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WebSockets cost us $1M on our AWS bill

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257 points tosh | 1 comments | 06 Nov 24 18:50 UTC | HN request time: 0.213s | 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(3): >>42070126 #>>42070474 #>>42070917 #
1. Sesse__ ◴[06 Nov 24 22:25 UTC] No.42070474[source]▶
Rust atomics, like C++ atomics, include memory barriers (the programmer chooses how strong, the compiler/CPU is free to give stronger).