import redis.clients.jedis.Jedis; public class DistributedLock { public static void main(String[] args) { Jedis jedis = new Jedis("localhost"); // 尝试获取锁 String lockKey = "lock:key"; long acquired = jedis.setnx(
void lock(String lockname, long leaseTime, TimeUnit unit) { String key = DISTRIBUTED_LOCK_FLAG + lockname; RLock lock = getRedissonManager().getLock(key); //lock提供带timeout参数,timeout结束强制解锁,防止死锁 :1分钟 lock.lock(leaseTime, unit); } /** * Redisson分布式锁 根据name进行解锁操...
🤔 Redis 真的是个全能选手,它的应用场景广泛得让人惊叹。以下是一些你可能不知道的 Redis 用法: 缓存(Caching) 💾 分布式锁 (Distributed Lock) 🔒 计数器 (Counting) 🔢 消息队列 (Message Queue) 📦 发布/订阅 (Pub/Sub) 📢 地理位置存储与查询 (Geospatial Data) 🌍 限流(Rate Limiting) 🚧...
Improvement - RedissonLock optimization Fixed - RedissonLock thread-safety Fixed - master/slave auth using Sentinel servers Fixed - slave down handling using Sentinel servers ###03-Jul-2014 - version 1.1.2 released Improvement - RedissonSet.iterator implemented with sscan Improvement...
Improvement - RedissonLock optimization Fixed - RedissonLock thread-safety Fixed - master/slave auth using Sentinel servers Fixed - slave down handling using Sentinel servers ###03-Jul-2014 - version 1.1.2 released Improvement - RedissonSet.iterator implemented with sscan Improvement...
Distributed lock implementation In a distributed scenario, locks in a stand-alone environment cannot be used to synchronize processes on multiple nodes. You can use the SETNX command that comes with Redis to implement distributed locks. In addition, you can also use the official RedLock distributed...
1) CAS/CAD High-Performance Distributed Lock The write command in Redis string has a parameter called NX, which specifies that a string can be written if no string exists. This is naturally locked. This feature facilitates the lock operation. By taking a random value and setting it with the...
To set maxTotal properly, you need to consider the following factors: Issue: 20190805 35 ApsaraDB for Redis Best Practices / 8 JedisPool optimization • The Redis concurrent connections required by the business. • How long it takes for the client to execute the command. • The limit...
调用API: wiki.xsx.core.handler.RedisLockHandler handler = wiki.xsx.core.util.RedisUtil.getRedisLockHandler(); handler.getLock(String name); ...
根据上述思路,参考JDK的ReentrantLock锁,实现可重入锁,我们需要两个变量去记录数据,一个int类型的变量count用于记录重入次数,一个String类型的变量lockId用于记录得到锁的线程信息(可以是线程id,或者直接用线程对象),获取锁的时候,先判断锁是否存在,如果不存在,则得到锁,将count设置为1,并记录lockId。后续如果嵌套调用...