api
Practical resources about api for software engineers.
101 results
Building Robust APIs
APIs are the contract between systems. Whether you are exposing a public REST endpoint, designing an internal GraphQL schema, or integrating with a third-party service, the patterns you choose determine reliability, performance, and developer experience.
Here you will find recipes for handling CORS, implementing pagination, versioning endpoints, managing rate limits, and documenting APIs with OpenAPI. Each example includes runnable code in multiple languages so you can adapt it to your stack immediately.
Store User Sessions in Memcached with Python
Use Memcached as a distributed session store in Python web applications with pymemcache, TTL...
Compose Asynchronous Pipelines with Java CompletableFuture
Build non-blocking async pipelines in Java using CompletableFuture with thenCompose, thenCombine,...
Make Concurrent HTTP Requests with Python and aiohttp
Fetch multiple APIs concurrently using asyncio and aiohttp. Covers connection pooling, rate...
Concurrent Async Tasks with asyncio.gather and Task Groups
Execute multiple async operations concurrently in Python using asyncio.gather, asyncio.TaskGroup,...
asyncio.Semaphore: Limit Concurrent API Calls in Python
Use asyncio.Semaphore in Python to cap concurrent API calls, database queries, and resource access...
Extract Data from HTML Pages with Python and BeautifulSoup
Parse HTML and extract data using BeautifulSoup. Covers CSS selectors, navigation, tables,...
Custom GraphQL Scalar Types for Dates, Emails, and JSON
Define custom GraphQL scalars for Date, Email, URL, and JSON fields with serialization, parsing,...
Batch and Cache Database Queries with GraphQL DataLoader
Use DataLoader to coalesce individual load requests into batched database calls, solving the N+1...
Field-Level Auth with Custom GraphQL Directives
Add field-level authorization to GraphQL with custom schema directives. Check roles, permissions,...
Structured GraphQL Errors with Extension Codes
Implement structured error handling in GraphQL with custom error classes, extension codes, and...
Set Up a GraphQL Federation Gateway with Apollo
Compose multiple GraphQL services into a single federated supergraph using Apollo Federation and a...
Validate and Sanitize GraphQL Input Types Server-Side
Implement centralized input validation in GraphQL using custom validation functions, Zod schemas,...
Mock GraphQL Resolvers for Frontend Development
Set up mocked GraphQL resolvers with Apollo Server so frontend teams can develop against a fake API...
Detect and Fix N+1 Queries in GraphQL Resolvers
Identify N+1 query problems in GraphQL resolvers using logging, DataLoader, and query analysis...
Cursor-based Pagination with GraphQL Relay Connections
Implement Relay-style cursor pagination in GraphQL with edges, nodes, and pageInfo for efficient...
Real-Time Data with GraphQL WebSocket Subscriptions
Implement GraphQL subscriptions over WebSockets with Apollo Server and PubSub for real-time updates...
Prometheus API Monitoring
Monitor API performance and health with Prometheus metrics, custom collectors, and alerting rules.
Schema-Based Data Validation with Zod in TypeScript
Validate and sanitize incoming data using Zod schemas with TypeScript inference, custom...
Configure HTTP Security Headers with Helmet in Node.js
Set security HTTP headers in Express apps with Helmet — CSP, HSTS, X-Frame-Options,...
Build HTTP-Triggered Azure Functions with Python
Create HTTP-triggered Azure Functions in Python with binding configuration, async handlers,...
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