Cassandra is a partitioned row store database in which rows are grouped into tables and a primary key is required. Using the CQL, any authorised user can connect to any node in any datacenter and access data. CQL has a comparable syntax to SQL and works with table data. Any node in th...
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 N
In the context of websites and applications, when people refer to a “database” they’re often talking about a computer program that allows them to interact with their database. These programs, known more formally as adatabase management system(DBMS), are often installed on a virtual private...
The data structure components of Cassandra are keyspaces, tables, rows, and columns. A keyspace is the outermost grouping of data similar to a schema in a relational database, and all tables belong to a keyspace. You configure replication at the keyspace level, which means that all table...
Discover what is Apache Cassandra: its definition, architecture, components, data models, key features, advantages, and use cases in this comprehensive guide.
Event Sourcing: The API for Cassandra provides access to a persistent change log, theChange Feed. The change feed can facilitate event sourcing directly from the database. In Apache Cassandra, change data capture (CDC) is the only equivalent feature. CDC is merely a mechanism to flag specific...
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(HDFS, SQL, Cassandra, etc.). After that, any computations performed on that data are done in memory without any expensive queries; this makes analytics much much faster than Hadoop. If you go tohttp://spark.apache.org, that little graph on the landing page which shows the performance ...
Azure Cosmos DB for Apache Gremlin is a graph database service that can be used to store massive graphs with billions of vertices and edges. You can query the graphs with millisecond latency and evolve the graph structure easily. The API for Gremlin is built based onApache TinkerPop, a graph...
Cassandra is mostly a column store database. Some studies referred to Cassandra as a hybrid system, inspired by Google’s BigTable, which is a column store database, and Amazon’s DynamoDB, which is a key-value database. This is achieved by providing a key-value system, but the keys ...