Advantages of MongoDB

Advantages of MongoDB:

1. MongoDB enables horizontal scalability by using a technique called sharding. Sharding distributes the data across physical partitions to overcome the hardware limitations. The data is automatically balanced in the clusters.

2. It also provides ACID properties at the document level as in the case of relational databases.

3. It supports replica sets; in other words, a failover mechanism is automatically handled. If the primary server goes down, the secondary server becomes the primary automatically, without any human intervention.

4. It supports the common authentication mechanisms, such as LDAP, AD, and certificates. Users can connect to MongoDB over SSL and the data can be encrypted.

5. MongoDB can be a cost effective solution because improves flexibility and reduces cost on hardware and storage.

Resource Link: http://www.developer.com/db/mongodb-nosql-solution-advantages-and-disadvantages.html