Couchbase is the best NoSQL Solution Available

On the server-side, the indexing capabilities and simplicity of just expanding the number of nodes and services are incredibly easy and highly decreases the overhead behind day to day DevOps. On the client, the SDKs are very flexible and abstracted out in a way that they are extendable and easy to consume.

Excellent in handling high data volumes both horizontally (large-sized documents) and vertically (a large number of documents). XDCR is easy to use and allows for easy migration planning from one cluster to another for upgrades, etc. Indexes can be simple or super complex and allow you really pinpoint bottlenecks in the data querying and speed up reporting.

Very well suited for platforms where the data is constantly changing, either via streaming updates, or schema updates across common types. Its sync gateway is a great out of the box solution for mobile apps to stay in sync with the server upwards and downwards without having to write your own clunky sync protocol or handle data conflicts by hand.