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From Prem Yadav <>
Subject Re: Cassandra use cases/Strengths/Weakness
Date Fri, 04 Jul 2014 19:31:19 GMT
Thanks Manoj. Great post for those who already have Cassandra in production.
However it brings me back to my original post.
All the points you have mentioned apply to any big data technology.
Storage- All of them
Query- All of them. In fact lot of them perform better. Agree that CQL
structure is better. But hive,mongo all good
Availability- many of them

So my question is basically to Cassandra support people e.g.- Datastax Or
the developers.
What makes Cassandra special.
If I have to convince my CTO to spend million dollars on a cluster and
support, his first question would be why Cassandra? Why not this or that?

So I still am not sure about what special Cassandra brings to the table?

Sorry about the rant. But in the enterprise world, decisions are taken
based on taking into account the stability, convincing managers and what
not. Chosen technology has to be stable for years. People should be
convinced that the engineers are not going to do a lot of firefighting.

Any inputs appreciated.

On Fri, Jul 4, 2014 at 7:07 PM, Manoj Khangaonkar <>

> These are my personal opinions based on few months using Cassandra. These
> are my views. Others
> may have different opinion
> regards
> On Fri, Jul 4, 2014 at 7:37 AM, Prem Yadav <> wrote:
>> Hi,
>> I have seen this in a lot of replies that Cassandra is not designed for
>> this and that. I don't want to sound rude, i just need some info about this
>> so that i can compare it to technologies like hbase, mongo, elasticsearch, solr,
>> etc.
>> 1) what is Cassandra designed for. Heave writes yes. So is Hbase. Or
>> ElasticSearch
>> What is the use case(s) that suit Cassandra.
>> 2) What kind of queries are best suited for Cassandra.
>> I ask this Because I have seen people asking about queries and getting
>> replies that its not suited for Cassandra. For ex: queries where large
>> number of rows are requested and timeout happens. Or range queries or
>> aggregate queries.
>> 3) Where does Cassandra excel compared to other technologies?
>> I have been working on Casandra for some time. I know how it works and I
>> like it very much.
>> We are moving towards building a big cluster. But at this point, I am not
>> sure if its a right decision.
>> A lot of people including me like Cassandra in my company. But it has
>> more to do with the CQL and not the internals or the use cases. Until now,
>> there have been small PoCs and people enjoyed it. But a large scale
>> project, we are not so sure.
>> Please guide us.
>> Please note that the drawbacks of other technologies do not interest me,
>> its the strengths/weaknesses of Cassandra I am interested in.
>> Thanks
> --

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