redis cluster集群删除指定模糊redisKey的信息
**public int deleteRedisKey(String key){
AtomicReference<Integer> result = new AtomicReference<>(0);
busnessLogger.info("开始删除指定业务的模糊Key,deleteRedisKey:{}",key);
try{
Set<HostAndPort> haps = new HashSet<HostAndPort>();
if(StringUtils.isNotBlank(redisClusterAddress)){
String[] addresses = redisClusterAddress.split(",");
for (String address : addresses) {
String[] ipAndPort = address.split(":");
HostAndPort hap = new HostAndPort(ipAndPort[0], Integer.parseInt(ipAndPort[1]));
haps.add(hap);
}
}else{
busnessLogger.error("加载融资租赁Redis集群地址是空的!");
throw new Exception("加载融资租赁Redis集群地址是空的!");
}
GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
genericObjectPoolConfig.setMaxWaitMillis(Long.valueOf(genericObjectPoolConfigMaxWaitMillis));
genericObjectPoolConfig.setMaxTotal(Integer.valueOf(genericObjectPoolConfigMaxTotal));
genericObjectPoolConfig.setMinIdle(Integer.valueOf(genericObjectPoolConfigMinIdle));
genericObjectPoolConfig.setMaxIdle(Integer.valueOf(genericObjectPoolConfigMaxIdle));
JedisCluster jedisCluster = new JedisCluster(haps, Integer.valueOf(jedisClusterTimeout),Integer.valueOf(jedisClusterTimeout), Integer.valueOf(jedisClusterTimeoutMaxAttempts), passWd,genericObjectPoolConfig);
jedisCluster.getClusterNodes().values().stream().forEach(pool->{
String scanCursor = "0";
List<String> scanResult = new ArrayList<>();
do {
Jedis resource = pool.getResource();
ScanResult<String> scan = resource.scan(scanCursor, new ScanParams().match(key).count(1000000));
scanResult = scan.getResult();
for (String delete:scanResult) {
jedisCluster.del(delete);
result.getAndSet(result.get() + 1);
}
scanCursor = scan.getStringCursor();
resource.close();
} while (!scanCursor.equals("0") && !scanResult.isEmpty());
// Jedis jedis = pool.getResource();
// ScanResult<String> scanResult = jedis.scan("0",new ScanParams().match(key));
// while (!scanResult.isCompleteIteration()) {
// long t1 = System.currentTimeMillis();
// List<String> list = scanResult.getResult();
// for (String delete:list) {
// jedis.del(delete);
// result.getAndSet(result.get() + 1);
// }
// scanResult = jedis.scan(scanResult.getCursor(),new ScanParams().match(key));
// long t2 = System.currentTimeMillis();
// }
});
jedisCluster.close();
}catch (Exception e){
busnessLogger.error("加载前置征信平台Redis集群异常!", e);
throw new RuntimeException(e.getMessage());
}
busnessLogger.info("指定业务Key删除的个数：{}",result.get());
return result.get();
}**
这里面有两个需要特别注意：
1.ScanParam里面的count要设置大一点。
2.如果遍历做删除的时候，如果是集群，要用jedisCluster去删除。否则会删除不了。
