Elasticsearch and Solr are “search platforms”, not “databases”. The best description for Cassandra, especially for a CTO, is its home page: http://cassandra.apache.org/ Even if you have seen it before, please read it again. There is a lot packed into a few words.
DataStax Enterprise (DSE) combines Cassandra, Hadoop and Spark for analytics, and tightly integrated Solr for rich search of the Cassandra data. The main, biggest benefit of Cassandra is that it is a master-free distributed real-time database designed for scale, including support for multiple data centers, so that it is ready for managing mission critical operational data, for applications that need low latency and high availability for real-time data access. And OpsCenter is great for managing a Cassandra or DSE cluster. I’m sure a CTO would appreciate it: http://www.datastax.com/what-we-offer/products-services/datastax-opscenter Here’s a feature comparison of some NoSQL databases: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis -- Jack Krupansky From: Prem Yadav Sent: Friday, July 4, 2014 10:37 AM To: user@cassandra.apache.org Subject: Cassandra use cases/Strengths/Weakness 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
