Giter Club home page Giter Club logo

store's Introduction

store

rocketmq的磁盘存储模块,我增加了延时消息

架构

为rocketmq的store模块增加了延时消息,精确到秒,开源自带的延时消息只能支持18个level,改进的延时消息精确到秒没有最大限制。

文档 https://www.cnblogs.com/hzmark/p/mq-delay-msg.html

使用

rocketmq的接口不变,只是timelevel的意义变成了秒为单位的延时值。 生产者:

    public MessageExtBrokerInner buildScheduleMessage(long index) {
		Random rr=new Random();
    MessageExtBrokerInner msg = new MessageExtBrokerInner();
    msg.setTopic("FooBar");
    msg.setTags("TAG1");
    msg.setKeys("Hello"+index);
    msg.setBody(MessageBody);
    msg.setQueueId(Math.abs(QueueId.getAndIncrement()) % QUEUE_TOTAL);
    msg.setSysFlag(0);
    msg.setBornTimestamp(System.currentTimeMillis());
    msg.setStoreHost(StoreHost);
    msg.setBornHost(BornHost);
    msg.setDelayTimeLevel(rr.nextInt(2500)+20);
    return msg;
}

消费者: 消费者照常消费,延时时间到了消息就能消费到。

store's People

Contributors

longlong524 avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.