SSG Improvements, while using the dev server #10053

mikestopcontinues · 2020-01-12T17:23:36Z

mikestopcontinues
Jan 12, 2020

After experimenting with the new static gen api discussed in #9524, I'd like to suggest a better approach to developing using the dev server.

The problem is, at present, navigating between getStaticProps routes causes the dev server to request the results json over and over. This is contrary to production behavior, and it also slows down the development process with extra delays.

@Timer argued that during development, it's in the developer's interest to see the most up-to-date data, and thus, the server request is useful. But I don't see a use-case where this would come into play.

If you're adjusting code, the dev server is going to hot reload anyway, negating the need to navigate around the app to re-request the json response. If you're clicking around your app, it's likely because your testing behavior, which is slowed by re-requests.
And if you're adjusting content that isn't tracked by the dev server (e.g. markdown or some headless cms content), then you're going to have to refresh the browser anyway to see the results of the updates. In this case too, re-requesting the json response doesn't help.

Are there use-cases for re-requests I'm not considering?

Either way, I think we should have the discussion on two fronts:

What should be the default behavior?
Should there be a config option to choose between modes?

Thanks. :)

Janpot · 2020-01-13T12:51:57Z

Janpot
Jan 13, 2020

The problem is, at present, navigating between getStaticProps routes causes the dev server to request the results json over and over. This is contrary to production behavior, and it also slows down the development process with extra delays.

So do I understand correctly that the main problem is that getStaticProps is doing potentially long running data fetching? Would this be less of a problem if those requests used a cache and follow http cache headers?

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mikestopcontinues · 2020-01-13T13:03:37Z

mikestopcontinues
Jan 13, 2020
Author

@Janpot That would be a pretty good solution. What do you see as the benefit vs. using the local copy until refresh? Doesn't the hot reload wipe local data already?

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