Archive - June 11, 2019

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Understanding Cassandra Data Modelling, Partition and clustering keys

Understanding Cassandra Data Modelling, Partition and clustering keys

Let’s get started:- Overview of Cassandra Cassandra is a NOSQL database developed by Facebook. It is a great database that allows you to effectively run queries on large amount of structured and semi structured data. To know when you have to choose Cassandra as your database of choice, you need to have an understanding of CAP Theorem. CAP theorem states that it is impossible for a distributed system to satisfy all three of these guarantees together, you need to leave one out. C is Consistency, means all nodes have the same data at the same time P is partition tolerance, means that in case of failure the system continues to operate A is availability , make sure every request receives a response In Cassandra,¬†availability and partition tolerance are considered to be more important than consistency in Cassandra. However you can tune consistency also with replication factor and consistency level to[…]

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