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The bottleneck is always. The. Database.

Unless you're working on a site that's been specifically architected to not use databases. You're posting this comment on one now; HN stores everything in RAM and periodically journals snapshots out to disk so they survive reboots. Last I heard the whole site runs on one box.

> specifically architected to not use databases. You're posting this comment on one now; HN stores everything in RAM and periodically journals snapshots out to disk so they survive reboots

Yep! And for those that didn't know, this strategy on HN and other paulg projects is actually what inspired Redis! See this antirez tweet https://twitter.com/antirez/status/1110468354542919681 and https://news.ycombinator.com/item?id=19498379

Fascinating! Do you have a link to an article that explains that in more detail?

Reply on news.ycombinator.com