Amazon Elasticache: Overview, Features & Use Cases

Amazon ElastiCache Uses in-memory caching to achieve latency and scaling it Improves application performance by lowering latency to microseconds.

In this blog, we are going to cover the following topics on Elasticache:

• Overview
• How does it work?
• Elaticache for Redis
  • How does it work?
  • Benefits
• Elasticache for Memcached
  • How does it work?
  • Benefits
• Key Features of Elasticache
• Use cases
• FAQ’s

What is Amazon Elasticache?

Elaticache reduces latency to microseconds while improving application performance. It fulfills the requirements of your most demanding, internet-scale applications, with only a few clicks.

Self-managed caching reduces expenses and eliminates operational overhead tasks. You can choose between Memcached or Redis, two well-known open-source caching technologies while building a solution.

Amazon Elaticache comes under the Database services of Amazon. The type of database is an In-memory database and is mostly used in caching.

How does it work?

A fully managed in-memory caching solution that supports several real-time use cases is called Amazon ElastiCache. ElastiCache may be used as the main data store for use cases including session stores, gaming leaderboards, streaming, and analytics, or for caching, which improves application and database performance.

1. The internet scale applications such as real-time apps in gaming, ride-hailing, media streaming, dating, and social media need fast data access.
2. Amazon Elasticache provides a fast in-memory data store for use as a database, cache, message broker, and queue. It stores ephemeral data in memory and gives a sub-millisecond response.
3. Elasticache is used in real-time transactions, chat, BI and analytics, session store, gaming leaderboards, and cache.

Amazon Elaticache for Redis-

A lightning-fast in-memory data storage with sub-millisecond latency that powers internet-scale real-time applications is Amazon ElastiCache for Redis. ElastiCache for Redis works with your Redis clients and uses the open Redis data format to store your data. ElastiCache for Redis is based on open-source Redis and is compatible with the Redis APIs.

ElastiCache for Redis powers the most demanding real-time applications in gaming, ad-tech, e-commerce, healthcare, and financial services. And IoT by combining the speed, simplicity, and adaptability of open-source Redis with management, security, and scalability from Amazon.

How does it work?

For establishing a highly accessible, distributed, and secure in-memory cache to reduce access latency, and boost throughput. It lightens the burden on your relational or NoSQL databases and applications, Amazon ElastiCache for Redis is a wonderful option. ElastiCache enables you to quickly expand for heavier loads without increasing the more expensive backend databases. It can offer frequently requested items at sub-millisecond response times.

Popular uses for ElastiCache for Redis include the caching of database query results, persistent session caching, and full-page caching. Discover how to use ElastiCache for Redis to create a caching application.

Benefits-

1. High Performance: The most demanding applications needing response speeds under a millisecond can be supported using Amazon ElastiCache for Redis, which functions as an in-memory data storage.
2. Security: ElastiCache now allows you to establish and maintain users and user groups that may be used to set up Role-Based Access Control (RBAC) for Redis commands as of Amazon ElastiCache for Redis version 6.
3.  Managed Fully: ElastiCache for Redis from Amazon is an entirely managed service. Management chores including hardware provisioning, software patching, setup, configuration, monitoring, failure recovery, and backups are no longer required.
4. Compatible: It is a well-liked in-memory data store that may be used as a leaderboard, message broker, queue, database, cache, and session store. Redis clients are compatible with Amazon ElastiCache for Redis’ open source Redis data formats and Redis APIs.
5. Highly available and reliable: Both Redis cluster and non-cluster modes are supported by Amazon ElastiCache for Redis. Which also offers high availability via support for automated failover by identifying primary node failures and quickly promoting a replica to be primary.
6. Easily Scalable: Redis can expand all the way up to a cluster with 310 TiB of in-memory data or 982 TiB when employing clusters with data tiering. Your Redis Cluster setup may be scaled up to 500 nodes and 500 shards using this.

Amazon Elasticache for Memcached-

A Memcached-compatible, in-memory key-value store service that may be used as a cache or a data store is called Amazon ElastiCache for Memcached. It offers Memcached’s speed, simplicity, and use. Because ElastiCache for Memcached is completely controlled, scalable, and secure.

It is a great choice for use cases where frequently requested data has to reside in memory. It is a well-liked option for use cases including e-commerce, mobile apps, gaming, and the web.

How does it work?

Implementing an in-memory cache to reduce access time, boost throughput, and lighten the stress on your relational or NoSQL database is an excellent idea with Amazon ElastiCache for Memcached.

With sub-millisecond response rates, Amazon ElastiCache enables you to quickly scale for bigger traffic without expanding the more expensive backend database layer. Popular uses for ElastiCache for Memcached include the caching of database query results, persistent sessions, and full pages.

Benefits-

1. Extreme performance: The most demanding applications needing response speeds under a millisecond may be supported by Amazon ElastiCache for Memcached. Which functions as an in-memory data storage and cache.
2. Secure: To isolate your cluster to the IP ranges you select for your nodes and utilize them to connect to your application, Amazon ElastiCache for Memcached supports Amazon VPC. ElastiCache regularly checks your nodes and installs the required fixes to maintain the safety of your environment.
3. Compatibility: Memcached is a commonly used technology for storing memory objects. Popular tools that you use today with existing Memcached installations will function flawlessly with ElastiCache since it is Memcached compatible.
4. Easily scale: Sharding is a feature of Amazon ElastiCache with Memcached that allows the in-memory cache to grow with up to 20 nodes and 12.7 TiB per cluster.
5. Fully managed: Management duties including hardware supply, software patching, setup, configuration, monitoring, and failure recovery are no longer required.
6. Auto Discovery: ElastiCache with Auto Discovery for Memcached Cluster Client reduces the amount of time you have to spend connecting applications to Memcached clusters. The client establishes a connection with a single cluster endpoint and obtains configuration details for further nodes.

Key Features of Amazon Elasticache-

• There are no up-front expenses with Amazon ElastiCache. With on-demand nodes, you make no long-term obligations and simply pay for the resources you use each hour. For each node you want to reserve for a term of one or three years, you can do so with Reserved Nodes by paying a small, upfront fee.
• The Amazon ElastiCache Free Usage Tier enables brand-new AWS users to start using a managed cloud caching service for nothing. A t2.micro or t3.micro node is available for 750 hours per month to customers who qualify for the AWS Free Usage tier.
• You can concentrate on the features that make your applications stand out by using Amazon ElastiCache. To streamline and outsource the management, monitoring, and operation of in-memory cache settings.
• Implementing it through the AWS Management Console is simple you can set up and start cache nodes for the engine you want to utilize with only a few clicks.
• compliance with the particular engine protocol. This indicates that the majority of client libraries will function with the respective engines for which they were designed – no further modifications or tweaks are necessary.
• Amazon ElastiCache is accessible in all AWS regions and allows you to run your cache nodes on Amazon Virtual Private Cloud.

Use Cases of Amazon Elasticache-

1. Accelerate application performance: Access data with low latency and high throughput for applications that run extremely quickly.
2. Ease backend database load: By caching your data, you may increase application scalability and ease operational stress while easing the load on your backend database.
3. Build low-latency data stores: Use ElastiCache to provide real-time applications with microsecond latency while storing non-durable datasets in memory.

Frequently Asked Questions:

Q1: What are Amazon ElastiCache nodes, shards, and clusters?

Ans. The smallest component of an Amazon ElastiCache setup is a node. It is a fixed-size portion of safely connected network RAM. Each node has its own DNS name, port, and instance of the Memcached or Redis protocol-compliant service. There are several different types of supported nodes, each with a different amount of memory.

Q2: How does Amazon ElastiCache interact with other Amazon Web Services?

Ans. As a front-end for Amazon Web Services like Amazon RDS and Amazon DynamoDB, Amazon ElastiCache is perfectly suited since it offers exceptionally low latency for high-speed applications. It offloads some of the request traffic while these services guarantee long-lasting data durability.

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