Partial Failure, Ordering, and Eventual Consistency
Understand partial API failures, message ordering, and eventual consistency, then design status models and recovery paths clients can reason about.
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Rate Limits, Quotas, and Consumer Fairness
Set fair API rate limits and quotas with clear scopes, useful headers, burst handling, and protection against noisy consumers and accidental traffic spikes.
API Request, Response, and Error Shapes Clients Can Trust
Design consistent API request and response envelopes, validation errors, and problem details so client developers can handle success and failure reliably.
API Resource Names, Relationships, and Collections
Model API URLs around stable resources and relationships, with clear collection behavior that clients can navigate without learning server internals.
Retries, Timeouts, Backoff, and Circuit Breakers
Set API deadlines, bounded retries, exponential backoff, and circuit breakers so transient failures recover without multiplying load or hiding outages.
API Scopes, Roles, and Object-Level Permissions
Compare API scopes, roles, and object-level permissions, then combine them to grant callers only the access each operation and resource requires.
Unit, Integration, and Contract Testing for APIs
Build an API test strategy with fast unit tests, realistic integration checks, and consumer contract tests without relying on brittle end-to-end suites.
Choosing RPC, gRPC, or Event APIs for Service Integration
Compare REST-style RPC, gRPC, and event APIs by interaction pattern, latency, coupling, tooling, and operational needs before choosing an integration style.
JSON, Content Types, and API Serialization Explained
Learn how JSON representations, media types, and serialization rules shape API compatibility, validation, and reliable client-server data exchange.
HTTP Methods, Status Codes, and Headers in API Design
Choose HTTP methods that match the operation, return status codes clients can act on, and use headers for metadata, caching, and safe retries.