The service that helped most was ServerOrigin/ethProxy. The cost is about $400/month for "cleaning pipes". You'd need such thing if you have a medium-to-large site. Hostforweb was also quite helpful at the first wave, but since they didn't have a hardware firewall or proxy with anti-DDoS software we had to seek for help elsewhere.

Alex also made a few changes that lowered the load to our server while attack was on it in full. He'd be able to share his observations later.

As for see more Dolphin - some of our views have changed, but I would like to tell about it a little bit later, when we have something to show. For now the plan is to clean out remaining callbacks, make a few more fixes and release 7.0.2. We're also in negotiation about installing 7.0.2 to a large site, which should help us tune Dolphin to work well with a large userbase. That should be the best part of 7.0.3.