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