Does anyone have experience running Flask at scale? I used it once, for a small internal reporting service, and was shocked to find that it was designed to process only a single request at a time, per process. Is this a problem in the real world, or do decent caching rules and query design render it a non issue?<p>What do flask apps do when they want a live connection to the client, or need to serve a heavy (slow) request? Communicate with a Node websocket server over a queue, and share a database?<p>I don't mean to disparage Flask. Their goal is to make it simple to stand up site with minimal boilerplate or bloat, and they succeeded at that.