MonkeyTips

Những mẹo lập trình ngắn gọn, đã kiểm chứng — kèm code chạy được, sơ đồ và thử thách.
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Laravel Trung bình

Idempotency Keys: Preventing Duplicate Payments in Distributed Systems

Why idempotency keys matter in payment APIs, how to implement them safely with a database-backed store, and common pitfalls like race conditions and key collisions.

PHP 8.4

Sơ đồ

4 phút đọc · 33 Đọc tip

Database Khó

Database Deadlocks: Detection, Diagnosis, and Prevention

How relational databases detect deadlocks with wait-for graphs, why they happen, and concrete techniques to prevent them in high-concurrency systems.

Postgresql 13+

Sơ đồ

5 phút đọc · 107 Đọc tip

Database Khó

Distributed Locking with Redis: Understanding the Redlock Algorithm

A deep dive into the Redlock algorithm for safe distributed locking across multiple Redis nodes, including failure modes, clock drift, and the fencing token fix.

Redis 7.x

Sơ đồ

6 phút đọc · 243 Đọc tip

DevOps Trung bình

Git Interactive Rebase: Clean Up Your Commit History Before a PR

Learn how to use git rebase -i to squash, reorder, and edit commits so your pull requests tell a clean, reviewable story.

Git 2.40+

Sơ đồ

4 phút đọc · 275 Đọc tip

Database Trung bình

Redis Caching Strategies: Cache-Aside vs Write-Through

Compare cache-aside and write-through caching with Redis, including consistency trade-offs, TTL strategy, and when to use each pattern.

Redis 7.x

Sơ đồ

4 phút đọc · 219 Đọc tip

JavaScript Trung bình

TypeScript Utility Types: Pick, Omit, and Partial Explained

Stop duplicating interfaces for every slightly-different shape. Pick, Omit, and Partial let you derive new types from one source of truth — here's when to reach for each.

TypeScript 5.x

Sơ đồ

3 phút đọc · 235 Đọc tip

Bảo Mật Trung bình

Rate Limiting APIs: Token Bucket vs Sliding Window

Fixed windows let clients burst 2x at the boundary. See how token bucket and sliding window rate limiting actually work, with Redis-backed implementations and the pitfalls that break them in production.

Redis 6.x+ Node 18.x+

Sơ đồ

2 phút đọc · 235 Đọc tip

Next.js Trung bình

Next.js App Router: Server Components vs Client Components

Server Components run only on the server; Client Components hydrate in the browser. See how Next.js App Router renders both, and when to actually reach for 'use client'.

Next 14.x - 15.x React 18.x - 19.x

Sơ đồ

3 phút đọc · 1,096 Đọc tip

JavaScript Trung bình