Thinking about new tech in term of performance is silly. If you need performance NOW just stick with the known solution because odds are you also need stability and a well tested platform.
No, it's not. It's a good indicatior of how performant the framework is likely to be in the future, in the context of ballparks.
For example, if this version already is as quick as comparable software written in C, you know that chances are that it will be even faster in the future and not slower. If it uses an hour to open a port and send a package, that doesn't bode well for future development.
For example, if this version already is as quick as comparable software written in C, you know that chances are that it will be even faster in the future and not slower. If it uses an hour to open a port and send a package, that doesn't bode well for future development.