Design API Gateway patterns with routing, authentication, rate limiting, and microservices integration
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Common questions about api gateway architecture generator
Single entry point for all client requests, handles cross-cutting concerns like authentication, rate limiting, logging, caching. Shields internal microservices from direct exposure, enables protocol translation, aggregates responses. Visualize clients → gateway (auth, routing, transform) → backend services.
Path-based or header-based routing to backend services. Show /users/* → user service, /orders/* → order service. Include load balancing across service instances, health checks, circuit breakers, and dynamic service discovery integration with tools like Consul or Kubernetes.
Gateway validates JWT tokens or API keys before routing to backends. Diagram shows request → gateway auth plugin → token validation → claims extraction → forward to service with user context. Include OAuth2 flows, integration with identity providers (Auth0, Cognito), and token caching.
Use token bucket or leaky bucket algorithms, track requests per API key/IP in Redis. Show request → rate limit check → allow/reject → backend. Include tiered limits by plan (free/pro/enterprise), burst allowances, and quota management with reset windows.
Apollo Gateway aggregates multiple GraphQL services (subgraphs) into unified schema. Visualize client query → gateway parses → distributes to subgraphs → merges results → returns. Each team owns their subgraph, gateway handles query planning and execution across services.
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