@b_sted @stefanjudis @nuxt_js @contentful @Netlify This is using internal mechanics which are core to how the Netlify build works and caches dependencies. It is all still there and available to use.
My (less clever and fancy) proof of concept might help you troubleshoot your experiments:
https://github.com/philhawksworth/content-shards
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You can explore them here and follow me on Mastodon instead of Twitter where I'm not currently active.