REDIS
Redis is an open-source, in-memory data structure store that can be used as a database, cache, and message broker. It supports various data structures such as strings, hashes, lists, sets, and more. Redis is known for its high performance and flexibility, making it a popular choice for real-time applications.
What is REDIS
Redis, which stands for Remote Dictionary Server, is an open-source, in-memory data structure store that can be used as a database, cache, and message broker. It was created by Salvatore Sanfilippo in 2009 and has since become one of the most popular NoSQL databases. Redis supports various data structures such as strings, hashes, lists, sets, sorted sets, bitmaps, hyperloglogs, and geospatial indexes.
One of the key features of Redis is its high performance, which is achieved by keeping the entire dataset in memory. This allows for extremely fast read and write operations, making Redis an ideal choice for real-time applications such as caching, session management, real-time analytics, and message queuing. Redis also supports persistence, allowing data to be saved to disk and reloaded upon restart.
Redis is highly flexible and can be used in a variety of scenarios. It supports replication, allowing data to be copied to multiple Redis instances for high availability and fault tolerance. Additionally, Redis provides support for Lua scripting, transactions, and pub/sub messaging, making it a versatile tool for developers. The Redis community is active and continually contributes to its development, ensuring that it remains a cutting-edge solution for modern data management needs.
REDIS runs on TCP port 6379 and is official IANA port.Security risk
If port 6379 is open and Redis is running, it can be a significant security risk if not properly secured. Unauthorized access could lead to data breaches, data corruption, or denial of service attacks. It is crucial to implement strong authentication, encryption, and network security measures to protect Redis instances.
In our UFW tutorial you can follow instructions how you can configure UFW to close port 6379. Use StackChanges to monitor if the REDIS port is closed and stays closed. StackChanges will send an alert if port 6379 is open again.