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Learning AWS - Second Edition by Amit Shah, Aurobindo Sarkar

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Optimizing database utilization and costs

Caching and Read Replicas can reduce the capacity required for your database instance in read-intensive transactions/applications. For example, for read-intensive workloads in particular, using caching instead of PIOPs on a DB server can cut down your expenses, substantially (sometimes up to 80-90%). For caching the data, you can leverage the spare local RAM caches available in your application server instances or use Amazon ElastiCache (there is a cost involved but that may be lower than additional capacity allocation for your database instance for your application type).

The most common and the simplest optimization for databases is to cache as much data as you can because caching saves money. For ...

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