分布式锁 分段锁 基于 memcached redis zookeeper (3种资源模式) 实现

Example

//对 segmentation_object 这个字符串加锁
ObjectLock objectSegmentationLock = new ObjectLock("segmentation_object");

try {

    objectSegmentationLock.lock();
    dosomething();

} catch (Exception e) {
    e.printStackTrace();
} finally {

    objectSegmentationLock.releaseLock();
}


try {
    //尝试加锁直到5秒后超时加锁失败
    if(objectSegmentationLock.tryLock(5000)) {
        dosomething();
    }

} catch (Exception e) {
    e.printStackTrace();
} finally {

    objectSegmentationLock.releaseLock();
}


CodeLock codeLock = new CodeLock();

try {
    //直接对以下代码（dosomething）进行阻塞加锁直到获得锁
    codeLock.lock();
    dosomething();

} catch (Exception e) {
    e.printStackTrace();
} finally {

    codeLock.releaseLock();
}

try {
    //直接对以下代码（dosomething）尝试加锁 直到5秒后超时加锁失败
    if(codeLock.tryLock(5000)) {
        dosomething();
    }

} catch (Exception e) {
    e.printStackTrace();
} finally {

    codeLock.releaseLock();
}

源码

https://github.com/lichao4Java/distributed-lock