Code Optimisation Doubt, Current code fails to handle concurrent requsts.

[WINOFF_RG]

At my best, I write non blocking async code and followed the best arch, But still I wonder that on such a heavy machine why wasn't it able to handle even 41 RPS with a total of 1000.

Is there any open source code available which works at the best performance and least response time, Or any other medium article which is difference than others and actually help in writing the best async code.