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Monitoring with Jaeger

Application performance metrics​

Observability is key to understanding a system's behavior. Saleor uses the OpenTracing protocol to report information about its behavior.

What is being traced:

  • HTTP requests including their duration, full URL, request method, client's IP address, and length of response.
  • GraphQL queries including their duration, query string, and execution errors.
  • GraphQL resolvers including their duration, field name, parent type, and execution errors.
  • Database queries including their duration and the SQL statement.

Jaeger​

Jaeger is an open-source, end-to-end distributed tracing tool.

If you're using Docker Compose for local development, there is already a Jaeger instance running on your local system. To use Jaeger in your production environment (which we highly recommend), use the following environment variables:

JAEGER_AGENT_HOST​

The hostname the Jaeger agent is listening on.

JAEGER_AGENT_PORT​

The port the Jaeger agent is listening on. Defaults to 6831.

JAEGER_LOGGING​

A boolean flag indicating whether you want to see verbose logs of the agent's communication. Defaults to False.