MongoDB is a definitely leading NoSQL data store for current business trends.
Overall Satisfaction with MongoDB
Scaling the systems horizontally by distributing the load across the geographic systems both in on-prime as well as in cloud. improved the response times. provided support for our agile methodology software development life cycles with dynamic schema's, etc.
Pros
- Horizontal and Veritical Scalling
- High Availability, Disaster Recovery
- High Durability and better response times
- Easy to switch between servers with commodity hardware
Cons
- Rich relational features like fuzzy logic, dataware house features
- Easy monitoring and administration tools native with Mongo
- Better election process by reducing downtime during elections
- Empoyee Training
- Adopt to new technologies
- better software development cycles
Cassandra, CouchDB were master less technology platforms. MongoDB single master per shard is well suited for many business models

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