#Redis

API Rate Limits Explained: Token Bucket, Leaky Bucket, and Fixed Window (2026)

Caching Explained: The Sticky Notes on Your Monitor & Cache Invalidation (2026)

Building a Spam/Fraud Detection System From Rules to ML in 2026

A comprehensive engineering guide to scaling fraud and abuse prevention. We analyze deterministic velocity heuristics, Redis sliding-window leaky buckets, real-time feature stores, XGBoost risk scoring models, and hybrid decision engines processing 100,000 requests per second.

Caching Strategy: Cache-Aside vs Write-Through in a Real API

Compare database caching patterns: Cache-Aside (Lazy Loading) vs Write-Through vs Write-Behind in Node.js and Redis.

FastAPI BackgroundTasks vs Celery for Sending Email: Which One to Use?

A real engineering comparison of FastAPI BackgroundTasks vs Celery for sending email in 2026 — covering reliability, retries, failure handling, and when each fits.

Building a Rate Limiter That Survives a Traffic Spike: From Token Bucket to Distributed GCRA

Conquer microservice overload and DDoS surges. Learn how to architect a production-ready, distributed rate limiter using the Generic Cell Rate Algorithm (GCRA) and atomic Redis Lua scripts.

Designing a Task Queue for AI Agents Working on the Same Codebase

Parallel agent coordination. How to design Git worktree isolation, file-level mutex locks, AST dependency DAG scheduling, and Redis queues for multi-agent teams.

Idempotent Background Jobs: Handling Retries Without Duplicates

The distributed background job reliability architecture. How Idempotency Keys, Redis SETNX locks, and atomic database transactions prevent duplicate payment processing.

Multi-Tenant Rate Limiting: Fair Usage Without Starving Anyone

The SaaS API fairness blueprint. Token bucket vs sliding window per-tenant isolation, Redis Lua scripts for atomic decrement, and burst headroom allocation.

FastAPI Rate Limiting and Cost Controls for LLM-Backed Endpoints

Traffic-shaped rate limiting isn't enough when every request has a dollar cost attached. A layered approach: request limits, token-aware budgets, and hard circuit breakers.

Building Real-Time Multiplayer Games with WebSockets and Redis

Discover the architecture behind massively multiplayer browser games. Learn how to combine Node.js, WebSockets, and Redis Pub/Sub for high-throughput, low-latency synchronisation.

Building a Multi-Tenant Go APNs Notification Gateway: Handling 50k Push Messages/Sec with HTTP/2 and Redis

Learn how to construct a highly performant, multi-tenant Apple Push Notification service (APNs) gateway in Go. Architect a system that processes 50,000 requests per second using HTTP/2, JWT token auth, and Redis queues.