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• Tools
  • ab / ApacheBench (by Apache) ← CLI
    
    • 2013.11.25 - Digital Ocean - How To Use ApacheBench To Do Load Testing on an Ubuntu 13.10 VPS
      
      • Obviously, these results do not reflect realistic server performance. HTTP is just one piece of the puzzle. A slow templating engine and/or database will drag these numbers down significantly. Still, it gives you a quick ballpark figure for comparison.
  • The Grinder
  • httpperf ← CLI / Linux(?)
  • httpress
  • http_load
  • JMeter (by Apache)
  • LoadRunner (by HP)
  • OpenSTA ← Looks really old...
  • siege
  • SoapUI ← One of the more-attractive landing pages (shallow, I know)
  • tourbus
  • WebLOAD
  • weighttp
• StackOverflow questions on this topic

CDNs

Cache-hit ratios

• https://www.fastly.com/blog/truth-about-cache-hit-ratios
  • A "hit" is when the CDN serves a resource, and a "miss" is a resource that your server needs to serve.
  • Summary: Most CDNs consider it a "hit" even if they don't serve the resource from an edge-node-server closest to the user, but instead from a parent node somewhere further away.  This makes their CHRs less useful for understanding the performance benefit that the CDN is providing.  Their CHRs are still useful for getting a sense of the server load that the CDN is saving you, though.