Spring Data Redis

The sample project to show a problem of storing collections with null elements in Spring Redis Data.

When we save the java nullable object as null, Redis just skips it, because it hasn't an equivalent for NULL. On saving collections with some nulls, method will be break on the first null element in a collection. It's okay for NULL-ending collections, but we're missing elements with NULL-leading or NULL in a middle collections.

Line of the code that break write elements on the first null: https://github.com/spring-projects/spring-data-redis/blob/master/src/main/java/org/springframework/data/redis/core/convert/MappingRedisConverter.java#L705

Commit that adding this feature: https://github.com/spring-projects/spring-data-redis/commit/2492fbe332b7565e0724b8f7ec6c62f5d3178b25#diff-b71f4f4366952781ed005f6224ff7d5dR511

Project is based on: https://github.com/eugenp/tutorials/tree/master/persistence-modules/spring-data-redis

Relevant Articles:

• Introduction to Spring Data Redis
• PubSub Messaging with Spring Data Redis
• An Introduction to Spring Data Redis Reactive

Build the Project with Tests Running

mvn clean install

Run Tests Directly

mvn test