Cassandra Review

Some of the valuable features include automated replication, linear scalability, and automated region fail-over


What is most valuable?

I really appreciate the high availability, automated replication, linear scalability, and automated region fail-over.

How has it helped my organization?

We've used Apache Cassandra for solutions that we sell to our customers. It's used as our cloud based backend store as a temporary cache and for storing data that streams through our data pipe. It's an excellent high speed store.

What needs improvement?

Out-of-the-box monitoring, troubleshooting, and maintenance are involved. There are several utilities/interfaces available for use, but one would have to educate himself and learn the intricacies of managing a Cassandra cluster.

For example, we recently hired a consulting firm to make recommendations on how to approach maintenance and the health of the cluster and we're learning from that experience.

For how long have I used the solution?

I have used this product for approximately two years.

What do I think about the stability of the solution?

We have had stability issues including out of memory issues and crashes with earlier versions of the product.

What do I think about the scalability of the solution?

We’ve not really had scalability issues, but scalability is solved by advanced tuning or adding nodes.

How is customer service and technical support?

We use the open source version, so support is pretty much on our group of developers and public forums/user groups. For example, I'm a member of the Cassandra user list mail group.

Which solutions did we use previously?

This is a new cloud based enterprise product, so there weren't previous solutions.

How was the initial setup?

The setup is not terribly complex, but a learning process was involved.

What's my experience with pricing, setup cost, and licensing?

We use the open source version, so it's free. Costing needs to take into account home grown maintenance and support, as that can get involved.

Which other solutions did I evaluate?

We looked at Hadoop, Spark, Spark Streaming, and MongoDB.

What other advice do I have?

If you plan to use the open source version, make sure you hire a Cassandra expert or train yourself in the internals of Cassandra.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
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