What are the dos and dont's to develop an ASP.net web API wi

Question

Hi

 

I am creating a new ASP.NET web api from the scratch using Entity framework,would like to borrow others experience to get a list of dos and dont's for optimum performance,the front end is going to be written in Angular JS,few concerns I have are

 

1.How to keep the backend lightweight?

2.I want to keep the backend purely EF queries and good queries?is there a way to figure out  if the queries or good or bad in terms of performance?

3.there is a request to connect to ssh and to peforce to retrieve some data,my proposal is to put all the required info in database ?what do you say

 

please share your experiences or pointers on where to get this info