Earlier quoted context omitted.
Wasmer claims to cold start in 50ns. This is obviously impossible: That's 1000x faster than an NVMe read, which is about the fastest cold storage you can get. At least make your claims credible before posting them in competitors' HN threads.
> Wasmer claims to cold start in 50ns I believe this statement was based on Wasmer Edge product page, which was mainly measuring instantiation time if the module is already loaded in the Edge Node (which can be assumed true for most common programs such as WinterJS, static-web-server and more). As it seems the 50ns timing was not well understood, we updated our product page to reflect a more accurate timing thanks to…
It sounds like you're saying that your hosting never incurs cold starts in the first place, because you always preload all customers' applications into memory before serving any traffic.
That's a fine optimization, if you can fit everything. Cloudflare Workers also preloads the most popular apps before serving traffic -- but we can't load all applications this way since they wouldn't all fit into memory. We only consider it a "cold start" when a request arrives for an application that wasn't preloaded.