This site is a Demo for Perfon.Net library.
Perfon.Net is a performance monitoring .Net framework for web applications without using windows performance counters.
It is designed mainly for use in WebApi and MVC projects, placed on shared hosting plans, when you have no access to IIS or OS or have non-privileged rights.
It has built-in REST API and UI dashboard, see it here →
Web Api for getting performance counters:get counters list: api/perfcounters
It has three built-in storage drivers, allowing to save counters data to CSV file, in embedded LiteDB database (www.litedb.org, SQLite analog) or to keep it in memory cache.
You could develop own storage driver implementing simple interface.
Custom counters could be impelemented easily deriving from Perfon.Net base performance counters.
Threshold notifications could be set on counters.