_API GATEWAY [1.8.2]

ARCHIVED

LIGHTWEIGHT REVERSE PROXY AND API GATEWAY WITH RATE LIMITING, JWT AUTHENTICATION, REQUEST ROUTING, AND OBSERVABILITY BUILT FOR MICROSERVICES ARCHITECTURES.

STACK: rust, nginx, prometheus, grafana DATE: 2022.03.05

Overview

A custom API gateway built to replace an aging NGINX configuration with a more programmable and observable solution. Handles authentication, rate limiting, and request routing for a microservices architecture serving 50M+ requests per day.

Technical Details

Built in Rust for zero-overhead performance. Processes requests in under 1ms at the 99th percentile.

Features

JWT and API key authentication
Configurable rate limiting per consumer/endpoint
Request/response transformation
Circuit breaker pattern implementation
Distributed tracing with OpenTelemetry
Real-time metrics dashboard

Configuration

[gateway]
port = 8080
workers = 16

[[routes]]
path = "/api/v1/users"
upstream = "http://user-service:3000"
auth = "jwt"
rate_limit = "100/min"

Status

Archived after migrating to a managed API gateway solution. The Rust performance patterns developed here were documented and shared with the broader team.