Overview

Context values can carry trace IDs, auth claims, and request-scoped state.

Example

reqID, _ := c.Get("request_id")
return c.JSON(200, map[string]any{"requestId": reqID})

Best Practices

• Use typed keys for shared context values.
• Pass cancellation context to DB and queue calls.

Common Pitfalls

• Storing large objects in request context.
• Ignoring context cancellation in long operations.