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Merged
thecristen merged 1 commit into from
Jul 6, 2026
Merged

feat(dev): Add flamegraphs to live dashboard in non-prod #3313

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4 changes: 4 additions & 0 deletions README.md
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Expand Up @@ -162,6 +162,10 @@ npm install --ignore-scripts
npx pm2-runtime ./integration/monitor/ecosystem.config.js
```

## Flame On

When running locally, navigate to the [Flame On pane in the dashboard](http://localhost:4001/dashboard/flame_on), click `Flame On`, and then do whatever action you're trying to profile (load a page, perform an action, invoke a function). This will generate a flamegraph that you examine to profile specific functions or page loads. See the [`flame_on` docs](https://github.com/DockYard/flame_on) for more information.

## Additional Resources

New to the team, or looking for further developer resources?
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11 changes: 9 additions & 2 deletions lib/dotcom_web/router.ex
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Expand Up @@ -317,8 +317,15 @@ defmodule DotcomWeb.Router do
scope "/", DotcomWeb do
import Phoenix.LiveDashboard.Router

pipe_through([:browser, :browser_live, :basic_auth_readonly])
live_dashboard("/dashboard")
pipe_through([:browser, :browser_live])

live_dashboard("/dashboard",
allow_destructive_actions: true,
csp_nonce_assign_key: :csp_nonce,
additional_pages: [
flame_on: FlameOn.DashboardPage
]
)
end
end

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1 change: 1 addition & 0 deletions mix.exs
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Expand Up @@ -115,6 +115,7 @@ defmodule DotCom.Mixfile do
{:excoveralls, "0.18.5", only: :test},
{:faker, "0.19.0-alpha.1"},
{:floki, "0.38.0"},
{:flame_on, "~> 1.0", only: [:dev]},
{:gen_stage, "1.3.2"},
{:gettext, "1.0.2", override: true},
{:hammer, "7.2.0"},
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2 changes: 2 additions & 0 deletions mix.lock
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Expand Up @@ -38,6 +38,7 @@
"elixir_make": {:hex, :elixir_make, "0.9.0", "6484b3cd8c0cee58f09f05ecaf1a140a8c97670671a6a0e7ab4dc326c3109726", [:mix], [], "hexpm", "db23d4fd8b757462ad02f8aa73431a426fe6671c80b200d9710caf3d1dd0ffdb"},
"erlex": {:hex, :erlex, "0.2.8", "cd8116f20f3c0afe376d1e8d1f0ae2452337729f68be016ea544a72f767d9c12", [:mix], [], "hexpm", "9d66ff9fedf69e49dc3fd12831e12a8a37b76f8651dd21cd45fcf5561a8a7590"},
"esbuild": {:hex, :esbuild, "0.10.0", "b0aa3388a1c23e727c5a3e7427c932d89ee791746b0081bbe56103e9ef3d291f", [:mix], [{:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "468489cda427b974a7cc9f03ace55368a83e1a7be12fba7e30969af78e5f8c70"},
"ets": {:hex, :ets, "0.9.0", "79c6a6c205436780486f72d84230c6cba2f8a9920456750ddd1e47389107d5fd", [:mix], [], "hexpm", "2861fdfb04bcaeff370f1a5904eec864f0a56dcfebe5921ea9aadf2a481c822b"},
"ex_cldr": {:hex, :ex_cldr, "2.47.1", "2dd2f0da2d5720bf413e0320cfd0ea7f0259a888c33e727c5f0db6bab3380252", [:mix], [{:cldr_utils, "~> 2.28", [hex: :cldr_utils, repo: "hexpm", optional: false]}, {:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:gettext, "~> 0.19 or ~> 1.0", [hex: :gettext, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: true]}], "hexpm", "2555d6599d16311a096d8cb2d02e9dc3011ca02abbae446817d4f445a286c758"},
"ex_cldr_calendars": {:hex, :ex_cldr_calendars, "2.4.2", "31d5d7a65add622dc4bf16fc1bfe5ef378d71cfdaf02fb33c7d0742c585f6117", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:ex_cldr_lists, "~> 2.10", [hex: :ex_cldr_lists, repo: "hexpm", optional: true]}, {:ex_cldr_numbers, "~> 2.36", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:ex_cldr_units, "~> 3.20", [hex: :ex_cldr_units, repo: "hexpm", optional: true]}, {:ex_doc, "~> 0.21", [hex: :ex_doc, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "ab69fd04bc1ae18baf9d2e57335d4754c5ac263076ea397eb112621702251fe5"},
"ex_cldr_currencies": {:hex, :ex_cldr_currencies, "2.17.0", "c38d76339dbee413f7dd1aba4cdf05758bd4c0bbfe9c3b1c8602f96082c2890a", [:mix], [{:ex_cldr, "~> 2.38", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "9af59bd29407dcca59fa39ded8c1649ae1cf6ec29fd0611576dcad0279bce0db"},
Expand All @@ -54,6 +55,7 @@
"file_system": {:hex, :file_system, "1.1.1", "31864f4685b0148f25bd3fbef2b1228457c0c89024ad67f7a81a3ffbc0bbad3a", [:mix], [], "hexpm", "7a15ff97dfe526aeefb090a7a9d3d03aa907e100e262a0f8f7746b78f8f87a5d"},
"finch": {:hex, :finch, "0.21.0", "b1c3b2d48af02d0c66d2a9ebfb5622be5c5ecd62937cf79a88a7f98d48a8290c", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.6.2 or ~> 1.7", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4 or ~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 1.1", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "87dc6e169794cb2570f75841a19da99cfde834249568f2a5b121b809588a4377"},
"fine": {:hex, :fine, "0.1.4", "b19a89c1476c7c57afb5f9314aed5960b5bc95d5277de4cb5ee8e1d1616ce379", [:mix], [], "hexpm", "be3324cc454a42d80951cf6023b9954e9ff27c6daa255483b3e8d608670303f5"},
"flame_on": {:hex, :flame_on, "1.0.0", "44d3cd65d1c0e372ce0ea01eeb859d69ee2afc66b967f1f9855c5252604070ea", [:mix], [{:ecto, "~> 3.7", [hex: :ecto, repo: "hexpm", optional: false]}, {:ets, "~> 0.9.0", [hex: :ets, repo: "hexpm", optional: false]}, {:gettext, "~> 0.21 or ~> 1.0", [hex: :gettext, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:meck, "~> 0.9.2", [hex: :meck, repo: "hexpm", optional: false]}, {:phoenix_ecto, "~> 4.7.0", [hex: :phoenix_ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:phoenix_html_helpers, "~> 1.0.1", [hex: :phoenix_html_helpers, repo: "hexpm", optional: false]}, {:phoenix_live_dashboard, "~> 0.8.3", [hex: :phoenix_live_dashboard, repo: "hexpm", optional: false]}, {:phoenix_live_view, "~> 1.0", [hex: :phoenix_live_view, repo: "hexpm", optional: false]}], "hexpm", "5dc774d45e37292336944ba8fb2da2313f32cc3789cb32c055bc968efad6ce24"},
"floki": {:hex, :floki, "0.38.0", "62b642386fa3f2f90713f6e231da0fa3256e41ef1089f83b6ceac7a3fd3abf33", [:mix], [], "hexpm", "a5943ee91e93fb2d635b612caf5508e36d37548e84928463ef9dd986f0d1abd9"},
"fss": {:hex, :fss, "0.1.1", "9db2344dbbb5d555ce442ac7c2f82dd975b605b50d169314a20f08ed21e08642", [:mix], [], "hexpm", "78ad5955c7919c3764065b21144913df7515d52e228c09427a004afe9c1a16b0"},
"gen_stage": {:hex, :gen_stage, "1.3.2", "7c77e5d1e97de2c6c2f78f306f463bca64bf2f4c3cdd606affc0100b89743b7b", [:mix], [], "hexpm", "0ffae547fa777b3ed889a6b9e1e64566217413d018cabd825f786e843ffe63e7"},
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