For me it is. However i tend to just use in-memory caches instead of a cache server, which may suffer the same issue. For standard websites, this is a non-issue

For me it is. However i tend to just use in-memory caches instead of a cache server, which may suffer the same issue. For standard websites, this is a non-issue for CRUD, for task/activity based sites that can have long lived tasks that persist after a request this is very important.