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From "Durity, Sean R" <SEAN_R_DUR...@homedepot.com>
Subject RE: [EXTERNAL] performance
Date Mon, 02 Dec 2019 15:14:59 GMT
I’m not sure this is the fully correct question to ask. The size of the data will matter.
The importance of high availability matters. Performance can be tuned by taking advantage
of Cassandra’s design strengths. In general, you should not be doing queries with a where
clause on non-key columns. Secondary indexes are not what you would expect from a relational
background (and should normally be avoided).

In short, choose Cassandra if you need high-availability and low latency on KNOWN access patterns
(on which you base your table design).

If you want an opinion – I would never put data over a few hundred GB that I care about
into mysql. I don’t like the engine, the history, the company, or anything about it. But
that’s just my opinion. I know many companies have successfully used mysql.


Sean Durity

From: hahaha sc <shicheng31604@gmail.com>
Sent: Friday, November 29, 2019 3:27 AM
To: cassandra-user <user@cassandra.apache.org>
Subject: [EXTERNAL] performance

Query based on a field with a non-primary key and a secondary index, and then update based
on the primary key. Can it be  more efficient than mysql?

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