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Boost Performance by 80x and Save Costs by 55%: Amazon ElastiCache with RDS for MySQL

Blog, AWS, How to By Jul 20, 2023 No Comments

Did you know you can save up to 55% in cost and gain up to 80x faster read performance using Amazon ElastiCache with RDS for MySQL (vs. RDS for MySQL alone)

# Using ElastiCache with RDS for MySQL can provide benefits

Amazon ElastiCache is a web service that makes it easy to set up, manage, and scale in-memory cache environments in the cloud. When used in combination with Amazon RDS for MySQL, ElastiCache can provide the following benefits:

- Up to 55% lower costs 
- Up to 80x faster read performance  
- Reduced load on your MySQL database instances
- Improved scalability and availability 

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Here’s how it works:

Amazon RDS for MySQL is used as your primary database to store and serve data to your applications. As your applications access data from RDS for MySQL, that data is also cached in the ElastiCache in-memory cache.

Subsequent requests from your applications for the same data are then served from the ElastiCache cache instead of RDS for MySQL. This offloads read traffic from your MySQL instances, improving performance and reducing load.

ElastiCache automatically invalidates cached data when it is updated in RDS for MySQL. This ensures the cached data remains in sync with your primary database.

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The cost savings come from serving a large percentage of your read traffic from the faster and more cost-efficient ElastiCache cache instead of your RDS for MySQL instances.

ElastiCache also provides features like auto-scaling and high availability, so the cache can scale on demand and remain available. This improves the scalability and reliability of your overall solution.

In summary, using ElastiCache in combination with RDS for MySQL can provide significant performance, cost, scalability and availability benefits for your applications. The cache offloads read traffic from your database instances, while automatically remaining in sync with your primary data.

Hope this helps explain at a high level how ElastiCache can provide benefits when used with RDS for MySQL! Let me know if you have any other questions.


I'm Abhay Singh, an Architect with 9 Years of It experience. AWS Certified Solutions Architect.

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