On Create

OnCreate runs logic exactly once, right after a component is first constructed — useful for spawning background tasks or kicking off warm-up work:

use axumstart_components::{async_trait, ComponentProvider, OnCreate};

#[async_trait]
impl OnCreate for Worker {
    async fn on_create(&self, ctx: &ComponentProvider) {
        // runs once, before any caller observes the resolved instance
    }
}

#[derive(Component)]/#[component] detect a hand-written OnCreate impl automatically and route to the right register_* call when register_all() runs.