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From Aklin_81 <>
Subject Why don't you start off with a "single & small" Cassandra server as you usually do it with MySQL ?
Date Tue, 27 Aug 2013 10:04:44 GMT
For any website just starting out, the load initially is minimal & grows
with a  slow pace initially. People usually start with their MySQL based
sites with a single server(***that too a VPS not a dedicated server)
running as both app server as well as DB server & usually get too far with
this setup & only as they feel the need they separate the DB from the app
server giving it a separate VPS server. This is what a start up expects the
things to be while planning about resources procurement.

But so far what I have seen, it's something very different with Cassandra.
People usually recommend starting out with atleast a 3 node cluster, (on
dedicated servers) with lots & lots of RAM. 4GB or 8GB RAM is what they
suggest to start with. So is it that Cassandra requires more hardware
resources in comparison to MySQL,  for a website to deliver similar
performance, serve similar load/ traffic & same amount of data. I
understand about higher storage requirements of Cassandra due to
replication but what about other hardware resources ?

Can't we start off with Cassandra based apps just like MySQL. Starting with
1 or 2 VPS & adding more whenever there's a need. Renting out dedicated
servers with lots of RAM just from the beginning may be viable for very
well funded startups but not for all.

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