Thanks! That gives me something to research.
Now that I look, I should have caching set to expire on the date I update the site’s pages, to make sure user’s are getting the updates. So it’s for more than favicons.
Then looking up what to put in, is confusing as anything.
I wish and don’t remotely understand why posters of tech blogs on the internet do not date their writings.
So at this point, I am very unclear what the current working code is to add into the files, to force non-caching is. I need to do much more research, it looks like. Unless somewhere here knows?
You’ve given me a great starting point — a clue what text I needed to search for to get somewhere!
So far I’ve found:
https://www.mnot.net/cache_docs/#IMP-SERVER from May 2013
Case study: http://securityevaluators.com/knowledge/case_studies/caching/
lots of ideas: http://stackoverflow.com/questions/1341089/using-meta-tags-to-turn-off-caching-in-all-browsers