Introducing Thumbor replaces an existing service, and as such it’s important that it doesn’t preform worse than its predecessor. We came up with a strategy to reach feature parity and ensure a launch that would be invisible to end users.
To understand why Thumbor is a good fit, it’s important to understand where it fits in our overall thumbnailing architecture. A lot of historic constraints come into play, where Thumbor could be adapted to meet those needs.
Making Thumbor production-ready for Wikimedia is a journey that started a year and a half ago. Let’s look at the rationale for this project.