From MongoDB to Cassandra: Why Atlas Platform Is Migrating

Sergio Bossa tells the story of migrating the Atlas platform from using MongoDB to Cassandra emphasizing the reasons behind their decision:

• It works on the JVM, and we have lots of in-house experience on it.
• It scales in terms of processing and storage capacity.
• Its column-based data model gives us some advanced capabilities we will talk about in a few minutes.
• Its tunable consistency levels provide greater control over high availability and consistency requirements.

As regards what made them look into a different solution:

• We need higher resiliency to faults: MongoDB provides replica sets, but we’re experiencing lots of problems with replication lags and during replica synchronization.
• We need higher scalability: MongoDB global lock and huge memory requirements aren’t already going to cope well with our growing data set.

Original title and link: From MongoDB to Cassandra: Why Atlas Platform Is Migrating (NoSQL database©myNoSQL)

via: http://metabroadcast.com/blog/looking-with-cassandra-into-the-future-of-atlas