Description

Creating read-only copies of a database instance to scale out read-heavy workloads.

Where to use

• Scaling read operations.
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• Analytics and reporting.

Real World Example

A primary DB handles all INSERT/UPDATEs. Five Read Replicas handle all SELECT queries for the website.

Code Example

class ReadReplicas:
    def __init__(self):
        pass

    def execute(self):
        print('Executing Read Replicas')