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A comment on Actix Web: Optimization Amongst Optimizations. Parent comment

Re:Actix Web: Optimization Amongst Optimizations by fafhrd91 on Sunday January 05, 2020 @02:42PM (#21963476)
You still need to initialize inner structures and buffers. Cache allows to avoid that.
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Re:Actix Web: Optimization Amongst Optimizations by JoshMcguigan on Sunday January 05, 2020 @04:41PM (#21964330)
Thanks for the response.

So it sounds like it is not so much the allocation/de-allocation savings that matters, but rather that you get to skip initializing the memory because it is already known to be a valid instance of a given struct type?

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Re:Actix Web: Optimization Amongst Optimizations by jlokier on Monday January 06, 2020 @07:20AM (#21968563)
Yes, that.

See also SLAB allocation, used in many OS kernels: https://en.wikipedia.org/wiki/Slab_allocation

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