so for user content caching, i think about a few things. first, is it static or dynamic?

hey all, im working on a platform with a lot of user-generated content, think forum posts, comments, and user profiles. we're seeing a lot of read traffic on this content. what are your go-to strategies for caching this kind of data? are you primarilly using in-memory caches, distributed caches like Redis, or something else? how do you handle cache invalidation when users edit or delete their content? curious to hear your real-world experiences and any pitfalls to avoid.