Tech article
Building a URL Shortener: My First Real Dive into Backend Fundamentals
Community description: I recently built a URL shortener, and it turned out to be one of the best decisions I've made since I...
Dev.to | Sep 15, 2026 | Ango Jeffrey
Automated excerpt
Before this project, a URL shortener was kind of a black box to me. The expiry only gets set on the very first request in a window (count === 1), which keeps the TTL accurate instead of getting pushed back on every request. So I implemented the caching logic using an LRU (Least Recently Used) cache instead.
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