![]() ![]() ![]() Okay, now that we are all set and configured, let the. log( "CHILD: url received from parent process", url) Ĭonst browser = await puppeteer. Note: This might take a while as Puppeteer will need to download and install Chromium in the background. The code snippet below is a simple example of running parallel downloads with Puppeteer.Ĭonst downloadPath = path. My Puppeteer script is running in headless mode and its timing out. □ If you are not familiar with how child process work in Node I highly encourage you to give this article a read. To skip the download, download into another path, or download a different browser, see Environment variables. We can combine the child process module with our Puppeteer script and download files in parallel. To use Puppeteer in your project, run: npm i puppeteer or 'yarn add puppeteer' When you install Puppeteer, it downloads a recent version of Chromium (170MB Mac, 282MB Linux, 280MB Win) that is guaranteed to work with the API. The application will receive a URL from the user it will generate a PDF with the content of the website and will save the generated file in a defined directory. Child process is how Node.js handles parallel programming. Lets see how to generate PDF files with a C console app using the Puppeteer Sharp NuGet package. We can fork multiple child_proces in Node. 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. Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It can only execute one process at a time. ![]() You see Node.js in its core is a single-threaded system. puppeteer - PuppeteerSharp downloads a csv with headlessfalse. 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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