Redis® (Redis) on Ubuntu 26.04

Redis®* is an open source (BSD licensed), in memory data structure store, used as a database, cache, and message broker. To achieve top performance, Redis works with an in memory dataset, delivering sub millisecond latency that makes it ideal for caching, real time analytics, leaderboards, session stores, message queues, and pub/sub messaging on your AWS workloads.

All Redis data resides in the server main memory, in contrast to databases such as PostgreSQL, Cassandra, and MongoDB that store most data on disk or on SSDs. Depending on your use case, you can persist your data either by periodically dumping the dataset to disk or by appending each command to a disk based log. You can also disable persistence entirely if you just need a feature rich, networked, in memory cache.

Redis supports asynchronous replication, with very fast non blocking first synchronization and auto reconnection with partial resynchronization on net split. It provides high availability via Redis Sentinel and automatic partitioning across nodes with Redis Cluster.

• Application caching: Cache database queries, API responses, and computed results to cut latency and reduce load on your primary database.
• Session storage: Store user sessions for web and mobile applications with fast, shared, in memory access across instances.
• Real time analytics and leaderboards: Use sorted sets, counters, and HyperLogLogs for live rankings, metrics, and unique counts.
• Message broker and queues: Power pub/sub messaging, event streams, and job queues between services.
• Geospatial applications: Index and query location data for proximity search and mapping features.

Performance and data structures

• In memory storage for sub millisecond response times
• Versatile data structures: strings, hashes, lists, sets, sorted sets with range queries, bitmaps, HyperLogLogs, geospatial indexes, and streams
• Keys with a limited time to live
• LRU eviction of keys

Availability and scale

• Built in asynchronous replication
• High availability via Redis Sentinel with automatic failover
• Automatic partitioning across nodes with Redis Cluster
• Fast non blocking first synchronization with partial resync on net split

Persistence and durability

• Point in time snapshots of the dataset to disk
• Append only file (AOF) logging of every write
• Configurable persistence, or disable it for pure caching

Programmability and integration

• Lua scripting
• Transactions
• Pub/Sub messaging
• Supported languages include Java, Python, PHP, C, C++, C#, JavaScript, Node.js, Ruby, R, Go, and many others

• Preconfigured Redis on Ubuntu 26.04, ready to launch.
• Default Redis listening on port 6379 (configurable); SSH on port 22.
• Quick start guidance for editing redis.conf, setting a password, and enabling persistence.
• Recommended instance types and security group settings.

(*) Redis is a registered trademark of Redis Ltd. Any rights therein are reserved to Redis Ltd. Any use by Cloud Infrastructure Services Ltd is for referential purposes only and does not indicate any sponsorship, endorsement or affiliation between Redis and Cloud Infrastructure Services Ltd.