API

Return teardown closures from test helpers to manage cleanup elegantly. Learn patterns for temp files, mock servers, and t.Cleanup() usage.

Compare middleware stacking with embedded delegation in Go HTTP servers. Learn when to override ServeHTTP for simpler request handling.

Implement single-method interfaces with function types instead of structs. Master http.HandlerFunc patterns for middlewares, mocks, and adapters.

Test HTTP requests in Python with pytest-httpx for full mocking, respx for pattern matching, or VCR.py for recording real responses.

Automatically tag Python logs with request context using middleware and contextvars for distributed tracing in ASGI web applications.

Define service contracts with Protocol Buffers for non-gRPC systems. Generate serializers, maintain self-documented APIs, and ensure cross-language compatibility.

Implement client-side HTTP caching with ETag headers. Learn If-None-Match, 304 Not Modified responses, and weak validation in Go servers.

Discover a simpler alternative to functional options: method chaining with builder-style configuration that's 76x faster and easier to understand.

Compare three Go option patterns: exposed structs, option constructors, and functional options. Learn when to use each for clean APIs.

Use compile-time interface guards to verify type conformity in Go without runtime overhead. Learn the var _ Interface = (*Type)(nil) pattern.

Learn how to programmatically request Google search indexing for multiple URLs using the Indexing API and NodeJS for faster reindexing.

Secure webhooks by verifying payload authenticity using HMAC hash signatures with shared secrets, preventing man-in-the-middle attacks.

Fix Django REST Framework to return JSON error responses for 403, 404, 500 errors using middleware instead of default HTML pages.

Prevent excessive file downloads in Python by streaming with HTTPX and limiting file size with chunk-based validation and memory-safe processing.

Use Python TypedDict to declaratively define API payload structures. Get type safety for nested dictionaries and improve code maintainability.