Why is Golang fast?

Go is Fast Because Go is compiled to machine code, it will naturally outperform languages that are interpreted or have virtual runtimes . Go programs also compile extremely fast, and the resulting binary is very small. Our API compiles in seconds and produces an executable file that is 11.5 MB.

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Why is C++ so fast?

First, C++ is intrinsically stingy with memory (unlike Java objects, a C++ struct has no memory overhead if there are no virtual functions [modulo word alignment issues]). Smaller things run faster due to caching, and are also more scalable.

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