API Quick Reference Guide

API Quick Reference Guide.

HTTP Methods:

• GET: Retrieve data from the server
• POST: Send data to create a resource
• PUT: Send data to update a resource
• PATCH: Update a resource partially
• DELETE: Remove a resource
• TRACE: Return full HTTP request for debugging
• OPTIONS: Return supported HTTP methods for URL
• CONNECT: Convert to TCP/IP tunnel for secure communication
• PURGE: Invalidate cached resource
• LOCK: Lock resource for exclusive client use
• UNLOCK: Release previously locked resource
• MKCOL: Create new collection resource
• COPY: Copy resource to destination URI

HTTP Status Codes:

• 1xx: Informational
• 2xx: Success
• 3xx: Redirection
• 4xx: Client Errors
• 5xx: Server Errors

Response Headers:

• Content-Type: MIME type specification
• Content-Length: Response body length in bytes
• Cache-Control: Caching behavior
• Location: Resource URI
• Server: Server software details
• Access-Control-Allow-Origin: Allowed origins
• Set-Cookie: Client cookie specifications
• Expires: Response staleness date/time
• Last-Modified: Resource modification date/time

API Architecture & Design

Architecture Styles:

• REST (Representational State Transfer)
• SOAP (Simple Object Access Protocol)
• GraphQL
• SOA (Service-Oriented Architecture)
• Microservices
• Serverless
• Event-Driven

Design Patterns:

• Adapter Pattern: Interface conversion
• Decorator Pattern: Dynamic behavior addition
• Proxy Pattern: Access control
• Chain of Responsibility: Command delegation
• Observer Pattern: State change notification

Security:

• OAuth: Authorization standard
• JWT (JSON Web Tokens)
• SSL/TLS: Secure connection protocol
• API Keys: Authentication tokens
• Rate Limiting: Request limitation
• OpenID Connect: OAuth authentication layer
• CORS (Cross-Origin Resource Sharing)

Testing Tools:

• Postman: API testing/debugging
• SoapUI: SOAP/REST testing
• Swagger: API design/testing
• JMeter: Performance testing
• TestRail: Test management
• Dredd: Documentation testing
• REST Assured: Java testing library
• Karate DSL: Gherkin syntax testing
• HttpMaster: API debugging
• Assertible: Automated testing

Development Frameworks & Tools

Frameworks:

• Node.js/Express: JavaScript
• Django/Flask: Python
• Spring: Java

Development Tools:

• Swagger Editor: OpenAPI design
• Postman: Testing/debugging
• Insomnia: API design/testing
• Paw: Mac OS API testing
• API Blueprint: Description language

Implementation Platforms:

• Firebase: Google's development platform
• Backendless: No-backend platform
• Parse Server: Open-source backend
• Amazon API Gateway: AWS management
• Azure API Management: Microsoft's solution

Performance Optimization

• Caching: Response storage
• Throttling: Request rate limiting
• Load Balancing: Traffic distribution
• CDN: Content delivery network
• Edge Computing: Distributed computing

Monitoring Solutions

• Pingdom: Uptime/performance
• New Relic: Performance analytics
• Datadog: Cloud monitoring
• Sumo Logic: Log management
• Loggly: Cloud logging

Standards & Specifications

• JSON API: JSON specification
• HAL: Hypermedia standard
• JSON-LD: Linked data format
• OData: Open Data Protocol
• AsyncAPI: Event-driven specification
• RAML: YAML-based description
• OpenAPI: YAML/JSON specification

Infrastructure

• Kubernetes: Container orchestration
• OpenShift: Container platform
• Docker Swarm: Docker clustering
• Consul: Service mesh
• Istio: Traffic management

Deployment Platforms

• Heroku: Cloud platform
• AWS Elastic Beanstalk: AWS deployment
• Azure App Service: Microsoft deployment
• Google App Engine: Google Cloud Platform
• Docker: Containerization
• Serverless Options:
• - AWS Lambda
• - Azure Functions
• • Google Cloud Functions

• Static Platforms:

• Netlify

• Vercel

Best Practices:

• Versioning: API evolution management
• Pagination: Response chunking
• Caching: Performance optimization
• Error Handling: Meaningful responses
• HATEOAS: Hypermedia constraints

Documentation Tools:

• OpenAPI: Specification standard
• API Blueprint: Description language
• RAML: YAML documentation
• Swagger UI: Interactive documentation
• Slate: Static documentation generator

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