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WebSockets cost us $1M on our AWS bill

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362 points tosh | 1 comments | 06 Nov 24 18:50 UTC | HN request time: 0s | source
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cperciva ◴[06 Nov 24 21:20 UTC] No.42069585[source]▶
We use atomic operations to update the pointers in a thread-safe manner

Are you sure about that? Atomics are not locks, and not all systems have strong memory ordering.

replies(4): >>42070126 #>>42070474 #>>42070917 #>>42076779 #
1. CyberDildonics ◴[07 Nov 24 14:10 UTC] No.42076779[source]▶
A huge part of atomic operations in programming languages and modern CPUs (meaning in the last few decades) is updating pointers in a thread safe manner.

Why would think you need locks?