什么是Web应用程序稳定性的良好标准度量标准？

We currently facing some stability issues with our develop web application product. This product was built in part by our partner contractor, and we want to have a good standard metric for stability. The issues we have been facing is constant crashing. The web application is unable to identify when there are more request than it can handle, it builds up memory (like a memory leak) and later it dies without any type of possible recovery. We currently facing some stability issues with