Memory cache service
Memcache is a high-performance, distributed memory object caching system. It is used to speed up dynamic web applications by reducing the database load. Memcache stores data in memory to provide faster access to frequently requested data.
What is Memory cache service
Memcache is a distributed memory caching system designed to speed up dynamic web applications by reducing the load on databases. It achieves this by storing data in memory, allowing for quicker retrieval of frequently accessed information. Memcache is widely used in large-scale web applications to improve performance and scalability.
Originally developed by Danga Interactive for LiveJournal, Memcache has become a popular choice for many high-traffic websites. It is an open-source project and has been adopted by numerous companies to enhance the performance of their web applications. Memcache works by storing key-value pairs in memory, which can be quickly accessed by the application.
Memcache is particularly useful for applications that require fast access to data, such as social media platforms, e-commerce sites, and content management systems. By caching data in memory, Memcache reduces the need for repeated database queries, thereby improving response times and reducing the load on database servers. This results in a more responsive and scalable application.
Memory cache service runs on TCP and UDP port 11211 and is official IANA port.Security risk
If port 11211 is open and the Memcache service is running, it can be exploited by attackers to perform cache poisoning or data theft. Unauthorized access to Memcache can lead to exposure of sensitive data and potential denial of service attacks. It is crucial to secure this port and restrict access to trusted sources only.
In our UFW tutorial you can follow instructions how you can configure UFW to close port 11211. Use StackChanges to monitor if the Memory cache service port is closed and stays closed. StackChanges will send an alert if port 11211 is open again.