SpringBoot 中间件设计和开发【自研分布式任务调度简易版】
以下是一个简化的分布式任务调度器核心组件的代码示例:
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
public class SimpleDistributedScheduler {
private ConcurrentHashMap<String, Job> jobRegistry = new ConcurrentHashMap<>();
private AtomicLong triggerTime = new AtomicLong(0);
public void registerJob(String jobName, Job job) {
jobRegistry.put(jobName, job);
}
public void deregisterJob(String jobName) {
jobRegistry.remove(jobName);
}
public void trigger(String jobName) {
Job job = jobRegistry.get(jobName);
if (job != null) {
job.execute();
triggerTime.incrementAndGet();
}
}
public long getTriggerCount() {
return triggerTime.get();
}
}
abstract class Job {
private String name;
public Job(String name) {
this.name = name;
}
public String getName() {
return name;
}
public abstract void execute();
}
这个简化版的示例展示了如何使用ConcurrentHashMap
来注册和注销任务,使用AtomicLong
来计数触发次数。Job
是一个抽象类,所有实际的任务都应该继承它并实现execute
方法。这个例子提供了一个基本框架,用于理解分布式任务调度的基本概念。
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