When your app reads a lot more than it writes, you need smart caching.

hey folks, i'm working on a project that's seeing a huge increase in read traffic. we're thinking about adding caching to make things run faster and take some pressure off the database. what are your go-to caching strategies when you've got tons of reads going on? are you guys using in-memory stuff like Redis or Memcached, or maybe looking into distributed caching options? any advice on cache invalidation that actually helps, and doesn't just create more headaches