repository

• abstraction over database boilerplate code in [spring]
• auto detects the database driver as found in pom.xml
• only need to create a factory
• use [[CrudRepository]] as its the highest level of abstraction
• it builds on top of [[Templates]] and is an higher abstraction level when seen from the point of view of [spring-data]

Repository interface

• [spring-data]
  • Repository
    • JPARepository
    • MongoRepository
    • CrudRepository
    • ReactiveCrudRepository
    • PagingAndSortingRepository

all these interfaces define commonly used methods like findAll, findById, delete

setup

• first up is to define a repository so that [spring] knows you're using one
• definition is straightforward by declaring an interface extending CrudRepository

public interface SomeRepository extends CrudRepository<Domain, Long> {}

redis with repository

• if using [repository] to interact with [redis] you don't need to use [redistemplate] and simplify the code
• so it basically saves you from
  • providing the serializers for the redis or datastore
  • connection factory which although can be autowired from the spring IoC if it's in the classpath
  • no need to worry about the complex type conversions like manually providing setters/getters etc
  • just add [[@RedisHash]]