this post was submitted on 26 Apr 2026
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The low powered server is the Caddy server, all it does us act as a reverse proxy for everything in my house, giving it an SSL cert and doing things like WOL. The caddy config basically just says "Here's your reverse proxy target, if you don't get a response within one second, send a WOL packet, wait a couple of seconds, then try again".
The only requirement is for you to do a custom build of caddy (this is done with a dockerfile), and to have WOL enabled on the high power server.
It means the first web request for services on the high power server might take a few seconds, but everything after that is smooth.
Is it that high power server takes a few seconds to boot? What’s the hardware you have there? I’m curious that’s the average boot time for an average high power server? I do use heavily obsolete devices for my personal servers (think of DDR-2 era devices with Intel Atom or sometimes core 2 duo devices) usually without even SSDs. With an SSD, my desktop devices (all DDR-3 era with SATA-3 disks) boot within 20…30 seconds, which is good enough for me. I assume the more modern devices would be quicker, but [single-digit, I assume] seconds sounds very good. To me, that sounds like it’s a no-brainer to have this feature. I was thinking whether I can wait minutes for something I need occasionally to boot. Seconds is just too fast. I think that delay is tolerable even for a commercial / production server, where the expectations are just different.
I'm not shutting it down, just sleeping it. My high powered server is a gaming PC from a few years ago. Running Linux, my best case scenerio for cold boot would still be 10-20 seconds, but wake from sleep is near instant.
Sleeping is something I haven’t think of, but it’s a really great way of saving power! Thanks for your input, I’d definitely replicate your approach! (When it comes to scale a bit.)