scraper
puppeteer-cluster
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scraper | puppeteer-cluster | |
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12 | 5 | |
98 | 3,077 | |
- | - | |
0.0 | 6.4 | |
about 1 year ago | about 1 month ago | |
TypeScript | TypeScript | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
scraper
- Most Used Individual JavaScript Libraries - jQuery still leads
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Most Used JavaScript Libraries (percentage) - June 2022 [OC]
Additional info and source code for generating the dataset, summarizing it and rendering the chart are available at https://github.com/get-set-fetch/scraper/tree/main/datasets/javascript-libs-from-top-1mm-sites
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How to collaborate on web scraping?
Store the scrape progress (to-be-scraped / in-progress / scraped / in-error URLs) in a database shared by all participants and scrape in parallel with as many machines as the db load permits. Got a connection timeout / IP is blocked on one machine ? Update the scrape status for the corresponding URL and let another machine retry it. https://github.com/get-set-fetch/scraper (written in typescript) follows this idea. Using Terraform from a simple config file you can adjust the number of scraper instances to be deployed in cloud at startup and during the scraping process. In benchmarks a PostgreSQL server running on a DigitalOcean vm with 4vCPU, 8GB memory allows for ~2000 URLs to be scraped per second (synthetic data, no external traffic). From my own experience this is almost never the bottleneck. Obeying robots.txt crawl-delay will surely put you under this limit. Disclaimer: I'm the npm package author.
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How to serve scrapped data?
Written in typescript https://github.com/get-set-fetch/scraper stores scraped content directly in a database (sqlite, mysql, postgresql). Each URL represents a Resource. You can implement your own IResourceStorage and define the exact db columns you need.
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How to scrape entire blogs with content?
You can use https://github.com/get-set-fetch/scraper with a custom plugin based on the mozilla/readability as detailed in https://getsetfetch.org/node/custom-plugins.html (extracting news article content). I think it's a close match to your use case.
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A simple solution to rotate proxies or how to spin up your own rotation proxy server with Puppeteer and only a few lines of JS code
I'm currently implementing concurrency conditions at project/proxy/domain/session level in https://github.com/get-set-fetch/scraper . On each level you can define the maximum number of requests and the delay between two consecutive requests.
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Web scraping content into postgresql? Scheduling web scrapers into a pipeline with airflow?
If you're familiar with nodejs give https://github.com/get-set-fetch/scraper a try. Scraped content can be stored in sqlite, mysql or postgresql. It also supports puppeteer, playwright, cheerio or jsdom for the actual content extraction. No scheduler though.
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Web Scraping 101 with Python
I'm using this exact strategy to scrape content directly from DOM using APIs like document.querySelectorAll. You can use the same code in both headless browser clients like Puppeteer or Playwright and DOM clients like cheerio or jsdom (assuming you have a wrapper over document API). Depending on the way a web page was fetched (opened in a browser tab or fetched via nodejs http/https requests), ExtractHtmlContentPlugin, ExtractUrlsPlugin use different DOM wrappers (native, cheerio, jsdom) to scrape the content.
[1] https://github.com/get-set-fetch/scraper/blob/main/src/plugi...
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What is your “I don't care if this succeeds” project?
https://github.com/get-set-fetch/scraper - I've been working (intermittently :) ) on a nodejs or browser extension scraper for the last 3 years, see the other projects under the get-set-fetch umbrella. Putting a lot more effort lately as I really want to do those Alexa top 1 million analysis like top js libraries, certificate authorities and so on. A few weeks back I've posted on Show:HN as you can do basic/intermediate? scraping with it.
Not capable of handling 1 mil+ pages as it still limited to puppeteer or playwright. Working on adding cheerio/jsdom support right now.
puppeteer-cluster
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Puppeteer in Node.js: Common Mistakes to Avoid
If urlsToScrape happens to be large enough, the memory and processor load from spawning dozens or hundreds of pages can bring a system down quickly. Consider puppeteer-cluster.
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Looking for something and I'm not sure what it would be called.....
You could set up a service with something like playwright, puppeteer puppeteer-cluster, browserless, to access the service internally and serve screenshots of it to the outside user. You'd have to set up probably some kind of web service with the appropriate routes.
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Building Unlighthouse: Open-Source Package For Site-wide Google Lighthouse scans
To make Unlighthouse fast, we combined this lighthouse binary with the package puppeteer-cluster, which allows for multi-threaded lighthouse scans.
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Redis with puppeteer for web scraping
https://github.com/thomasdondorf/puppeteer-cluster is doing queue-like mechanism but it is not using redis.
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How to reuse puppeteer browser?
I've used this library: Puppeteer cluster
What are some alternatives?
playwright-recaptcha-solver - ReCaptcha V2 solver for Playwright
rendertron - A Headless Chrome rendering solution
playwright-python - Python version of the Playwright testing and automation library.
puppeteer - Node.js API for Chrome
pyppeteer - Headless chrome/chromium automation library (unofficial port of puppeteer)
deno-puppeteer - A port of puppeteer running on Deno
Twitch-Drops-Bot - A Node.js bot that will automatically watch Twitch streams and claim drop rewards.
vitest - Next generation testing framework powered by Vite.
vopono - Run applications through VPN tunnels with temporary network namespaces
ing-au-login - Login to your ING Australia bank account using puppeteer
listudy - Listudy - chess training server
autoprotonvpn - 1-click anon protonvpn account