Riak vs TokuMX: What are the differences?

Riak: A distributed, decentralized data storage system. Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your client can reach one Riak server, it should be able to write data. In most failure scenarios, the data you want to read should be available, although it may not be the most up-to-date version of that data; TokuMX: A high-performance, concurrent, compressing, drop-in replacement engine for MongoDB. TokuMX is a drop-in replacement for MongoDB, and offers 20X performance improvements, 90% reduction in database size, and support for ACID transactions with MVCC. TokuMX has the same binaries, supports the same drivers, data model, and features of MongoDB, because it shares much of its code with MongoDB.

Riak and TokuMX belong to "Databases" category of the tech stack.

"High Performance " is the primary reason why developers consider Riak over the competitors, whereas "When your two-week MongoDB love affair ends, try this" was stated as the key factor in picking TokuMX.

Riak and TokuMX are both open source tools. Riak with 3.24K GitHub stars and 530 forks on GitHub appears to be more popular than TokuMX with 679 GitHub stars and 90 GitHub forks.