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Add note about rebuilding

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Samuel Štancl 2025-08-28 18:07:19 +02:00
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@ -380,3 +380,11 @@ Then clean garbage:
```sh ```sh
sudo nix-collect-garbage -d sudo nix-collect-garbage -d
``` ```
## Rebuilding
From personal testing, running `nixos-rebuild switch` doesn't necessarily cause any downtime for users
if your website is behind Cloudflare. NixOS first builds everything it needs and only then, usually pretty
quickly, restarts (and adds, removes, etc) services as needed. This means your nginx **might** be down for
a very brief period, but if Cloudflare cannot connect to your server it will retry a couple of times. So at
most some requests will be very slightly delayed, but users should not see any errors on most rebuilds.