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. Dealing with file downloads in puppeteer browserless docs 1. Install puppeteer Download of Chromium during install fails with ERRINVALIDPROTOCOL stale label on OrKoN added confirmed and removed unconfirmed labels on Jan 12 OrKoN added unconfirmed and removed confirmed labels on Jan 12 Sign up for free to join this conversation on GitHub. 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. We can fork multiple child_proces in Node.
Our CPU cores can run multiple processes at the same time. Easily automate your workflows, scrape websites, and more. Puppet is the open-source no-code browser-based automation tool, powered by Google Chrome. It requires zero setup and comes bundled with the Chromium version most suited to it. 💡 Learn more about the single threaded architecture of node here No-code, natural language web automation. Puppeteer is a headless Node library that provides a high level API for controlling Chromium or Chrome over the DevTools protocol. 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. Dealing with file downloads in puppeteer browserless docs 1.
It can only execute one process at a time. The browser is downloaded to the HOME/.cache/puppeteer folder by default. You see Node.js in its core is a single-threaded system. Puppeteer is a Node.js library which provides a high-level API to control. 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.
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