The Pricing Of Commodity Contracts Basis In Future Contracts ?

Basis in Future Contracts ? - the pricing of commodity contracts

I understand the basic definition. (This is the difference between spot price and contract price of a product is).

1. What are all factors that influence this basis? Please explain me in detail and clear.

2. Retailers expect? Base operator base will go long and short of the basic operator wants to lose? This is the opinion of the company in sight? What does he / she expects that more than basic? Here, too, please clarify and detail.Please Give examples if possible.

Type 3.Toda suggestions / advice in connection with the contract for the commodity futures.

Please help me guys.