Maximum number of connections in the pool.
* `:await_up_timeout` - Timeout to connect to the host.
* `:reclaim_multiplier` - Multiplied by `:max_connections` this will be the maximum number of idle connections that will be reclaimed in case the pool is overloaded.
### :pools
*For `gun` adapter*
Advanced settings for workers pools.
Settings for request pools. These pools are limited on top of `:connections_pool`.
There are four pools used:
* `:federation` for the federation jobs.
You may want this pool max_connections to be at least equal to the number of federator jobs + retry queue jobs.
* `:media` for rich media, media proxy
* `:upload` for uploaded media (if using a remote uploader and `proxy_remote: true`)
* `:default` for other requests
* `:federation` for the federation jobs. You may want this pool's max_connections to be at least equal to the number of federator jobs + retry queue jobs.
* `:media` - for rich media, media proxy.
* `:upload` - for proxying media when a remote uploader is used and `proxy_remote: true`.
* `:default` - for other requests.
For each pool, the options are:
* `:size` - how much workers the pool can hold
* `:size` - limit to how much requests can be concurrently executed.
* `:timeout` - timeout while `gun` will wait for response
* `:max_overflow` - additional workers if pool is under load
* `:max_waiting` - limit to how much requests can be waiting for others to finish, after this is reached, subsequent requests will be dropped.
## Captcha

2
lib/pleroma/gun/conn.ex
View File

@ -13,8 +13,6 @@ def open(%URI{} = uri, opts) do
opts =
opts
|> Enum.into(%{})
|> Map.put_new(:retry, pool_opts[:retry] || 1)
|> Map.put_new(:retry_timeout, pool_opts[:retry_timeout] || 1000)
|> Map.put_new(:await_up_timeout, pool_opts[:await_up_timeout] || 5_000)
|> Map.put_new(:supervise, false)
|> maybe_add_tls_opts(uri)