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RGate

A configurable HTTP API Gateway for applications running on Docker containers. Detailed architecture can be found in api_gateway_docker.pdf.

Features

  • Configurable routes and backends
  • Graceful Shutdown
  • Accurate traffic stats

Rationale behind decisions

  • Chose Golang as programming language because of:
    • Docker SDK
    • Simple routing and middleware usage
    • Reverse Proxy Utility
  • Encapsulation is done at package level to avoid mutations

Assumptions

  • For multiple backends, any container is randomly chosen at runtime (instead of load time)
  • HTTP Method isn't taken into consideration for routing
  • Mutex is used to avoid race conditions when measuring stats
  • HTTP Connections to backend aren't pooled/reused
  • No health-check is performed when choosing a backend

Development

Instalment

make install

Running

rgate --port 8080 --config config.yml

Unit Tests

make test

Linting

make lint

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An API Gateway for Docker Containers

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