Some events listed below. The goal is to add events that will help users solve problems so if these aren't going to do that job, feel free to suggest/discuss others!

• Microsoft.Extensions.Caching.Memory EventSource

  • cache-hits event & counter - Triggered when a cache lookup succeeds.
  • cache-misses event & counter - Triggered when a cache lookup fails.
  • cache-count counter - Counts the number of items in the cache
  • estimated-size counter - Counts the number of bytes based on Size values? (which are opt-in and estimates already)

• Microsoft.Extensions.Caching.Distributed EventSource

  • cache-hits event & counter - Triggered when a cache lookup succeeds.
  • cache-misses event & counter - Triggered when a cache lookup fails.
  • Size and count should be tracked on the server/service providing the cache.

See https://gist.github.com/anurse/af1859663ac91c6cf69c820cebe92303 for some guidance on adding EventSources and EventCounters to ASP.NET projects. This is out of date.