📰 Dev.to · Young Gao

Your app crashes under load because you're opening a new database connection per request. Learn connection pooling with PgBouncer, pool sizing, and leak detecti

Your logs say the request succeeded but users say it didn't. Learn to instrument Go microservices with OpenTelemetry for production-grade distributed tracing ac

When a downstream service fails, your entire system cascades. Implement the circuit breaker pattern in TypeScript with half-open state, failure thresholds, and

console.log in production is like debugging blindfolded. Learn structured logging with Pino, correlation IDs, log levels, and ELK stack integration for Node.js

Master graceful shutdown patterns in Go: signal handling, HTTP/gRPC server shutdown, worker draining, and Kubernetes integration.

Microservices need to communicate without coupling. Build a type-safe event bus in TypeScript with typed channels, middleware hooks, and dead letter handling.

Build a multi-layer cache in Go with LRU eviction, TTL expiration, cache stampede protection, and Redis fallback. Benchmarked patterns for high-throughput servi

A user clicks Buy twice. Two charges appear. Learn why every POST endpoint needs idempotency and how to implement it with idempotency keys, database constraints

10 PostgreSQL query anti-patterns I've seen in production code. Each fix can yield 10x-100x speedups. Covers N+1 queries, missing indexes, and implicit type cas

Build, test, and publish a CLI tool to crates.io from zero Rust knowledge. Covers argument parsing with clap, error handling, testing, and cross-platform distri

Zero-downtime deployments aren't magic. Learn rolling updates, blue-green, and canary deployment strategies on Kubernetes with practical YAML configs and health

Every API needs rate limiting but most implementations break under load. Build a production rate limiter in Go with sliding windows, atomic operations, and Redi

WebSockets are overkill for most real-time features. Learn Server-Sent Events for live dashboards, notifications, and streaming — simpler, lighter, and HTTP-nat

Go error handling doesn't have to be painful. Learn sentinel errors, error wrapping, custom types, and the errors.Is/As patterns that make debugging production

Unit tests pass but production breaks. Learn integration testing, contract testing, snapshot testing, and test architecture patterns that actually catch bugs.

Your Go Docker image is 1GB. After multi-stage builds, it's 12MB. Learn distroless base images, build caching, and security scanning for production Go container

Every REST API needs input validation and documentation. Most teams treat these as separate concerns...

Modern APIs need rate limiting, authentication, caching, and observability — but running a dedicated...

Every week there's a new "autonomous AI agent" framework on GitHub with 10k stars and a demo that...

Every developer has that moment: you write a quick script to check whether your APIs are alive, and...