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Spring Boot Redis Sample

Install Redis Server

Mac

# install
brew install redis
# start redis server
redis-server &
# CLI
redis-cli

Ubuntu

# install
sudo apt-get update
sudo apt-get install redis-server
# start redis server
redis-server
# CLI
redis-cli

Spring Redis Configuration

Cluster Config

Redis Cluster Settings

  • mkdir redis-cluster & create six sub folders in it

  • copy all redis bin/* files & redis.conf to these sub folders

  • copy redis src redis-trib.rb to redis-cluster folder

  • modify each redis.conf of the sub folders
    Notice bellow parameters:
    port 6379 # change the port to the new one. e.g. 7001 ~ 7006
    daemonize no # change it to yes to run it as daemon
    cluster-enabled yes # unmark it to enable cluster
    IMPORTANT! cluster-config-file nodes-6379.conf # modify the nodes-6379.conf to nodes-xxx.conf. e.g. nodes-7001.conf, or it cannot run more than one redis server since the node.conf already in use.
    pidfile /var/run/redis_6379.pid # change the 6379 to your port. e.g. 7001, not MUST

  • run the command ./redis-server ./redis.conf in all 6 sub folders

  • then exec the command ./redis-trib.rb create --replicas 1 IP:PORT1 IP:PORT2 IP:PORT3 IP:PORT4 IP:PORT5 IP:PORT6 in redis-cluster folder to create the redis cluster, it will show logs.

Spring Redis Cluster Config

  1. Cluster Property

    • add host:port cluster info into application-xxx.yaml
    • create ClusterProperties class to get the config info above

  2. RedisClusterConfig

    • Autowired the ClusterProperties to get the whole host:port config info
    • Create clusterConnection Bean which return RedisConnectionFactory

  3. RedisClusterTest

    • At first add the SpringBootTest annotation
    • Then add ContextConfiguration annotation
    • Add ActiveProfiles to choose the application-env.yaml, env like test/dev/prod/beta
    • Autowired RedisConnectionFactory clusterConnection
    • setup the RedisClusterConnection redisClusterConnection & Gson gson
    • Check the redisClusterConnection methods

Repositories

Redis Repositories requires at least Redis Server version 2.8.0.

Entity
@RedisHash("people")  
@NoArgsConstructor
@Id add id member
Redis Config
@EnableRedisRepositories
repository
extends CrudRepository<Object, String>
converter
@ReadingConverter
@WritingConverter
@Override convert

Messaging(Pub/Sub)

Receiver
implement receiveMessage callback
Publisher
init RedisTemplate<?, ?> redisTemplate
call redisTemplate.convertAndSend(channel, message) to send message
MessageListener
add Receiver bean
add MessageListenerAdapter bean which construct by Receiver bean and receiveMessage callback
add RedisMessageListenerContainer bean which construct RedisConnectionFactory instance & MessageListenerAdapter bean