How to Add Correlation or Trace IDs to JSON Logs in Go Using Slog?

Adding Correlation ID or Trace ID to JSON Logs in Go Using Slog

When logging JSON messages in Go using the slog package, you may need to include a correlation ID or trace ID to track requests and associated logs more effectively.

To achieve this, you can leverage the context package to store the trace ID and create a new logger that includes it:

traceId := ctx.Value("traceId")
newLogger := logger.With("traceId", traceId)
// Use newLogger for logging; it will add the traceId to all messages

By utilizing this approach, you can easily add a trace ID to your JSON logs in slog to enhance request tracking and log analysis capabilities.

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