API Engineering path

API Engineering Fundamentals What Is an API?Why API Engineering?API Types API Lifecycle API First Design Consumer Driven Design Resource Vs Service Modeling HTTP Fundamentals Request Response Lifecycle Idempotency API Maturity Model REST Vs RPC Vs Graph QL Vs G RPC Production API Checklist Common Design Mistakes Interview Questions

REST API Design REST Principles Resource Modeling URI Design HTTP Methods HTTP Status Codes Request Headers Response Headers Pagination Filtering Sorting Searching Error Handling Problem Details RFC7807 Bulk Operations File Upload Idempotency HATEOAS REST Anti Patterns Banking Example Interview

OpenAPI and API Contracts Introduction Open API Specification YAML Basics Paths Schemas Components Examples Security Schemes Code Generation Swagger UI Spring Doc Versioning Mocking Contract Testing Best Practices

AsyncAPI and Event Contracts Introduction Event Driven Architecture Kafka Rabbit MQ Topics Channels Messages Schemas Code Generation Documentation Versioning Testing Production Banking Example Best Practices

GraphQL API Engineering Introduction Schema Queries Mutations Subscriptions Resolvers N+1 Problem Data Loader Security Pagination Caching Federation Gateway Spring Boot Production

gRPC API Engineering Introduction Protobuf Service Definition Unary Calls Streaming Deadlines Retries Load Balancing Security Interceptors Spring Boot G RPCGateway Observability Best Practices Interview

SOAP and Enterprise APIs Introduction WSDL XSD SOAPEnvelope Headers Faults WS Security JAXWS Spring WS Legacy Integration Banking Performance Migration Best Practices Interview

API Gateway and Edge Architecture Introduction Why Gateway Routing Authentication Authorization Rate Limiting Caching Circuit Breaker Load Balancing Service Discovery Observability Kong Apigee Spring Cloud Gateway Production

API Security OWASPAPI Authentication Authorization OAuth2 OIDC JWT M TLS Rate Limiting Secrets CORS CSRF Input Validation APIKeys Security Headers Best Practices

API Versioning and Compatibility Versioning Strategies URI Headers Media Type Backward Compatibility Deprecation Migration Consumer Management Open API Graph QL G RPC Testing Production Examples Best Practices

API Testing Unit Testing Integration Testing Contract Testing Consumer Driven Testing Mock Servers Postman Newman REST Assured Wire Mock Performance Testing Security Testing Chaos Testing End To End CICD Best Practices

API Performance and Scalability Latency Throughput Caching Compression Connection Pooling Async Processing Rate Limiting Scaling Load Balancing CDN Database Optimization Kafka Performance Testing Tuning Best Practices

API Monitoring and Observability Logging Metrics Tracing Open Telemetry Prometheus Grafana Datadog Splunk Elastic SLO SLI Alerting Dashboards Incident Response Production

API Engineering Best Practices Design Checklist Code Checklist Security Checklist Performance Checklist Documentation Checklist Testing Checklist Deployment Checklist Monitoring Checklist Governance Review Process Architecture Patterns Banking Case Study End To End Project Interview Questions Production Checklist

API Engineering

API Engineering Fundamentals

What Is an API?Why API Engineering?API Types API Lifecycle API First Design Consumer Driven Design Resource Vs Service Modeling HTTP Fundamentals Request Response Lifecycle Idempotency API Maturity Model REST Vs RPC Vs Graph QL Vs G RPC Production API Checklist Common Design Mistakes Interview Questions

REST API Design

REST Principles Resource Modeling URI Design HTTP Methods HTTP Status Codes Request Headers Response Headers Pagination Filtering Sorting Searching Error Handling Problem Details RFC7807 Bulk Operations File Upload Idempotency HATEOAS REST Anti Patterns Banking Example Interview

OpenAPI and API Contracts

Introduction Open API Specification YAML Basics Paths Schemas Components Examples Security Schemes Code Generation Swagger UI Spring Doc Versioning Mocking Contract Testing Best Practices

AsyncAPI and Event Contracts

Introduction Event Driven Architecture Kafka Rabbit MQ Topics Channels Messages Schemas Code Generation Documentation Versioning Testing Production Banking Example Best Practices

GraphQL API Engineering

Introduction Schema Queries Mutations Subscriptions Resolvers N+1 Problem Data Loader Security Pagination Caching Federation Gateway Spring Boot Production

gRPC API Engineering

Introduction Protobuf Service Definition Unary Calls Streaming Deadlines Retries Load Balancing Security Interceptors Spring Boot G RPCGateway Observability Best Practices Interview

SOAP and Enterprise APIs

Introduction WSDL XSD SOAPEnvelope Headers Faults WS Security JAXWS Spring WS Legacy Integration Banking Performance Migration Best Practices Interview

API Gateway and Edge Architecture

Introduction Why Gateway Routing Authentication Authorization Rate Limiting Caching Circuit Breaker Load Balancing Service Discovery Observability Kong Apigee Spring Cloud Gateway Production

API Security

OWASPAPI Authentication Authorization OAuth2 OIDC JWT M TLS Rate Limiting Secrets CORS CSRF Input Validation APIKeys Security Headers Best Practices

API Versioning and Compatibility

Versioning Strategies URI Headers Media Type Backward Compatibility Deprecation Migration Consumer Management Open API Graph QL G RPC Testing Production Examples Best Practices

API Testing

Unit Testing Integration Testing Contract Testing Consumer Driven Testing Mock Servers Postman Newman REST Assured Wire Mock Performance Testing Security Testing Chaos Testing End To End CICD Best Practices

API Performance and Scalability

Latency Throughput Caching Compression Connection Pooling Async Processing Rate Limiting Scaling Load Balancing CDN Database Optimization Kafka Performance Testing Tuning Best Practices

API Monitoring and Observability

Logging Metrics Tracing Open Telemetry Prometheus Grafana Datadog Splunk Elastic SLO SLI Alerting Dashboards Incident Response Production

API Engineering Best Practices

Design Checklist Code Checklist Security Checklist Performance Checklist Documentation Checklist Testing Checklist Deployment Checklist Monitoring Checklist Governance Review Process Architecture Patterns Banking Case Study End To End Project Interview Questions Production Checklist

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What This Article Will Cover

When complete, this guide will include:

Core concept explanation
Practical API design examples
Request, response, and error handling patterns
Security, performance, and operational considerations
Common mistakes and interview notes
Production-ready best practices

Learning Path

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