Valkey Overview

One of the key-value stores supported by Spring Data is Valkey. To quote the Valkey project documentation:

“Valkey is an open source (BSD licensed), in-memory data structure store used as a database, cache, message broker, and streaming engine. Valkey provides data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes, and streams.”

Spring Data Valkey provides easy configuration and access to Valkey from Spring applications. It offers both low-level and high-level abstractions for interacting with the store, freeing the user from infrastructural concerns.

Spring Data support for Valkey contains a wide range of features:

• ValkeyTemplate and ReactiveValkeyTemplate helper class that increases productivity when performing common Valkey operations. Includes integrated serialization between objects and values.
• Exception translation into Spring’s portable Data Access Exception hierarchy.
• Automatic implementation of Repository interfaces, including support for custom query methods.
• Feature-rich Object Mapping integrated with Spring’s Conversion Service.
• Annotation-based mapping metadata that is extensible to support other metadata formats.
• Transactions and Pipelining.
• Valkey Cache integration through Spring’s Cache abstraction.
• Valkey Pub/Sub Messaging and Valkey Stream Listeners.
• Valkey Collection Implementations for Java such as ValkeyList or ValkeySet.

Why Spring Data Valkey?

The Spring Framework is the leading full-stack Java/JEE application framework. It provides a lightweight container and a non-invasive programming model enabled by the use of dependency injection, AOP, and portable service abstractions.

NoSQL storage systems provide an alternative to classical RDBMS for horizontal scalability and speed. In terms of implementation, key-value stores represent one of the largest (and oldest) members in the NoSQL space.

The Spring Data Valkey (SDR) framework makes it easy to write Spring applications that use the Valkey key-value store by eliminating the redundant tasks and boilerplate code required for interacting with the store through Spring’s excellent infrastructure support.

Valkey Support High-level View

The Valkey support provides several components.For most tasks, the high-level abstractions and support services are the best choice.Note that, at any point, you can move between layers.For example, you can get a low-level connection (or even the native library) to communicate directly with Valkey.