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Comment by tiffanyh | Hacker News Reader

Love Lapis.

Question, since Lapis just transcode Moonscript into Lua to be used with OpenResty - why is Lapis so much slower than raw OpenResty/Lua?

https://www.techempower.com/benchmarks/

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Lapis is an entire web framework, OpenResty is a relatively low level interface to nginx. Lapis is an abstraction on top of OpenResty's Lua interface to make developing large web applications much more manageable.

It has nothing to do with MoonScript. MoonScript generates speedy code.

Any plans to focus on increasing Lapis performance to be closer to raw OpenResty?

"slower" : I see Lapis is ahead of most frameworks, except platform or micro frameworks coded in C++, C or java. I think people should notice instead it's one of the fastest frameworks?

Did you compare Lapis to OpenResty in the benchmark above?

In case you're not aware Lapis = Moonscript + OpenResty.

And Moonsript is like Coffeescript but for Lua

Lapis ~= Moonscript + OpenResty, Lapis = OpenResty + loads of framework stuff to make development easier, as Leafo explained.

You can use Moonscript, but you can also use pure Lua.

Because the lua code moonsript emits is inherently slower.

Not really, the code mapping is very straightforward and generally has no performance degradation. There are some language constructs that are implemented in a way that can create anonymous functions in order to convert statements into expressions. Future versions of MoonScript can do a better job to eliminate those. If you're aware when they're generated you can avoid them by writing as you might do in Lua. Realistically though, the performance difference is negligible in comparison to all the other things that might happen in your average web request.

>> "inherently slower"

What's "inherent" in moonscript that makes it slower?

Not necessarily. Like CoffeeScript, it depends on what features you use.

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