TLDR Web Dev · ARTICLES & TUTORIALS

HOW WE BUILT THE WORLD'S FASTEST VIN DECODER

cardog.app4 min read

Summary from the TLDR Web Dev newsletter

Cardog built the world's fastest VIN decoder by optimizing the NHTSA's VPIC database, which contains 40 years of vehicle data but doesn't have performance optimization. It achieved this by stripping regulatory metadata, removing unused patterns, and applying modern SQLite optimization techniques, reducing the database size from 1.5GB to 21MB. This resulted in a huge performance improvement, with response times decreasing from 3.2 seconds to under 30ms and eliminating network dependency.