Question 121910 in Redis Question posted in
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Redis – How can I achieve local caching using Spring boot?

I am trying to setup a spring boot application and looking for options to store the small data in the local cache and then this local cache interacts with Redis server which will be on google cloud platform. This local cache can be shared across multiple nodes. I see Redis pro can help to achieve this but that is not free. Is there any open source option I can use? Or any other way I can set this up in Spring boot? How can I set this local cache which syncs up with the central cache? Any suggestions please?

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  1. 0

    You can use Redisson https://github.com/redisson/redisson/wiki/14.-Integration-with-frameworks/#1421-spring-cache-local-cache-and-data-partitioning. It’s available in the Pro version.

    If you would like to implement it by yourself, you would need to implement custom CacheManager that first looks up entries in local cache (implemented likely with something smarter than a HashMap, like Caffeine, if entry not found goes to Redis based CacheManager and then depending on the result puts the data to Caffeine cache.

    For storing data in Redis and making sure all nodes are in sync, you can use Redis Pub/Sub mechanism to notify each connected node to update local cache.

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  2. 0

    Spring Boot for Apache Geode (SBDG) offers client-side caching, or what is commonly referred to as "Near Caching". See here.

    HISTORY

    Apache Geode is an open source software (OSS), In-Memory Data Grid (IMDG) technology, having an Apache 2 License. Indeed, it can be much more than a cache if need be, but fits perfectly well in the caching use case, at any layer in the application architecture (Web, Service, Data).

    The commercial version of Apache Geode is VMware Tanzu GemFire, built on Apache Geode source with support from VMware, if needed. But, to use Apache Geode, is completely free.

    In fact, the original Spring Cache Abstraction was inspired by Costin Leau’s development (original lead & creator) of Spring Data GemFire, which has been replaced by Spring Data for Apache Geode (SDG), to focus on the OSS offering. (See here/alt-here, then here, as well as from Boot).

    SBDG is an extension of SDG to give users of Apache Geode (or alternatively, VMware Tanzu GemFire) a proper and first-class experience using Apache Geode in a Spring context, and specifically with Spring Boot features (e.g. auto-configuration). That is, SBDG is a special extension of Spring Boot catered specifically to Apache Geode to handle a variety of application concerns (like caching) that is owned and maintained by the Spring Team, itself.

    SBDG is even capable of handling several caching patterns in addition to "Near Caching". See the topic of caching in general.

    Finally, SBDG also includes Spring Session for Apache Geode (SSDG) to handle your Web, HTTP Session state caching concerns independent of you Web container (e.g. Tomcat) using Apache Geode as the caching provider for the HTTP Session state. It is, of course, built on Spring Session core (see here).

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