How to integrate Lettuce redis in SpringBoot

1. Add dependencies

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-pool2</artifactId>
    </dependency>

2. Add redis configuration

spring:
 redis:
   host: ****
   password:****
   port: 6379
 # 连接超时时间（毫秒）
   timeout: 1000
 # Redis默认情况下有16个分片，这里配置具体使用的分片，默认是0
   database: 0
 # 连接池配置
   lettuce:
    pool:
 # 连接池最大连接数（使用负值表示没有限制） 默认 8
     max-active: 8
 # 连接池最大阻塞等待时间（使用负值表示没有限制） 默认 -1
     max-wait: -1
 # 连接池中的最大空闲连接 默认 8
     max-idle: 8
 # 连接池中的最小空闲连接 默认 0
     min-idle: 0

3. Implement logic

@Autowired
  private StringRedisTemplate stringRedisTemplate;
  @Override
  public String testRedis(){
    ExecutorService executorService = Executors.newFixedThreadPool(1000);
    IntStream.range(0, 1000).forEach(i -> executorService.execute(() -> stringRedisTemplate.opsForValue().increment("lcl",1)));
    System.out.println("lcl1=============" + stringRedisTemplate.opsForValue().get("lcl"));
    stringRedisTemplate.opsForValue().set("lcl1","val1");
    String val1 = stringRedisTemplate.opsForValue().get("lcl1");
    System.out.println("lcl1=============" + val1);
    String key = "redis:test:demo1";
    User user = new User();
    user.setId(100L);
    user.setUsername("u2");
    user.setPassword("p2");
    stringRedisTemplate.opsForValue().set(key, JSON.toJSONString(user));
    String valUser = stringRedisTemplate.opsForValue().get(key);
    System.out.println("redis:test:demo1=============" + valUser);
    User getUser = JSON.parseObject(valUser, User.class);
    System.out.println("redis:test:demo1=============" + getUser.getUsername()+ "========" + getUser.getPassword());
    return null;
  }

Test results:

Since redis has String, list, set, zset, hash, geo, etc. type, so when using it, more than just the opsForValue() method is used. The specific corresponding methods are as follows:

• opsForValue: Corresponds to String (string)

• opsForZSet: Corresponds to ZSet (ordered set)

• opsForHash: Corresponds to Hash (Hash)

• opsForList: Corresponds to List (list)

• opsForSet: Corresponds to Set (set)

• opsForGeo: Corresponds to GEO (geographic location)

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