Java programming redisson implementation of distributed lock code example

Recently, due to my busy work, I haven't updated my blog for a long time. Today, I'll bring you an article about redisson's implementation of distributed lock. Well, I won't say more. Let's go directly to the topic.

1. Reentrant lock

Redisson's distributed reentrant lock RLOCK Java object implements Java util. concurrent. locks. Lock interface, and also supports automatic expiration and unlocking.

Redisson also provides asynchronous execution methods for distributed locks:

2. Fair lock

Redisson distributed reentrant fair lock also implements Java util. concurrent. locks. A RLOCK object of the lock interface. While providing the automatic expiration unlocking function, it ensures that when multiple redisson client threads request locking at the same time, they are preferentially allocated to the thread that makes the request first.

Redisson also provides asynchronous execution methods for distributed reentrant fair locks:

3. Interlock (multilock)

Redisson's redissonmultilock object can associate multiple RLOCK objects into an interlock, and each RLOCK object instance can come from different redisson instances.

4. Red lock

Redisson's redissonredlock object implements the locking algorithm introduced by redlock. This object can also be used to associate multiple RLOCK objects into a red lock. Each RLOCK object instance can come from different redisson instances.

5. Read write lock (readwritelock)

Redisson's distributed reentrant read / write lock rreadwritelock is implemented in Java util. concurrent. locks. Readwritelock interface. It also supports automatic expiration and unlocking. The object allows multiple read locks at the same time, but there can be at most one write lock.

6. Semaphore

Redisson's distributed semaphore Java object rsemaphore adopts an interface and usage similar to java.util.concurrent.semaphore.

7. Permitexpirablesemaphore

Redisson's expirable semaphore adds an expiration time to each signal based on the rsemaphore object. Each signal can be identified by an independent ID. when released, it can only be released by submitting this ID.

8. Lockout (countdownlatch)

Redisson's countdownlatch Java object rcountdownlatch adopts an interface and usage similar to java.util.concurrent.countdownlatch.

summary

The above is all about the code example of redisson implementing distributed lock in Java programming. Interested friends can refer to: a detailed interpretation of the principle and three implementation methods of distributed lock, a brief discussion on the difference between Oracle RAC and distributed database, a brief analysis of spring cloud and distributed system, and other related topics on this site. I hope it will be helpful to you. If there are deficiencies, please leave a message to point out. Thank you for your support!