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Reorganize metrics

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Disable all Phoenix metrics - while useful in theory, I never got any
specific insight from any of them.
This commit is contained in:
Claudio Ortolina
2025-09-20 10:29:31 +03:00
parent 2e071d24b9
commit 254c99c33d
1 changed files with 22 additions and 72 deletions
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lib/music_library_web/telemetry.ex
+22 -72
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@@ -23,76 +23,27 @@ defmodule MusicLibraryWeb.Telemetry do
def metrics do
[
# Phoenix Metrics
summary("phoenix.endpoint.stop.duration",
unit: {:native, :millisecond}
),
summary("phoenix.router_dispatch.stop.duration",
tags: [:route],
unit: {:native, :millisecond}
),
summary("phoenix.socket_connected.duration",
unit: {:native, :millisecond}
),
summary("phoenix.channel_joined.duration",
unit: {:native, :millisecond}
),
summary("phoenix.channel_handled_in.duration",
tags: [:event],
unit: {:native, :millisecond}
),
# LiveView Metrics
summary("phoenix.live_view.mount.stop.duration",
unit: {:native, :millisecond},
tags: [:view]
),
summary("phoenix.live_view.handle_params.stop.duration",
unit: {:native, :millisecond},
tags: [:view]
),
summary("phoenix.live_view.handle_event.stop.duration",
unit: {:native, :millisecond},
tags: [:view, :event]
),
summary("phoenix.live_view.render.stop.duration",
unit: {:native, :millisecond},
tags: [:view]
),
# LiveComponent Metrics
summary("phoenix.live_component.update.stop.duration",
unit: {:native, :millisecond},
tags: [:component],
drop: &drop_live_dashboard_events/1
),
summary("phoenix.live_component.handle_event.stop.duration",
unit: {:native, :millisecond},
tags: [:component, :event],
drop: &drop_live_dashboard_events/1
),
# Database Metrics
summary("music_library.repo.query.total_time",
unit: {:native, :millisecond},
description: "The sum of the other measurements"
),
summary("music_library.repo.query.decode_time",
unit: {:native, :millisecond},
description: "The time spent decoding the data received from the database"
description: "The sum of the other measurements",
reporter_options: [
nav: "Repo"
]
),
summary("music_library.repo.query.query_time",
unit: {:native, :millisecond},
description: "The time spent executing the query"
description: "The time spent executing the query",
reporter_options: [
nav: "Repo"
]
),
summary("music_library.repo.query.queue_time",
unit: {:native, :millisecond},
description: "The time spent waiting for a database connection"
),
summary("music_library.repo.query.idle_time",
unit: {:native, :millisecond},
description:
"The time the connection spent waiting before being checked out for the query"
description: "The time spent waiting for a database connection",
reporter_options: [
nav: "Repo"
]
),
# HTTP Metrics
@@ -102,7 +53,7 @@ defmodule MusicLibraryWeb.Telemetry do
tag_values: &add_tags/1,
drop: &drop_archive_requests/1,
reporter_options: [
nav: "HTTP"
nav: "External APIs"
]
),
summary("finch.request.stop.duration",
@@ -111,13 +62,19 @@ defmodule MusicLibraryWeb.Telemetry do
tag_values: &add_tags/1,
drop: &drop_archive_requests/1,
reporter_options: [
nav: "HTTP"
nav: "External APIs"
]
),
# Assets
summary("music_library.assets.cache_size", unit: {:byte, :kilobyte}),
summary("music_library.assets.content_size", unit: {:byte, :megabyte}),
summary("music_library.assets.cache_size",
unit: {:byte, :kilobyte},
reporter_options: [nav: "Assets"]
),
summary("music_library.assets.content_size",
unit: {:byte, :megabyte},
reporter_options: [nav: "Assets"]
),
# VM Metrics
summary("vm.memory.total", unit: {:byte, :megabyte}),
@@ -149,11 +106,4 @@ defmodule MusicLibraryWeb.Telemetry do
defp drop_archive_requests(metadata) do
metadata.request.host =~ "archive.org"
end
defp drop_live_dashboard_events(metadata) do
case Module.split(metadata.component) do
["Phoenix" | _rest] -> true
_ -> false
end
end
end