Mastering Low Level Caching in Rails

Sometimes when your app is slow, it's not your fault. Your code might be optimized to the teeth, but it won't matter if it has to perform intrinsically slow tasks, like fetching data from an external API. In these situations, Rails' low-level caching can be a life-saver. But caching is infamously tricky. It's dangerous to go alone. In this article, Jonathan Chase guides us through the landscape of low-level caching. He covers the basics, but more importantly, digs into essential details of cache invalidation and points out common pitfalls.