API Design
Best practices and styles for designing APIs — from REST and GraphQL to gRPC and event-driven async APIs.
Which API style? Use REST for public-facing CRUD APIs with broad client support. Choose GraphQL when clients need flexible queries across complex data graphs. Pick gRPC for high-performance internal microservice communication. Use AsyncAPI for event-driven and streaming architectures.
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API Styles
REST (Representational State Transfer)
The most widely adopted API style — uses HTTP methods, resource-based URLs, and stateless communication for web services.
GraphQL
A query language for APIs that lets clients request exactly the data they need — reduces over-fetching and under-fetching.
gRPC
High-performance RPC framework using Protocol Buffers and HTTP/2 — ideal for microservice-to-microservice communication.
AsyncAPI
Specification for defining asynchronous APIs — covers event-driven architectures, message brokers, and streaming protocols.
Specifications & Tools
OpenAPI (Swagger)
Industry-standard specification for describing RESTful APIs — enables auto-generated docs, client SDKs, and contract testing.
API-First Design
Design the API contract before writing implementation code — promotes better collaboration between frontend and backend teams.
Best Practices
API Versioning Strategies
Approaches for evolving APIs without breaking clients — URL versioning, header versioning, and content negotiation.
API Security (OWASP API Top 10)
The top 10 API security risks — broken authentication, excessive data exposure, injection, and more.
Rate Limiting & Throttling
Protect APIs from abuse and ensure fair usage with rate limiting, throttling, and quota management strategies.