Yelp engineer Virginia T talks about “Rebuilding the Yelp Public API.” Technology constantly changes, tools and libraries that were once cutting edge may become outdated, and sometimes a properly working feature built several years ago may need a technical face lift. In this talk, we’ll be sharing our experiences of going from a homegrown web framework to Pyramid, migrating our rate limiting implementation from MySQL to Cassandra, and making difficult technical tradeoffs.