Question

To hopefully save on system resources I want to run user requests through the same Chromium version in Puppeteer.

If a user submits a form on my site which calls Puppeteer, and Chromium is already running how can I use the same Chromium instance up to a maximum of 4 tabs.

If there are more than 4 tabs open in the Chromium instance I then want to launch a new Chromium instance.

How can I achieve this?? Would I need to store the browserWSEndpoint of the Chromium instance to a file and then retrieve it every time a new user submits a request? (using browserWSEndpoint with puppeteer.connect()).

If I have to do it this way, lets say there's 2 chromium browsers active. The first most recent browser has the maximum four open tabs so I could not use this browser. I would then check the next browserWSEndpoint and if there are less than 4 open tabs, create a new page. If not launch a new browser.

Does that sound OK??

Answer 1

您可以使用Lambda来节省成本，如果要使用API网关，请确保避免30秒钟的Lambda超时。

https://github.com/alixaxel/chrome-aws-lambda

NodeJS

const chromium = require('chrome-aws-lambda');

exports.handler = async (event, context) => {
  let result = null;
  let browser = null;

  try {
    browser = await chromium.puppeteer.launch({
      args: chromium.args,
      defaultViewport: chromium.defaultViewport,
      executablePath: await chromium.executablePath,
      headless: chromium.headless,
    });

    let page = await browser.newPage();

    await page.goto(event.url || 'https://example.com');

    result = await page.title();
  } catch (error) {
    return context.fail(error);
  } finally {
    if (browser !== null) {
      await browser.close();
    }
  }

  return context.succeed(result);
};

Puppeteer: multiple user requests to the same Chromium instance

1 个答案: