These questions were asked me in a technical interview:

•If we deploy an application on multiple server (like
database server, web server) then, each request should be
redirected to proper server, then how you will handle it in
your code?
•How security pinholes will be handled in an application?
•What things should be considered while writing a web
application?
•How will you do load/performance testing of web
application? Which framework you will use for it?
•How will you implement a cache for results which require a
DB access?
Please let me know how to write an web application
considering all these points. I am not so much aware of
architechural design of web application. Your guidelines
will be helpful.