log( 'CHILD: url received from parent process', url) Ĭonst browser = await puppeteer. The code snippet below is a simple example of running parallel downloads with Puppeteer.Ĭonst downloadPath = path. 💡 If you are not familiar with how child process work in Node I highly encourage you to give this article a read. We can combine the child process module with our Puppeteer script and download files in parallel. Child process is how Node.js handles parallel programming. Any number of plugins can be added through e() const puppeteer require (' puppeteer-extra '). ('./download ') // puppeteer-extra is a drop-in replacement for puppeteer, // it augments the installed puppeteer with plugin functionality. We can fork multiple child_proces in Node. We choose to use 3 extra packages aside puppeteer: puppeteer-extra. Our CPU cores can run multiple processes at the same time. 💡 Learn more about the single threaded architecture of node here Therefore if we have to download 10 files each 1 gigabyte in size and each requiring about 3 mins to download then with a single process we will have to wait for 10 x 3 = 30 minutes for the task to finish. It can only execute one process at a time. You see Node.js in its core is a single-threaded system. However, if you have to download multiple large files things start to get complicated. In this next part, we will dive deep into some of the advanced concepts. I tried installing puppeteer-extra and setting the downloads path: const puppeteer = require('puppeteer-extra') Ĭonst /download.zip` Ĭonst filePath = fs.Const browser = await puppeteer. My script runs to the end, but doesn't seem to actually download any files. where downloading an additional Chromium binary is unnecessary.

The reason I'm using Puppeteer is because I can't find a supported API to get this data (if there is one happy to try it) Ace your interviews with this free course, where you will practice confidently tackling. This is the site I'm trying to download from

I've been making incremental progress, but I'm fairly stumped at this point.

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