alt Hacker Newsv8 isolates aren't actually a great sandbox and I would not trust them implicitly in the AI era. This is probably why they wrap them in an additional sandbox.
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dummydummy1234 • yesterday at 7:48 PM
Why are v8 isolates bad, I see speculative execution hacks, but are there others?
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But I guess they are good enough to isolate multiple instances of the same code, ran by the same customer in parallel.