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Deno Under TinyKVM in Varnish
Previously, I said that TinyKVM runs regular Linux ELFs and I use this to test my programs on the terminal like a regular program before I load them in Varnish.
One of the TinyKVM example programs embeds a GBC emulator I wrote in 2017, which is presented as a webpage lightly strewn with some inline CSS wizardry by my friend Kyle. Ideally such UI code would be run with per-request isolation to avoid the possibility of leaking data between requests — all too easy if a variable declaration is placed at the wrong level — but current options are prohibitively slow. The current proof of concept implementation achieves per-request isolation with ~0.4ms of additional latency when rendering a complex page with React taken from a real site.
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