Amazon ElastiCache

Definition of Amazon ElastiCache

Amazon ElastiCache is a fully managed in-memory caching service provided by Amazon Web Services (AWS). It improves the performance of web applications by allowing the retrieval of data from fast, managed, in-memory caches, instead of relying on slower disk-based databases. ElastiCache supports two popular open-source caching engines: Memcached and Redis.


The phonetics of the keyword “Amazon ElastiCache” can be represented as:- Amazon: \ˈa-mə-ˌzän\- ElastiCache: \i-ˈlas-ti-ˈkaʃ\Putting it together, it would be: \ˈa-mə-ˌzän i-ˈlas-ti-ˈkaʃ\

Key Takeaways

  1. Amazon ElastiCache is a fully managed, in-memory data store and cache service that helps improve the performance of web applications by allowing retrieval of data from fast, managed, in-memory caches, instead of relying on slower disk-based databases.
  2. ElastiCache supports two popular open-source in-memory caching engines, Redis and Memcached, allowing seamless integration with existing applications using these technologies and facilitating easy migration between the two engines.
  3. With its scalability, high availability, and security features, ElastiCache is suitable for a wide range of use cases, including database caching, session store, gaming, real-time analytics, and geo-spatial applications.

Importance of Amazon ElastiCache

Amazon ElastiCache is an important technology term because it is a fully managed, in-memory caching service provided by Amazon Web Services (AWS) that enhances the performance and scalability of web applications by enabling the quick retrieval of frequently accessed data.

It supports popular open-source caching engines such as Redis and Memcached, allowing developers to integrate ElastiCache seamlessly into their existing tech stack.

By using ElastiCache, businesses can reduce latency and lighten the load on their databases, improving user experience and ensuring that applications run smoother even during high-traffic periods.

Furthermore, ElastiCache enables automatic scaling and failure recovery, ensuring the reliability and cost-effectiveness of an application’s caching layer.

In short, Amazon ElastiCache is a powerful tool for developers and businesses seeking to optimize the performance and stability of their web applications.


Amazon ElastiCache is a fully managed, in-memory data store and cache service designed to enhance the performance of web applications and other software systems. It primarily serves the purpose of accelerating data access by keeping frequently used data in memory, thereby reducing the latency involved in retrieving information from disk-based storage systems. This data store can be leveraged by a wide range of applications, including social media, gaming, media sharing, and e-commerce platforms, to handle numerous requests without compromising on speed and responsiveness.

The performance boost provided by ElastiCache allows organizations to scale their applications seamlessly and effectively cater to increasing user demands. One of the main uses of Amazon ElastiCache is to improve the performance of read-heavy and compute-heavy workloads by serving as a high-speed in-memory cache layer between client applications and back-end data stores. By reducing the load on the data stores and minimizing complex computation tasks, it helps applications to deliver a more consistent and faster user experience.

Additionally, ElastiCache supports horizontal scaling, enabling businesses to accommodate fluctuating workloads and support a growing user base. It is fully compatible with popular in-memory engines, such as Redis and Memcached, making it easy to integrate into existing applications or develop new use cases. Overall, Amazon ElastiCache is a valuable technology solution that offers businesses a reliable and efficient method for scaling their applications while maintaining high performance levels.

Examples of Amazon ElastiCache

Amazon ElastiCache is a fully managed in-memory data store and caching solution that can help improve the performance of web applications by allowing them to quickly retrieve information from in-memory data instead of relying on slower disk-based storage.

Expedia, Inc. – Expedia is an online travel agency that provides hotel reservations, airline tickets, vacation packages, and car rentals. The company uses Amazon ElastiCache to store and retrieve search-related data for its travel-related pricing and inventory. By caching these data instead of hitting their database repeatedly, Expedia significantly improved response time, reduced latency, and increased the overall customer experience on its websites and mobile applications.

Airbnb – Airbnb is a marketplace that connects hosts and guests from around the world. It uses Amazon ElastiCache to improve the performance of its search results by caching listings and other related information. By reducing the reliance on their primary database and speeding up access to frequently searched listings, Airbnb can deliver a consistently fast and reliable experience for their users, even during peak traffic periods.

Supercell – Supercell is a leading mobile game developer known for popular titles like Clash of Clans, Boom Beach, and Hay Day. They use Amazon ElastiCache to help improve the speed and performance of their games by caching user profiles and game state data, and reducing the load on their primary database. This enables them to handle millions of users and concurrent connections without compromising on the gaming experience for their players.In all of these cases, Amazon ElastiCache allows businesses to scale and provide faster, more reliable experiences to their customers while reducing database load and infrastructure costs.

Amazon ElastiCache FAQ

1. What is Amazon ElastiCache?

Amazon ElastiCache is a fully managed, in-memory data store and cache service provided by Amazon Web Services. It offers great performance, high availability, and seamless scalability to support high-performance use cases such as caching, real-time analytics, and databases.

2. What are the benefits of using Amazon ElastiCache?

Some of the key benefits of using Amazon ElastiCache include improved application performance, low latency, high throughput, automatic management of the infrastructure, and cost-effectiveness when compared to managing cache clusters on your own.

3. How does Amazon ElastiCache work?

Amazon ElastiCache makes it simple to deploy, operate, and scale in-memory data stores and cache servers. It supports popular open-source engines such as Redis and Memcached. You can easily create a new ElastiCache cluster by choosing the desired cache engine, memory capacity, and other configurations. ElastiCache handles all the operational aspects such as patching, monitoring, and failure recovery.

4. What is the difference between Redis and Memcached in Amazon ElastiCache?

Although both Redis and Memcached are popular caching solutions, there are some differences between them. Redis provides a wider range of data structures, persistence options, and advanced features like transactions and pub/sub messaging. Memcached, on the other hand, is simpler and offers higher availability in certain scenarios. The choice depends on your specific use case and requirements.

5. How can I monitor my Amazon ElastiCache clusters?

Amazon ElastiCache provides various monitoring tools, including integration with Amazon CloudWatch, which allows you to monitor key metrics, set alarms, and receive notifications. In addition, you can use ElastiCache Events for a real-time stream of events related to your cache clusters, which can be useful for troubleshooting and analysis.

6. What are some common use cases for Amazon ElastiCache?

Some common use cases for Amazon ElastiCache include caching for web applications, real-time analytics with large datasets, leaderboards for gaming applications, rate limiting for APIs, managing session data, and many more high-performance application scenarios that need a fast and reliable in-memory cache system.

Related Technology Terms

  • Database Caching
  • In-memory Data Store
  • Redis
  • Amazon Web Services (AWS)
  • Memcached

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents