12.1 Factor Apps: Logs

Three additions to the original 12 factor app logs factor

The 12 factor app states that applications should log to standard out and standard error, thus not concerting themselves with the storage and processing of their log stream. That's a good start point, but we need more than that. The 12.1 factor app does these three things:

  1. Supports a LOG_LEVEL configuration option
  2. Uses a machine readable format, such as JSON, in production
  3. Treats log streams as a telemetry source

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2020 Adam Hawkins