Glossary term
What is Base62? Meaning for developers
A way to write numbers with 0-9, a-z and A-Z: 62 characters that are safe in URLs. Seven characters give about 3.5 trillion codes.
Learn it properly · Practical Design ProblemsLesson 1: Design a URL Shortener (Long URL to Short URL)Making IDs, Base62, collisions, caching for read-heavy traffic, 301 vs 302 and analytics, custom aliases, expiry and stopping abuse.