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Heroku Deploy Markers

Tip: Make sure a working Heroku Logplex Logdrain is setup before continuing with this section.

A deploy marker indicates a change in the deployed version of an application. This can be used to group together occurrences of errors and performance issues within a certain time frame. From when the version was deployed until a newer version was deployed. Deploy markers are also required to enable backtrace links for an app.

We normally recommend using the the APP_REVISION environment variable to set the correct revision for a deploy.

However, when using Heroku with the Heroku Labs: Dyno Metadata enabled it will automatically set the revision config option to the HEROKU_SLUG_COMMIT system environment variable. This will automatically report new deploys when the Heroku app gets deployed.

📖 Also read our guide on how to set up deploy markers.

To enable Dyno metadata run:

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heroku labs:enable runtime-dyno-metadata -a <app name>

While replacing <app name> with your app name. And that's it! Deploys will now automatically be tracked by AppSignal.

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