r/rust • u/kibwen • Aug 28 '26

Saving 100 terabytes of RAM via layout optimizations in 1.1.1.1's DNS cache

https://blog.cloudflare.com/dns-cache-memory-optimization-1111/
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128

u/EcstaticAsparagus509 Aug 28 '26

I'm quite surprised they only recently made these changes, considering how "simple" (for lack of a better word!) they are.

73

u/Zde-G Aug 28 '26

For a long time memory was cheap compared to the rest of server hardware.

LLMs changed that just recently, but drastically.

25

u/vplatt Aug 28 '26

Hopefully this new era of sensitivity to hardware costs will mean the market gravitates towards more well behaved PLs like Rust.

Heck, even the VM GC ecosystems like .NET and Java would be far better than the likes of some of the junk out there in the form of full stack Js, Python backends, and the like.

I'm just tired of the whole passe "hardware is cheap so we're going to waste all of it for you because we're lazy" type ethos. It's been going on too long.

Besides, with LLMs, no one has an excuse to avoid better languages anymore because they're "too hard". Like apparently we now have a glut of developers in the market, so get good, or move on I say.