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From Ertio Lew <ertio...@gmail.com>
Subject Why don't you start off with a “single & small” Cassandra server as you usually do it with MySQL?
Date Wed, 18 Sep 2013 13:34:27 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 ?

I don't want to compare apples with oranges. I just want to know how much
more dangerous situation I may be in when I start out with a single node
VPS based cassandra installation Vs a single node VPS based MySQL
installation. Difference between these two situations. Are cassandra
servers more prone to be unavailable than MySQL servers ? What is bad if I
put tomcat too along with Cassandra as people use LAMP stack on single
server.

---------


*This question is also posted at StackOverflow
here<http://stackoverflow.com/questions/18462530/why-dont-you-start-off-with-a-single-small-cassandra-server-as-you-usually>
&
has an open bounty worth +50 rep.*

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