Understand that Cassandra is a distributed database, and learn about the ring architecture of Cassandra clusters.
- [Instructor] When designing Cassandra data models,…it helps to understand how data is organized…on a single node and across nodes.…We've talked about how the clustering key…and the partition key are used when querying.…Now, let's look at how they're used…when we write data to the cluster.…In this example, we have a cluster of five nodes.…All nodes perform the same kinds of operations…and can communicate with other nodes.…There's no distinction…between master and worker nodes in Cassandra.…All nodes run the same services.…
A partitioner is a hash function that maps…from the partition key to a node in the cluster.…The default partitioner keeps data evenly distributed…across nodes and is generally a good choice.…The partitioner is designed to minimize…the amount of data that has to be moved…when a node is added or removed from the cluster.…This type of hash function is called…a consistent hash function.…When data is written to a node,…replicas are created.…The number of replicas and the placement of replicas…will depend on the cluster's configuration.…
- Cassandra architecture
- Keyspaces, tables, and columns
- Installing Java and Cassandra
- CQL data types
- Designing Cassandra tables
- Tuning tables to optimize queries
- When to use secondary indexes and materialized views
- Physical data modeling and distributing data
- Cassandra architecture and its impact on data modeling
Skill Level Intermediate
1. Cassandra Architecture
2. Cassandra Query Language Data Types
3. Designing Cassandra Tables
4. Physical Data Modeling and Distributing Data
Replication in Cassandra2m 1s
5. Cassandra Architecture and Its Impact on Data Modeling
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