API Gateway Common HTTP Errors

Some of the common error for API Gateway

• 4xx client error
  • 400: Bad request
  • 403: Access denied
  • 429: Quota exceeded, Throttle
• 5xx Server error
  • 502: Bad Gateway Exception
    • Usually mean incompatible output from Lambda proxy integration
    • Or also out-of-order invocations due to heavy loads
  • 503: Service Unavailable Exception
  • 504: Integration Failure
    • Endpoint Request Timed-out Exception (API Gateway time out after 29 seconds maximum)