Backend
Designing Idempotent APIs: Safely Retrying Failed Requests
Build idempotent API endpoints that retry safely using idempotency keys, database constraints and state machines — payments, orders and webhooks.
·4 min read
Tags
Backend
39 articles · Page 2 of 4
Security
API Defense in Depth: Rate Limits, Validation, Headers
API security layers beyond auth: rate limiting, request validation, output encoding, security headers and audit logging, with TypeScript middleware.
·5 min read
Backend
Connection Pooling for High-Throughput Applications
Configure and tune database connection pools for high-throughput Node.js: pool sizing, health checks, connection lifecycle and what exhausts a pool.
·4 min read
Backend
Building Robust Webhook Delivery Systems
Design webhook delivery that handles retries with exponential backoff, signature verification, idempotency, delivery logging and endpoint health checks.
·4 min read
Backend
Designing Efficient Pagination for Large Datasets
Compare offset, cursor and keyset pagination with practical implementations: performance characteristics, trade-offs and where each one fits your API.
·4 min read
Tutorials
Building a GraphQL Server From Scratch
A step-by-step tutorial for a GraphQL server in TypeScript: schema design, resolvers, dataloaders against N+1, authentication, errors and deployment.
·4 min read
Backend
Scaling WebSocket Connections Across Servers
How to scale WebSocket connections past a single server: sticky sessions, pub/sub fan-out with Redis, connection state and graceful reconnection at scale.
·5 min read
Tutorials
Building a Rate Limiter From Scratch
A step-by-step tutorial for rate limiters using token bucket, sliding window and fixed window — with TypeScript, Redis integration and production patterns.
·4 min read
Backend
Database Transaction Isolation Levels Explained
A practical breakdown of read uncommitted, read committed, repeatable read and serializable: the anomalies each prevents and what they cost you.
·5 min read
Backend
gRPC vs REST: When to Use What
A practical comparison of gRPC and REST for backend services: performance, developer experience, streaming, and the tradeoffs that decide between them.
·4 min read
Backend
Redis Data Structures Beyond Key-Value
Redis data structures beyond strings: sorted sets for leaderboards, streams for event logs, HyperLogLog for cardinality and bitmaps for feature flags.
·4 min read
Security
Cross-Site Request Forgery Protection Strategies
A complete guide to understanding and preventing CSRF attacks: token-based protection, SameSite cookies, double-submit and framework implementations.
·5 min read