When does load and preload run?

I started a solidstart project I'm toying with and I'm not understanding some of the data fetching model.

export const route = {
  load: async () => {
    console.log("load!");
  },
  preload: async () => {
    console.log("preload!");
  },
} satisfies RouteDefinition;

export const route = {
  load: async () => {
    console.log("load!");
  },
  preload: async () => {
    console.log("preload!");
  },
} satisfies RouteDefinition;

Is there any point combining the two? Because I only see "load" when I comment out the preload function. But either way, when I hover the link it still preloads but calls the load function. When and for what should I use them?

3 Replies

Brendonovich•3w ago

load is the old name for preload, it's a feature of solid router: https://docs.solidjs.com/solid-router/reference/preload-functions/preload they're called before navigating and on link hovers so that you can start fetching data earlier

notherplebOP•3w ago

Ok, that makes more sense. Just to be sure, you retrieve that preloaded data by defining some getData wrapped by a query?

Madaxen86•3w ago

Yes.

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When does load and preload run?