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Half a percent is small but there should ideally be zero errors. Could you file a report so we can fix that?
Part of what makes the redbean TLS stack fast, is that I spent a lot of time hacking on MbedTLS to improve its performance. One of things that's counter intuitive about crypto code is assembly can be safer in additional to being faster, since it helps guarantee the compiler doesn't add branches, for things like bit overflow carrying in arithmetic operations. One example is https://github.com/jart/cosmopolitan/blob/master/third_party... which I've been meaning to upstream into mbedtls. Another thing I added is https://github.com/jart/cosmopolitan/blob/master/libc/nexgen... which greatly improves the performance of RSA multiplication using Intel's ADX ISA. But C crypto code can be beautiful too! For example, I found Everest particularly impressive, since they solve overflow in a different way, and as such, it's quite possibly the only large piece of C/C++ code I've ever seen that contains zero conditional branches and zero pointers. https://github.com/jart/cosmopolitan/blob/master/third_party...
I've been having a lot of fun with this developing tiny webapps using Fullmoon[1]. I love Lua, but I frequently bounce between a Windows PC and a Linux PC. Having redbean + Fullmoon has made it a breeze switching back and forth without having to deal with system Lua installs. SQLite and the thorough amount of built-ins[2] is also a dream.
[1] https://github.com/pkulchenko/fullmoon
[2] https://redbean.dev/#functions
> Is Lua backend-able?
Yes and some of the largest web infrastructures in the world run on it! I'm not sure if it's still true, but it's my understanding the CloudFlare runs it at the edge. I personally know of several other very _large services_ running it at massive scale.
[0] https://openresty.org
For the curious, Fennel[1] is to Lua what Clojure is to Java. I'm curious, though, can you not add Lua libraries to redbean? My understanding is that the file is a zip and you can therefore add dependencies and (presumably) load them into the lua runtime on invocation. E.g. you don't need Justine to add it for you, you can add it yourself.
1 - https://fennel-lang.org/
I created a template for adding Fennel to Redbean, although I haven't tested it with Redbean 2.0:https://gitlab.com/actuallyalys/redbean-fennel.
Try upgrading to the latest version; I upstreamed a patch in zsh last year. https://github.com/zsh-users/zsh/commit/326d9c203b3980c0f841...