redis distributed lock

Original: http://mp.weixin.qq.com/s?__biz=MzAwMDU1MTE1OQ==mid=208733458idx=1sn= 691bfde670fb2dd649685723f7358feascene=1key= C76941211a49ab58cb17c68ecaeeda0f1c083d9508a0f6629461fff9025fd87de4706bd9c1730e0ddbab70568b34b16aascene=0 uin=mjk1odmyntyymg%3d%3ddevicetype=imac+macbookpro9%2c2+osx+osx+10.10.3+build (14D136) version= 11020012pass_ticket=bylvrokfz4zuu0zae%2bozucg34yi2tnwf7ivxwu5vlj8kujwfpajt7wdhjqeo1gclThe content of this share consists of five major parts:

an update is received as a replacement, these requests can be successfully executed. 2. restrictions on concurrent access The use of file locks can limit concurrent access. However, in a distributed architecture, the use of file locks cannot guarantee the limit on concurrent access to multiple servers. Redis is an open-source log-type and Key-Value database written in ansi c language that supports network,

First of all, to say what is a distributed lock, simply speaking, distributed lock is in the distributed concurrency scenario, the ability to implement multi-node code synchronization mechanism. From the implementation point of view, there are two main ways: based on the

Back to CatalogThere are many Redis client drivers, such as Servicestack.redis, Stackexchange.redis and so on, here I use Servicestack.redis as an example, introduce the way to implement concurrent lock in Redis driver, concurrency is the simultaneous access and operation of the same resources, and for Redis, if you mu

Abstract: Share cow original,zookeeper use,zookeeper lock in the actual project development is still very common, here we introduce zookeeper the use of distributed locks, and how we Zookeeper the principle of distributed locks. Zookeeper node understanding. What is the use of zookeeper distributed locks? The first th

()); if (Stringutils.isnotblank (Redssionproperties.getpassword ())) {Serverconfig.setpassword (RedssionPropert Ies.getpassword ()); } return Redisson.create (config); }/** * Assemble the locker class and inject the instance into the redisslockutil * * @return * * * @Bean distributedlocker Distributedlocker (Redis Sonclient redissonclient) {distributedlocker locker = new Redissondistributedlocker (); Locker.setredissonclient (

Redisson is a project for implementing distributed locks in the Java language recommended by the Redis website. Of course, Redisson is far more than distributed locks, and includes some other distributed architectures. For details, please visit: Https://github.com/mrniko/redisson/wikiRedisson supports 4 ways to link Re

1. Distributed lock Distributed locks are generally used in distributed systems or in multiple applications to control the execution of the same task or the order in which the task is executed. In the project, multiple Tomcat applications were deployed, and when a timed task was executed, it was possible to perform th

1. Demand Analysis The author's project has a check-in function: A user can only sign in once a day, but in the case of concurrency, a user may be able to check in several times a day, in this case, the first thing I think of is the use of Redis distributed lock to solve the problem 2.redis

Original: http://blog.csdn.net/l1028386804/article/details/735238101. Can be re-entered lock (Reentrant lock)Redisson's distributed reentrant lock Rlock Java object implements the Java.util.concurrent.locks.Lock interface, and also supports automatic expiration unlocking.[Java]View PlainCopy Public void Testreentra

default, but for a single instance failure, the user needs to determine the mechanism of the processing itself, and the follow-up is pending, but Redis Codis provides convenient support.Author: AndonSource: Http://www.cnblogs.com/Andon_liuAbout the focus on Microsoft Platform Project architecture, management. Familiar with design patterns, domain drivers, architecture design, agile development and project management. is mainly engaged in ASP, Wcf/web

Distributed locks can be implemented using Redis's SETNX command, which is described below. setnx Command Introduction command Format Setnx Key value Set the value of key to value when and only if key does not exist.If the given key already exists, then SETNX does not do any action.Setnx is a shorthand for the set if not exists. return value Returns an integer, specifically-1, when the value of key is set-0, when the value of key is not set example

The guava Cache used in the previous article, if not available in the cluster, requires the use of middleware such as Redis, zookeeper to implement distributed locks.Import dependencyDependency packages to add in Pom.xml: Stater-web, STARTER-AOP, Starter-data-redisProperty configurationSpring: redis: 10.211.55.5 #redis