Discord infra engineer here -- this blog post needs an update! Since then we've scaled this system much more. :)
The Fortnite Official server has exceeded 100,000 concurrent users, Discord itself is way past that 5M concurrent number, we're now using Rust in certain places to make Elixir go faster, we've built a general purpose replacement to Process.monitor that scales a whole truckload more that we're open sourcing next week at Code BEAM SF... the list goes on.
There's a lot of fun stuff going on to try to make this system even more efficient and reliable, there's a lot to do still. We run everything on a very small engineering team (there are 4 fulltime engineers on the core infrastructure, only about 40 engineers in the whole company) and we're always looking for a few more. Feel free to reach out to me (zorkian#0001 on Discord) if this blog post sounds up your alley!
The Fortnite Official server has exceeded 100,000 concurrent users, Discord itself is way past that 5M concurrent number, we're now using Rust in certain places to make Elixir go faster, we've built a general purpose replacement to Process.monitor that scales a whole truckload more that we're open sourcing next week at Code BEAM SF... the list goes on.
There's a lot of fun stuff going on to try to make this system even more efficient and reliable, there's a lot to do still. We run everything on a very small engineering team (there are 4 fulltime engineers on the core infrastructure, only about 40 engineers in the whole company) and we're always looking for a few more. Feel free to reach out to me (zorkian#0001 on Discord) if this blog post sounds up your alley!