The idea of caching WebAssembly is touched upon in this article: https://hacks.mozilla.org/2018/10/webassemblys-post-mvp-future/ https://hacks.mozilla.org/2018/

The idea of caching WebAssembly is touched upon in this article: https://hacks.mozilla.org/2018/10/webassemblys-post-mvp-future/ https://hacks.mozilla.org/2018/10/webassemblys-post-mvp-futu... (see "Streaming compilation" and "Implicit HTTP caching") Caching is also a helpful idea beyond the size of the initial download. Future compilers (cranelift), will have time to make multiple optimization passes on the instructions and save them for later.