They had pretty neat infra, maybe it still runs in the same clever way. https://meta.stackexchange.com/questions/10369/which-tools-a...
Recently they've chucked out their own servers:
https://stackoverflow.blog/2025/12/24/the-great-unracking-sa...
Notably the default Redis client for most .NET developers is still StackExchange.Redis.
Recently they've chucked out their own servers:
https://stackoverflow.blog/2025/12/24/the-great-unracking-sa...