Basics and Fundamentals in .NET

Some Concepts you must know in Web

Cookie-less sessions

• Some users disable cookies in their browser. If SessionID is stored in cookies, it will not work.
• Cookie-less sessions embed the SessionID in the URL instead. (not the session values itself J )
• In some cases and countries, it's even illegal for an application to require cookies to work!
•  is very easy to set in web.config

<sessionState cookieless="true" />

Sliding expiration

• Cache will expire after a given time (for eg: 20 minutes) if no request is made within that 20 minutes
• If a request is made within the expiration time (20 minutes) it will reset  the expiry time for another 20 minutes 

string sDescription = "This product is very useful for blah blah....";

//Sliding Expiration

Cache.Insert("SlidingExpiration", sDescription, null,

System.Web.Caching.Cache.NoAbsoluteExpiration, TimeSpan.FromMinutes(1));

Work in Progress...

CSS Sprites

ControlState

HTTPHandler

HTTPModule

eTags

Some concepts you must know in Garbage Collection

Finalize and Dispose

Generations in Garbage Collection

Finalization Queue

Some concepts you must know in Framework/C#

Static Constructors

Shadowing

MulticastDelegates

Anonymous methods

Anonymous types

Extension methods

Lamda Expressions

Patterns and Principles

Inversion of Control

SOLID

Singleton

Facade

Factory vs Abstract Factory

SQL

Having and Where clause

Common Table Expressions

Covering Index

Isolation Levels

candidate key, alternate key

SP Best practices