[latchkey]

The article is about 15k functions. You know what is a lot worse than lazy loading? Getting 15k functions to deploy accurately. I've seem functions fail to deploy, are you going to fail the whole build if one of the 15k fails? What if functions depend on other functions? How about CI/CD where you're updating multiple times a day? How about when you update a single dependency across those 15k and you need to deploy again?

I don't know what PaaS you've used, but at least with Google Cloud Functions, you can do a minimum number of instances. Set it to 1 and you never have cold start issues.

[report-to-trees]

I agree 15000 functions is overkill and I would never recommend something like that. I'm trying to explain why combining all 15k functions into a single Faas deployment is not going to be the best option either.

There is a middle ground that will be much faster and cheaper all around.