Ruby vs. JavaScript: Crawler Language Differences

What's the difference between Ruby and JavaScript for crawlers?

The old iron engaged in crawlers must have been entangled in the choice of what programming language, Ruby and JavaScript this pair of enemies have their own way. Let's take the hardcore demand of proxy IP as a ruler, measure the two languages in the end who is more suitable for data collection.

Syntax Sugar Wars: Who Writes Proxy Configurations with Less Effort?

Ruby's Net::HTTP library whole proxies are like eating tofu:

proxy = URI.parse("http://username:password@proxy.ipipgo.com:8000")
Net::HTTP.start('target.com', 80, proxy.host, proxy.port, proxy.user, proxy.password) do |http|
   Here's the request
end

The JavaScript side has to be so convoluted with axios:

const tunnel = require('tunnel');
const agent = tunnel.httpsOverHttp({
  proxy: {
    host: 'proxy.ipipgo.com',
    proxy: { host: 'proxy.ipipgo.com', port: 8000,
    proxyAuth: 'username:password'
  }
}).

axios.get('https://target.com', {httpsAgent: agent})

See what I mean?Ruby directly treats proxy parameters like a mealThe JavaScript has to be the entire tunnel object. If you're using ipipgo's proxy service, it's recommended to just copy the code template they give you to save yourself the trouble.

Performance showdown: who eats agents better?

Real-world testing has found that the asynchronous nature of Node.js does smell better when using ipipgo's short-lived proxy pool. But Ruby's session keeping ability is more robust when dealing with sites that require logins.

Practical set: the correct way to open the proxy IP

As a chestnut, use ipipgo's rotating proxy to catch the price of an e-commerce company:

 Ruby version
require 'net/http'

def fetch_with_proxy(url)
  5.times do |i|
    begin
      proxy = ipipgo.get_proxy This calls the ipipgo API.
      response = Net::HTTP.new(url.host, url.port, proxy.host, proxy.port).get(url.path)
      return response.body
    rescue => e
      puts "Failed {i+1}th attempt, change proxy and retry"
    end
  end
end

The JavaScript version has to watch out for asynchronous traps:

// JavaScript version
async function fetchWithRetry(url) {
  for(let i=0; i<5; i++){
    try {
      const proxy = await ipipgo.getProxy();
      const agent = new HttpsProxyAgent(`http://${proxy.username}:${proxy.password}@${proxy.host}:${proxy.port}`);
      const response = await fetch(url, {agent});
      return response.text();
    } catch (e) {
      console.log(`${i+1}th punt, change armor and fight again`); }
    }
  }
}

Common Rollover Scene QA

Q: What should I do if the agent times out when I use it?
A: eighty percent of the IP quality is not good, change ipipgo exclusive proxy package, there are specialized technical small brother to help you optimize the timeout parameters

Q: HTTPS websites always report errors with certificates?
A: Remember to add rejectUnauthorized: false in the proxy configuration, or use the pre-installed certificate solution provided by ipipgo

Q: How can I tell if the proxy is really in effect?
A: Add a debug logic in the code to print out the actual requested exit IP, and ipipgo's console can also see the real-time usage records

Choose language or service?

In the end.Proxy IP quality is more important than language choice. With ipipgo's high-quality proxy pool, whether it is Ruby's steady and steady, or JavaScript's blitzkrieg method, can be twice as effective with half the effort. Beginners are recommended to use JavaScript to practice first, when the amount of business up to change Ruby to engage in distributed, remember to look for ipipgo to enterprise-level proxy program, their API is compatible with both languages, switching up is not a bother.