API Gateway REST APIs are a core concept in Amazon API Gateway, allowing users to create, publish, and maintain secure REST and WebSocket APIs for their applications. It provides a complete management system for version control, security, access control, caching, logging, and monitoring. API Gatewa…API Gateway REST APIs are a core concept in Amazon API Gateway, allowing users to create, publish, and maintain secure REST and WebSocket APIs for their applications. It provides a complete management system for version control, security, access control, caching, logging, and monitoring. API Gateway directly integrates with other AWS services such as AWS Lambda, allowing the creation of serverless applications. The REST API can be easily customized to provide specific data transformations, validations, and request/response mapping.
Amazon API Gateway REST APIs Guide
What is Amazon API Gateway REST APIs? Amazon API Gateway REST APIs is a service provided by Amazon Web Services that allows developers to create, publish, maintain, monitor, and secure REST APIs at any scale. This feature plays a pivotal role in managing and handling the APIs that approach AWS services, AWS Lambda, or any web applications.
Why is it vital? API Gateway REST APIs is important because it enables developers to easily establish the access and management criteria for their APIs. It takes care of everything, ranging from traffic management, authorization and access control, monitoring to API version management.
How does it work? It works as a front-door, enabling HTTP/HTTPS requests to be routed to several types of back-ends, including workloads running on Amazon Elastic Compute Cloud (EC2), code running on AWS Lambda, etc. It can handle virtually thousands of concurrent API calls, including traffic management, request verification, and request response processing.
Exam Tips: Answering Questions on API Gateway REST APIs 1. Understand the fundamental concepts: Have a clear understanding of how Amazon API Gateway REST APIs work and their importance. 2. Use of different types of back-ends: Be clear on how Amazon API Gateway REST APIs route to multiple types of back-ends. 3. Scale and Performance: Understand that API Gateway REST APIs can manage a high number of concurrent API calls, its traffic management, request verification, and response processing capabilities. 4. Functionality: Remember that it also serves as an intercessor for all kinds of requests from clients to services.
AWS Certified Solutions Architect - API Gateway REST APIs Example Questions
Test your knowledge of API Gateway REST APIs
Question 1
You want to improve the performance of your API Gateway REST API by compressing the payload in responses. What should you do?
Question 2
You are building an Amazon API Gateway REST API that must invoke a web application running on an Amazon EC2 instance in a private subnet with no public IP, accessible only via an internal Network Load Balancer within the VPC. Which integration type should you use so API Gateway can communicate with this backend?
Question 3
You have an API Gateway REST API that processes incoming requests and integrates with an AWS Lambda function. You need to enable caching to reduce the processing time of your requests. What should you do?
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