How is Cassandra designed?
Cassandra is designed such that it has no master or slave nodes. It has a ring-type architecture, that is, its nodes are logically distributed like a ring. Data is automatically distributed across all the nodes. Similar to HDFS, data is replicated across the nodes for redundancy.
What is the architecture used by Apache Cassandra?
Cluster Topology and Design. Cassandra is based on distributed system architecture. In its simplest form, Cassandra can be installed on a single machine or in a docker container, and it works well for basic testing. A single Cassandra instance is called a node.
What is Cassandra data modeling?
Cassandra Data modeling is a process used to define and analyze data requirements and access patterns on the data needed to support a business process. A data model helps define the problem, enabling you to consider different approaches and choose the best one.
What is Cassandra and how it works?
Cassandra is a peer-to-peer distributed system made up of a cluster of nodes in which any node can accept a read or write request. Similar to Amazon’s Dynamo DB, every node in the cluster communicates state information about itself and other nodes using the peer-to-peer gossip communication protocol.
What are the features of Apache Cassandra?
Features of Cassandra
- High Scalability. Cassandra is highly scalable which facilitates you to add more hardware to attach more customers and more data as per requirement.
- Rigid Architecture.
- Fast Linear-scale Performance.
- Fault tolerant.
- Flexible Data Storage.
- Easy Data Distribution.
- Transaction Support.
- Fast writes.
What is Cassandra good for?
Time-series data: Cassandra excels at storing time-series data, where old data does not need to be updated. Globally-distributed data: Geographically distributed data where a local Cassandra cluster can store data and then reach consistency at later points.
What are the benefits of Cassandra?
Some other benefits of Cassandra include:
- Flexible data storage. Cassandra can handle structured, semi-structured, and unstructured data, giving users flexibility with data storage.
- Flexible data distribution.
- Supports ACID.
What is Cassandra column family?
Column Family in Cassandra is a collection of rows, which contains ordered columns. They represent a structure of the stored data. These Cassandra Column families are contained in Keyspace. There is at least one Column family in each Keyspace. They are key or columns name, timestamp and value.
How is data replicated in Cassandra?
Cassandra stores data replicas on multiple nodes to ensure reliability and fault tolerance. A replication factor of one means that there is only one copy of each row in the Cassandra cluster. A replication factor of two means there are two copies of each row, where each copy is on a different node.
Is Cassandra a NoSQL?
Cassandra – Introduction. Apache Cassandra is a highly scalable, high-performance distributed database designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure. It is a type of NoSQL database. Let us first understand what a NoSQL database does.
What is Cassandra database?
Cassandra is a NOSQL database which has high Scalability and Availability. It is derived from Google BigTable and Amazon Dynamo DB. It has Master-less distributed peer to peer architecture and peers communicate with the help of Gossip protocol.
What is Apache database?
Apache Derby (previously distributed as IBM Cloudscape) is a relational database management system ( RDBMS ) developed by the Apache Software Foundation that can be embedded in Java programs and used for online transaction processing. It has a 3.5 MB disk-space footprint.
What is Cassandra DB?
Apache Cassandra (Cassandra DB) is a free and open-source distributed wide column store NoSQL database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure.