Deepak Kumar

Blog

Node.js.

4 posts
  1. 01

    Load-Testing a URL Shortener

    Part 2 · Medium

    Pushing the linkpulse redirect path with k6 until something gave. A fixed VU test measures concurrency, not throughput, and at 3,000 requests a second one Node process ran out of CPU while Redis and Postgres sat at about 25%.

  2. 02

    Building a URL Shortener: Six Design Decisions and the Alternatives I Rejected

    Part 1 · Medium

    Six decisions behind a URL shortener that runs in public, each with the alternative I rejected: a 302 rather than a 301, caching misses as well as hits, a sliding window rate limiter in Lua, and refresh tokens with reuse detection.

  3. 03

    Building a Caching Proxy Server in Node

    Medium

    A Node CLI that sits in front of any server, caches its responses locally and marks each reply with an X-Cache HIT or MISS header, with a command to purge the cache.

  4. 04

    Building a CLI app in Node.js

    Medium

    Building a Node.js CLI with commander.js, then making it pleasant with Chalk, Inquirer and loaders. The example project prints a user's recent GitHub activity.