Backend
Request Coalescing: Stopping the Thundering Herd
When a cache entry expires under load, dozens of requests race to rebuild it — inflight deduplication collapses that stampede into one upstream call.
·4 min read
Tags
Concurrency
7 articles
Backend
Distributed Locks: Coordinating Work Across Multiple Nodes
Stop racing conditions in distributed systems: a practical guide to implementing distributed locks with Redis and PostgreSQL advisory locks in Node.js.
·5 min read
Backend
Async Concurrency in Node.js: Semaphores and Backpressure
Unbounded Promise.all is a silent OOM killer — here's how to build semaphores, throttled queues, and stream backpressure into your Node.js applications.
·4 min read
Backend
Worker Threads in Node.js: Offloading CPU-Bound Work
Learn how to use Node.js worker threads to handle CPU-intensive tasks without blocking the event loop, with thread pooling and type-safe messaging patterns.
·5 min read
Tutorials
Building a Task Queue From Scratch With Node.js and Redis
Build a production-ready task queue step by step using Node.js and Redis, covering reliable delivery, retries, dead letter queues, and concurrency control.
·5 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
Architecture
Understanding Concurrency Models: Threads, Async, and Actors
A comparison of threading, async/await, and actor-based concurrency models — when each fits, their tradeoffs, and how to avoid common pitfalls.
·5 min read