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what is Couchbase

 

Hello Techie's,

As a Techie's we all aware about the term "Database". In the last 3 decades there has been lot of new technology have been introduced in database -  Oracle, sqlserver, transcational database, middleware, Queues, topics.

When the data in the schemas started expanding, It becomes very difficult to make changes because of its Rigid structure. 

To overcome the above limitations, The new technology called NOSQL Database has been introduced.


What is Couchbase server ?

It is One of the NOSQL Database, which stores json files & binary files as a key & value pair.

SQL                        NOSQL

Database                Bucket

Table                      Virtual Bucket

Row                       Document

Column                  Field


Most Important Features:

  • Disk Independent - Data is first stored in RAM and goes to Disk, when fetching the values are first searched in RAM, If not available it searches in Disk
  • Distributed Database - Couchbase cluster will have different Nodes & Data is stored in disributed servers, so adding new nodes will extend the data
  • Fault Tolerence - Replication count for the data can be set, so the data are copies in other nodes aswell
  • Light weight
  • Very fast to read & write values
  • In-built Replication
  • Querying is similar to SQL

Couchbase Architecture 

Services which can be running on the nodes:

Data service -  RAM

Index Service

Query Service

Search Service - Optional

Analytic Service -Optional


How to Install the Couchbase in RHEL servers ?

rpm -ivh couchbase_package_version

How to check the Installed couchbase version in server ?

rpm -qa | grep couchbase

How to Uninstall the Couchbase ?

rpm -e couchbase_package_version

How to Start/Stop the Couchbase server ?

systemctl start couchbase-server

systemctl stop couchbase-server

How to check the couchbase server status ?

systemctl status couchbase-server

How to check if couchbase service is registered ?

systemctl is-enabled couchbase-server

How to disable the couchbase service ?

systemctl disable couchbase-server


Steps To create Couchbase Cluster:

  • Install Couchbase
  • Initialize Cluster
  • Join Cluster
  • Rebalance Cluster
  • Add Cluster Certs
  • Create Buckets
  • Create Users

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