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From Niclas Hedhman <nic...@hedhman.org>
Subject Re: Apache Zest / Apache Cassandra
Date Sun, 21 Feb 2016 00:54:26 GMT
On analytics; I have never enjoyed the OLAP world, and I take your word for


On Sun, Feb 21, 2016 at 3:38 AM, Jiri Jetmar <juergen.jetmar@gmail.com>

> Hi guys,
> what is the status of the Apache Cassandra Entity Store ? Somehow I can
> remember that Cassandra was supported but can not
> find it in the current development branch.
> The reason I;m asking is because Cassandra works well with the analytical
> Apache Spark stack.
> Assume a scenario where you have e.g. the following Domain Models like :
> - Products
> - Orders
> - Users
> Each Domain has  its own Api, Usercases and States that is stored in the
> DM. Now you have e.g. a Webshop UI on top of the
> above Domains.
> Now you want to answer questions like : What kind of Users are buying
> Product X. Or, find those Users that are most likely buying
> Product X in the next Y days.
> To answer those questions is typically a challenge of "Data Analytics"
> using algorithm like PCA, Random Forest, Regressions, XGBoost, etc.
> All can be done surely in Java, but from my impression the Python community
> built over the last years an amazing tool set and environments.
> Also a "Data Scientist"  has to try out different things, until a good and
> robust prediction is done. So the workflow is interactive and here is where
> Apache Spark is offering
> great tools, including the usage of the IPython/Jupyter Notebooks. Another
> benefit is that one does not need to kick-on any ETL Jobs to transfer the
> transactional data from the Domain Models to the analytical world -
> Cassandra does this already. So one can do all the analysis on a realtime
> snapshot
> without influencing the transactional processing.
> Thank you.
> Cheers,
> Jiri

Niclas Hedhman, Software Developer
http://zest.apache.org - New Energy for Java

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