We've been using the EWS SDK for a few years now and after many mistakes, we've decided it was time to refactor our code base to reflect what we've learned. One issue we see happen every once in a while is that all EWS call fails because it's pointing to a CAS that is malfunctioning. The solution seems as easy as firing off a background thread every n seconds where n represents how often we'll autodiscover.
I've scoured the web and can't seem to find any information relating to the matter.
How often should I autodiscover?