You may have data warehousing experience but you don't have experience in big data. You used Berkely DB ages ago, but don't have experience with Reddis. Why would you use Python on the server side when you can use NodeJS?
Do you really think that the new software components are that revolutionary? At best, they're an evolution of older ideas, and an experienced programmers understands the reasons for that evolution. At their worst, they're a re-implementation of old ideas that have failed, only their implementors didn't have enough experience to know that.
That was satirical.
Nit picking: Redis, not Reddis.
Question: Do you use NodeJS cluster mode? Also Python has a very nice asynchronous task system such as Celery. Is there any equivalent software in NodeJS echo system?
No I use Python. That was my point. Tried, tested, solid software is what I want to use, not some half arsed JavaSricpt reimplementation, that kind of works, but is the latest new thing so we "have to use it".