Assess impact of pulling news from Substack on homepage load time and address if appropriate

[anthonybailey]

As per #654 (comment)

[Wituareard]

It shouldn't be blocking right? But caching the endpoint could be a good idea

[Wituareard]

Re-applied caching, Netlify behaved differently than browser

[anthonybailey]

For me, it's really useful if you give just a bit more detail re what you did and why, Nils.

If you believe the issue is resolved - that we understood the impact of calling and caching and made the right choice - can you write something demonstrating this and describing the result?

[Wituareard]

Sorry, I thought this individual change was small enough to not require explanation. I didn't notice any performance issues so I don't know whether there is anything else to investigate. Loading a cached response for each visit should basically be the same as loading a static asset wrt cost and performance if I understand correctly.