Microservices API Gateway

Swaminathan Saikumar Swaminathan Saikumar

Swaminathan Saikumar

Software

发布日期: 2020年12月12日
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Benefits: Instead of specific services, clients talk to the API gateway, which provides a client-specific API.

Drawbacks: Needs to be HA & managed. New services & APIs needs updating the gateway.

Off the shelf:

Commercial:

  • AWS API Gateway: Configure each request to a BE service that is an AWS Lambda function, an app http service or AWS service.
  • AWS App load balancer: Basic routing to BE services. 

Open-source product:

  • Kong: nginx http based. Has plugins.
  • Traefix: Go based. Integrate with service registries.

Open-source framework:

  • Netflix Zuul
  • Spring Cloud Gateway

Graph based technologies:

  • Netflix Falcor: A Graph query implementation. Netflix started with Groovy API scripts in a monolithic architecture. Moved to an API modules using NodeJS & Docker, where scripts invoke an API gateway using Netflix Falcor. Falcor does declarative dynamic API composition & can invoke multiple services in a single request.
  • Facebook GraphQL: a standard with clients & servers available in multiple languages, such as NodeJS, Java & Scala.
  • Apollo GraphQL: JS/NodeJS implementation with useful extensions to GraphQL with a server & client.

Source: Microservices Patterns by Chris Richardson

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