![]() ![]() 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. 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. It can only execute one process at a time. Puppeteer documentation website (old website for versions <15.2.0) Use case-driven examples for using Puppeteer and headless chrome. You see Node.js in its core is a single-threaded system. Library that provides an API to replay and stringify recordings created using Chrome DevTools Recorder. However, if you have to download multiple large files things start to get complicated. (experimentally supports python 3.5) Install by pip from PyPI: python3 -m pip install pyppeteer Or install latest version from github: python3 -m pip install -U git+ Usage Note: When you run pyppeteer first time, it downloads a recent version of Chromium (100MB). In this next part, we will dive deep into some of the advanced concepts. ![]()
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