> resulting VM outperforms both my previous Rust implementation and my hand-coded ARM64 assembly

it's always surprising for me how absurdly efficient "highly specialized VM/instruction interpreters" are

like e.g. two independent research projects into how to have better (fast, more compact) serialization in rust ended up with something like a VM/interpreter for serialization instructions leading to both higher performance and more compact code size while still being cable of supporting similar feature sets as serde(1)

(in general monomorphisation and double dispatch (e.g. serde) can bring you very far, but the best approach is like always not the extrem. Neither allays monomorphisation nor dynamic dispatch but a balance between taking advantage of the strength of both. And specialized mini VMs are in a certain way an extra flexible form of dynamic dispatch.)

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(1): More compact code size on normal to large project, not necessary on micro projects as the "fixed overhead" is often slightly larger while the per serialization type/protocol overhead can be smaller.

(1b): They have been experimental research project, not sure if any of them got published to GitHub, non are suited for usage in production or similar.

At that 3rd party side GH is currently noticeable worse then claude ...

Like they are down to one 9 availability and very very close to losing that to (90.2x%).

This also fit more closely to my personal experience, then the 99.900-99.989 range the article indicates...

Through honestly 99.9% means 8.76h downtime a year, if we say no more then 20min down time per 3 hours (sliding window), and no more then 1h a day, and >50% downtime being (localized) off-working hours (e.g. night, Sat,Sun) then 99.9% is something you can work with. Sure it would sometimes be slightly annoying. But should not cause any real issues.

On the other hand 90.21%... That is 35.73h outage a year. Probably still fine if for each location the working hour availability is 99.95% and the previous constraints are there. But uh, wtf. that just isn't right for a company of that size.