If Twitter is using RPCs is for internal communication (i.e., among microservices), so how on earth would it make a difference depending on the country? Elon doesn't know what he's talking about.
I tried my best to fill in the blanks for this story, and my working understanding is this:
1) Client requests service.
2) Service is graphQL, which makes the "thousands of calls" Musk is referring to towards other backend APIs.
3) There was an incorrect international cache/CDN configuration which hurt response time of these APIs for some countries.
4) Musk claims its the API calls causing slow performance, engineers point out that its technically the cache.
Debate is about if using graphQL is even worth it if it needs such complex caching to work well
1) Client requests service. 2) Service is graphQL, which makes the "thousands of calls" Musk is referring to towards other backend APIs. 3) There was an incorrect international cache/CDN configuration which hurt response time of these APIs for some countries. 4) Musk claims its the API calls causing slow performance, engineers point out that its technically the cache.
Debate is about if using graphQL is even worth it if it needs such complex caching to work well