feat: add clustering config to fork serve process for CPU core + load balancing

[aralroca]

Fixes #429

After this change it is by default enabled if it is production and it is Linux.

---

clustering

To improve the performance and reliability of your Brisa application, you can enable clustering through the clustering configuration property. When clustering is true, Brisa will fork the process for each CPU core and will load balance the requests.

The default value is true in production and when the operating system will load balance the requests correctly. Otherwise, the default value is false.

Warning

The load balancing is working fine only in Linux. On Windows and macOS, the operating system does not load balance HTTP connections as one would expect.

Example

//brisa.config.ts
import type { Configuration } from "brisa";

export default {
  clustering: true, // This enable clustering in prod and dev.
} satisfies Configuration;

To make it possible, Brisa uses node:cluster to handle the clustering. This Node API also works in Bun.

Caution

If you need to use a Custom Server, this configuration does not apply, and you need to handle the clustering yourself.