for read-heavy, low-write data, what caching strategies do you use?

hey everyone, i'm wrestling with a common problem in system design, how to efficiently cache data that's accessed frequently but updated rarely. think user profile data, configuration settings, or even product catalogs. we've looked at standard in-memory caches, but for larger datasets, memory can become a bottleneck. what are your go-to strategies for this scenario? are you using distributed caches like Redis or Memcached, or have you found success with other approaches? how do you handle cache invalidation when those rare writes *do* happen to minimize the window of stale data