These design|use patterns depend entirely on a level of abstraction facilitated by code you don't understand and I have seen this bite people badly. Using red

These design|use patterns depend entirely on a level of abstraction facilitated by code you don't understand and I have seen this bite people badly. Using redis or memcache or whatever semi-persistent , network available data store for key value pairs only has middling value (to me) and relies on adopting a data model that is severely limited in scope. If you can't understand the structure of a 'packet' on the network then you can't really troubleshoot network dependent services that provide your L7 function.