Application Services, Event-Driven & Serverless

Question 1

API Gateway errors

Answer 1

4xx - Client Error - Invalid request on client side
5xx - Server Error - Valid request, backend issue
400 - Bad request - Generic
403 - Access Denied - Authorizer denies.. .WAF Filtered
429 - API Gateway can throttle
502 - Bad Gateway Exceptions
503 - Service Unavailabe
504 - Integration Failure/Timeout 29s limit

Question 2

3 Phases of API Gateway

Answer 2

Request
Integrations
Responce

Question 3

Stages of API Gateway

Answer 3

Lambda can be assigned with version for deployment stages

Question 4

API GW Endpoint Types

Answer 4

Edge-Optimized
Regional
Private