Ask HN: People getting a “Hug of Death” from a “Show HN” Post, what was it like?

We often see folks post their creations here. Often, it goes viral, and the website in question goes down. I'm interested in hearing from folks who experienced this, and what their post-mortem taught them to do differently/better next time. Also, numbers would be nice, but if you don't have specifics, please don't let that stop you from sharing. Thanks!