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I've been wondering myself, if CloudFlare helps against DDoS attacks when the page is dynamically generated for each user. For static pages it should help.

• joshmcmillan 13y ago
  If the attack is working by essentially flooding Basecamp's network links until they reach capacity, then yes, it could. CloudFlare could simply filter out malicious traffic and only pass on legit requests to Basecamp. That's obviously very much dependent on the kind of attack and whether CloudFlare has more network capacity than Basecamp (which I would imagine is highly likely).
• singlow 13y ago
  CloudFlare does more than just caching. Even on non-cached pages it can filter and otherwise mitigate traffic that it has identified as malicious.
  • kalleboo 13y ago
    Correct, many times I've had to fill out a captcha to load a CloudFlare-protected page.
    • xxdesmus 13y ago
      The sensitivity/frequency by which the captcha challenge page gets displayed is dependent on the security settings selected by the website owner.