Double Your Cache, Double Your Fun

Long, long ago, when I was at GitHub, the file servers were setup active-passive, with the passive replicas sitting relatively unused. In an effort to prevent them from twiddling their thumbs, they were used as the primary memcached cluster. Sharing resources like this had benefits like less cost and higher…

How we designed Flipper Cloud to never take your app down

The first hesitation most people have with a cloud-based feature flag service is assuming that their feature flags checks will now require a network connection to said cloud. Many do, but ours doesn't. When I considered starting Flipper Cloud, my overriding concern was how can we ensure that…