前端 Worker 池与任务调度实践：MessageChannel/Task Queue/优先级

前端 Worker 池与任务调度实践概述多 Worker 并行处理重任务，主线程仅负责调度与交互，避免长任务阻塞。Worker 池实现（示意）class WorkerPool {

private workers: Worker[] = []

private queue: Array<{ data: any; priority: number; resolve: (v: any) => void }> = []

constructor(size: number, script: string) {

for (let i = 0; i < size; i++) this.workers.push(new Worker(script, { type: 'module' }))

}

submit(data: any, priority = 0) {

return new Promise((resolve) => {

this.queue.push({ data, priority, resolve })

this.queue.sort((a, b) => b.priority - a.priority)

this.dispatch()

})

}

private dispatch() {

const idle = this.workers.pop()

const task = this.queue.shift()

if (!idle || !task) return

idle.onmessage = (e) => { task.resolve(e.data); this.workers.push(idle); this.dispatch() }

idle.postMessage(task.data)

}

}

MessageChannel 协同const channel = new MessageChannel()

channel.port1.onmessage = (e) => console.log('result', e.data)

worker.postMessage({ task: 'process' }, [channel.port2])

技术参数与验证INP 改善；重任务吞吐提升；主线程帧率稳定。注意事项任务大小粒度控制；避免过度线程化；与优先级策略协同。---发布信息：已发布 · 技术验证 · 阅读 36 分钟 · CC BY-SA 4.0