log( 'CHILD: url received from parent process', url) Ĭonst browser = await puppeteer. In addition to protection against threats such as OWASP Top 10 and zero-day attacks, you get API protection, bot management, threat analytics, and the latest updates from FortiGuard Labs. FortiWeb Cloud WAF is easy to manage and saves you time and budget. The code snippet below is a simple example of running parallel downloads with Puppeteer.Ĭonst downloadPath = path. Reduce alert fatigue and securely deploy your web apps and APIs on Azure. 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. 💡 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. We can fork multiple child_proces in Node. Our CPU cores can run multiple processes at the same time. Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol. 💡 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.

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