First I not know much about nodejs multi thread and multi process. But i have a idea and i'm not sure the multi-thread does achieve it.

There is a api, when call it, i will generate a list, the store all web links, the list has a big length, so i split the list like this:

const list = [1, 2, 4, 5, 6, ..., 1000]
const splitList= [[1, 2, 3], [...], ,[...], [998, 99, 1000]]

Then begin crawl the links:

let i = 0
while (i < splitList.length) {
  await Promise.all(splitList[i].map(async link => {
    crawl(link)
  }))
  i++
}

The idea is:

Maybe This way sounds crazy, but if it works, Will save much time.