title: PHP: Parallel cURL Performance - RollingCurl vs ParallelCurl
body: <p>I have a large amount of cURL requests to process. There are a couple libraries I've found to help process them parallel, the main ones are RollingCurl ( <a href="http://code.google.com/p/rolling-curl/" rel="nofollow">http://code.google.com/p/rolling-curl/</a> ) and Parallel Curl ( <a href="https://github.com/petewarden/ParallelCurl" rel="nofollow">https://github.com/petewarden/ParallelCurl</a> ).</p>
  
  <p>Does anyone have experience with these libraries, and if so do you know which one performs better? </p>
  
  <p>Thanks!</p>
  
  <p>UPDATE: For anyone who may stumble upon this later, if you're using Rolling Curl's group functionality it seems to break when handling a large number of requests (50k+)</p>