cassandra clustering key - Wikitechy https://www.wikitechy.com/interview-questions/tag/cassandra-clustering-key/ Interview Questions Mon, 13 Sep 2021 11:37:53 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png cassandra clustering key - Wikitechy https://www.wikitechy.com/interview-questions/tag/cassandra-clustering-key/ 32 32 What is the best method for storing lists of large objects in Cassandra ? https://www.wikitechy.com/interview-questions/cassandra/what-is-the-best-method-for-storing-lists-of-large-objects-in-cassandra/ https://www.wikitechy.com/interview-questions/cassandra/what-is-the-best-method-for-storing-lists-of-large-objects-in-cassandra/#respond Tue, 13 Jul 2021 05:08:24 +0000 https://www.wikitechy.com/interview-questions/?p=428

Cassandra large objects:

nosql database
  • All header information variables become static attached to your primary key.
  • Parcel information will become non-static variables.
  • Your clustering column will identify each parcel data object.
  • This way you should get all parcel information belonging to a header with just one lookup. (There are many examples out there in the web, describing this pattern).
  • Generally speaking, it’s never a good idea to build relationships in Cassandra with the use of multiple tables.
  • If there’s no way out use data duplication to achieve “single read get’s all” queries.
storing lists of large objects in cassandra
]]> https://www.wikitechy.com/interview-questions/cassandra/what-is-the-best-method-for-storing-lists-of-large-objects-in-cassandra/feed/ 0 What is cluster, node and key space in cassandra ? https://www.wikitechy.com/interview-questions/cassandra/what-is-cluster-node-and-key-space-in-cassandra/ https://www.wikitechy.com/interview-questions/cassandra/what-is-cluster-node-and-key-space-in-cassandra/#respond Tue, 13 Jul 2021 04:59:49 +0000 https://www.wikitechy.com/interview-questions/?p=417

cluster:

  • Cluster is a collection of multiple data centers.
cassandra cluster node

Node:

  • Cassandra is a distributed database management system designed to handle large amounts of data across many commodity servers.
  • Like all other distributed database systems, it provides high availability with no single point of failure.
  • Is a machine where Cassandra is running.
cassandra ring with vnodes

keyspace:

  • A keyspace in Cassandra is a namespace that defines data replication on nodes.
  • A cluster contains one keyspace per node. Given below is the syntax for creating a keyspace using the statement CREATE KEYSPACE.
  • It is similar to a database in Relational Database Management System, which is a group of tables, also called column families in Cassandra.
CREATE KEYSPACE <identifier> WITH <properties>
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