Accordingly, as MongoDB has a single master node, it is limited in terms of writing scalability. In the meantime, the slave nodes are only used for reads. Only the master node can write and accept input. Hence, Cassandra and MongoDB have significant differences between their writing scalabilities. Scalability is a feature directly linked to the cluster model. If a 30-40 second delay doesn’t affect your business, there is no need to prioritize high availability and burden the system with additional infrastructure. Still, make sure you have the server resources to facilitate such a setup.
The redundant model ensures high availability at all times.Ĭonclusion: If your application requires high availability and depends on instant request responses, Cassandra is the more suitable option. With multiple masters present, there is no fear of any downtime. Instead of having one master node, it utilizes multiple masters inside a cluster. During this time, the database isn’t able to respond to requests.Ĭassandra, on the other hand, uses a different model. Although the strategy of automatic failover does ensure recovery, it may take up to a minute for the slave to become the master. If the master node goes down, one of the slave nodes takes over its role. MongoDB has a single master directing multiple slave nodes.
This feature dependents on the number of master slaves in a cluster. One of the most significant differences between MongoDB and Cassandra is their strategy concerning data availability. Cassandra vs MongoDB: Differences Data Availability For database transactions that ensure atomicity, consistency, isolation, and durability, it is better to use relational databases, such as MySQL or PostgreSQL.
If you need to store data using rows and columns, in a structured format, stick to one of the many available relational databases.Īdditionally, if you need ACID-compliant databases, NoSQL is probably not the best solution. Cannot Replace RDBMS and ACIDīear in mind that neither Cassandra nor MongoDB can replace a traditional Relational Database Management System (RDBMS). On the other hand, MongoDB is one of the most popular database management systems in the world with a strong community of MongoDB developers. Initially created by developers from Facebook, Cassandra is now under the ownership of the Apache project and part of its open-source community.
Mongodb free version comparison download#
You can download the database packages, set up, and configure them at no expense. Another commonality between these two is that they are free, open-source software.
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