在redission 2.9.0版本之前是有BUG，在实现下面代码时，第一次是成功的，但是在第二次就会失败：

RedissonClient client;//client参考别的demo

RMapCache mapCache = client.getMapCache("nameSpace");

mapCache.putIfAbsent("redisKey", 0, 1, TimeUnit.DAYS);//当不存在redisKey时，就放置这个redis，存在则不放置

在redission 2.9.0(3.4.1)版本之后修复BUG，多次操作是成功的：

RedissonClient client = RedissonHolder.getClient();//具体实现参考别的demo

RMapCache mapCache = client.getMapCache("nameSpace",IntegerCodec.INSTANCE);

String redisKey = channel + "-" + userId;

mapCache.putIfAbsent("redisKey", 0, 1, TimeUnit.DAYS);

logger.info("获取redis计数器：{}", redisKey);

int incr = mapCache.addAndGet(redisKey, 1);//加1并获取计算后的值

参考pom:

org.redisson

redisson

3.4.1

可参考redis demo：

import java.io.IOException;

import java.io.InputStream;

import java.util.ResourceBundle;

import org.redisson.Redisson;

import org.redisson.api.RedissonClient;

import org.redisson.config.Config;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class RedissonHolder {

private static final Logger LOGGER = LoggerFactory.getLogger(RedissonHolder.class);

private static final RedissonHolder HOLDER = new RedissonHolder();

private RedissonClient redisson;

private RedissonHolder() {

String location = ResourceBundle.getBundle("redisson").getString("redisson.json.location");

InputStream inputStream = RedissonHolder.class.getClassLoader().getResourceAsStream(location);

Config config = null;

try {

config = Config.fromJSON(inputStream);

} catch (IOException e) {

LOGGER.error("获取Redisson配置文件失败", e);

}

this.redisson = Redisson.create(config);

}

public static RedissonClient getClient() {

return HOLDER.redisson;

}

}

redisson.properties(等号后面全部换成一行) :

redisson.json.location ={"singleServerConfig":{"idleConnectionTimeout":10000,

"pingTimeout":1000,

"connectTimeout":10000,

"timeout":5000,

"retryAttempts":5,

"retryInterval":1500,

"reconnectionTimeout":3000,

"failedAttempts":3,

"password":"root",

"subscriptionsPerConnection":5,

"clientName":null,

"address":"redis://my.redis.com:6379",

"subscriptionConnectionMinimumIdleSize":1,

"subscriptionConnectionPoolSize":50,

"connectionMinimumIdleSize":10,

"connectionPoolSize":64,

"database":0,

"dnsMonitoring":false,

"dnsMonitoringInterval":5000

},

"threads":0,

"nettyThreads":0,

"codec":null,

"useLinuxNativeEpoll":false

}

基于 springboot 的 redisTemplate计数器

redisTemplate基本配置参考 http://www.cnblogs.com/tietazhan/p/7479585.html

然后就可以直接使用内部函数

redisTemplate.opsForHash().increment(H var1, HK var2, long var3)；

第一个为缓存key值，第二个为hashKey值，第三个为增量值。