Hi everyone,

I've just released serverino 0.7.17, with several improvements. Here are a couple of highlights:

Hot reload just got smarter.
You can now gracefully reload all workers without losing any active or queued requests. This means you can deploy updated worker code and have it take effect immediately without interrupting your server.

• On POSIX systems, send SIGUSR1 to the server process: kill -SIGUSR1 <server_pid>

• On Windows, serverino watches for a temporary canary file — just delete it to trigger a reload.

Even better: if you enable config.enableWorkersAutoReload(), serverino will automatically restart workers whenever the executable is recompiled, again without interrupting any in-flight requests. Watch auto-reload in action in this video on youtube.

KQueue is now the default backend on macOS.
It has been available for a while on both macOS and Linux, but it's now officially the default on macOS (on linux epoll is set as default backend)

Fastest way to test serverino:

dub init -t serverino blah
cd blah
dub

More info, docs, examples on github

Andrea

It is so lovely to see you improving and keeping the serverino alive. I understand that one can update the server executable without having to shut the entire thing down. Please correct if I am wrong. Even though I haven't been doing web stuff recently, it is my go-to solution when I need it because Serverino is relatively lightweight. Please keep up the good work. I hold an Aperol Spritz for the good work of you :)

Ferhat

Hi everyone,

I've just released serverino 0.7.17, with several improvements. Here are a couple of highlights:

[...]

On Saturday, 24 May 2025 at 16:50:02 UTC, Andrea Fontana wrote:

Really interesting hot reload implementation

On Tuesday, 27 May 2025 at 11:54:34 UTC, aberba wrote:

In a production environment, how do you handle deployment without killing ongoing requests?

Exactly in this way. Just deploy the new executable and restart workers sending a SIGUSR1 signal to daemon. That's it. Workers will be restarted softly without any hiccup.

Andrea

Hi everyone,

I've just released serverino 0.7.17, with several improvements. Here are a couple of highlights:

Hot reload just got smarter.
You can now gracefully reload all workers without losing any active or queued requests. This means you can deploy updated worker code and have it take effect immediately without interrupting your server.

• On POSIX systems, send SIGUSR1 to the server process: kill -SIGUSR1 <server_pid>

• On Windows, serverino watches for a temporary canary file — just delete it to trigger a reload.

Even better: if you enable config.enableWorkersAutoReload(), serverino will automatically restart workers whenever the executable is recompiled, again without interrupting any in-flight requests. Watch auto-reload in action in this video on youtube.

KQueue is now the default backend on macOS.
It has been available for a while on both macOS and Linux, but it's now officially the default on macOS (on linux epoll is set as default backend)

Fastest way to test serverino:

dub init -t serverino blah
cd blah
dub

More info, docs, examples on github

Andrea