Deno Under TinyKVM in Varnish

A little bit about compute in Varnish Cache and some Deno JS benchmarks Hey all. I recently wrote about TinyKVM, a sandbox with native performance. This time I want to write about how you can try it out as a compute framework in Varnish Cache. I’ve also been very anxious (to say the least) about whether or not my theories hold up in practice. Is TinyKVM really the fastest way to sandbox compute workloads? What about per-request isolation? I’ve invited Laurence Rowe to write with me about his adventure in embedding the Rust-based Deno JavaScript runtime in TinyKVM. I wrote previously 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. When running TinyKVM embedded in Varnish, there is a small API to facilitate receiving a HTTP request and writing back a response. Which is really the crux of the whole thing: I specifically designed it to be just a dumb “here’s a request” and “where’s the respo ... Read full article.