𝗪𝗵𝘆 Medium 𝗱𝗶𝘁𝗰𝗵𝗲𝗱 𝗡𝗼𝗱𝗲𝗝𝗦 𝗳𝗼𝗿 𝗚𝗼.

Medium's feed was not that good a few years ago. The job of their recommendation engine was to show as many personalized stories to the user as they could. In 2018, their codebase was entirely a NodeJS monolith, and their feed not rendering quickly e...