Mostly Used Cassandra Terminologies | Cassandra Glossary

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1. Objective – Cassandra Terminologies

In this Cassandra tutorial, we will go through all the important Cassandra Terminologies. These Terminologies in Cassandra are Cassandra Cluster, Cassandra Keyspace, Cassandra Data model, Cassandra Column Family, SStable and many more.

So, let’s start Cassandra Terminologies tutorial.

Cassandra Terminologies

Mostly Used Cassandra Terminologies | Cassandra Glossary

2. Cassandra Terminologies

Below are some mostly used Cassandra Terminologies. Let’s discuss them one by one:

i. Anti-Entropy
The mechanism that ensures that every node contains update data.

ii. Bigtable
It is one of a base for the creation of Cassandra. It was created at Google in 2006 as a high-performance database system.

iii. Bloom Filter
It is an algorithm that determines if an element is a member of a particular set.

iv. Cassandra
Open-source, distributed database management system that handles a big set of data.

v. Cluster
Cassandra Cluster is a collection of many nodes. Many clusters together form a database.

vi. Column
It is the basic or the innermost unit in the database. It contains the main data or information.

vii. Column Families
It is a storage unit in keyspace. We can consider it as a table. It contains rows and columns, that in turn, contains the data.

viii. Commit Log
It is basically a median to enter the data in Memtable an SSTable. Before going to the Memtable and SSTable, the data is stored in the commit log. This ensures that at the time of failure, the data is not lost.

ix. Compaction
It is a process that basically compresses the storage. It basically merges large files and frees up space.

x. Consistency Level
This allows the user to set the number of replicas in a cluster. In these replicas, the data is copied and it increases the redundancies.
Let’s revise Cassandra Features

xi. Dynamo
It is the other base of Cassandra. This along with principles of Bigtable led to the creation of Cassandra.

xii. Failure Detection
It is the process of determining the nodes that have experienced failure in a cluster.

xiii. Fault-Tolerant
It is the capacity of the database system to handle faults.

xiv. Keyspace
It is a storage unit in a database. Basically, it is the outermost container in a node. It contains many column families.

xv. Memtable
It is a storage table representation. The data flow here after going through the committable. After this, the data flush to disk as an SSTable.

xvi. Node
It basically represents a system. They contain many column families that contain data.
Learn Cassandra Applications | Why Cassandra Is So Popular?

xvii. NoSQL
Cassandra NoSQL basically determines the collection of non-sequential data. In other words, it is a non-relational data.

xviii. Primary key
It is a row that basically determines the main row.

xix. Replication
It is a process in which the data is copied from one node to another. This process ensures redundancies.

xx. Replication Factor
It determines the number of replicas that are created in a cluster of a given data.

xxi. Replication Strategy
Basically, the strategy that used to carry out replication in the cluster.

xxii. Row
It is a storage unit. It is a part of column family and contains many columns.

xxiii. Seed Node
It is a kind of a node which is basically used by newly added nodes to get up and running.

xxiv. SSTable
A Sort string table. It allows high performance and can be compacted.

xxv. SuperColumn
It is a column which is basically a map of other columns. In one kind it contains all the columns.
Read Cassandra Data Model | How Cassandra Stores Data

xxvi. Thrift
An API that uses when user deals with the table as a storage unit.

xxvii. Timestamp
Timestamp are column values that basically is given by the user. It determines the time of a column details.

3. Conclusion

Hence, in this article, we came across all the Cassandra terminologies. In the next article, we will go through the Cassandra Installation.
See also –
CQL Data Manipulation Commands
For reference

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