Memcached is an open-source, high-performance distributed memory caching system designed to improve application speed by reducing database load. It is widely used for caching database query results, API responses, and session data.

Features of Memcached:

• Simple and fast key-value store for efficient data caching.
• Distributed architecture for scaling across multiple servers.
• Supports a wide range of programming languages and libraries.
• Lightweight and minimal resource usage for high performance.
• Eviction mechanism for automatic removal of old or unused data.
• Flexible memory allocation with slab allocation technique.
• Enhanced application responsiveness by reducing latency.

To check the installed version of Memcached, use the following command:

memcached -V

Disclaimer: Memcached is open-source software provided under the Revised BSD License. It is offered "as is," without any warranty, express or implied. Users are responsible for ensuring the ethical and legal use of Memcached in their projects.