Can we take a moment to talk about how wild this is? Svelte has 0 dependencies.pic.twitter.com/fzNAm7iuRi
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Does it really matter though? If you have a lockfile then you aren’t doing any version resolution. Yarn/npm already use keep-alive to reuse HTTP connections. Is the complexity of a serverside registry worth it just for faster ‘yarn add’?
is it worth it... maybe not. As you said the speed up would be only the case of an unlocked npm install (or yarn add). But inversely the network load on a registry would drop significantly if it kept a resolved module tree for the top N installs
It would also completely destroy edge caches. Registry is simpler to operate if you can cache the JSON for all public packages. @ceejbot may have thoughts to share 
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