With the development of cable TV, satellite TV and the internet, a new technology called VOD (Video On Demand) was developed.
Researches showed that 80% of the demand for movies and TV shows are for something like the 20 most popolar movies at the time. Likewise, the demand for VOD is bigger on holidays and weekends than on other dates at the calendar.
There are two importent rules wich are the core rules for supplying good and reliable service:
1. When user ask for a movie - it is required to supply it as soon as possible.
2. No "Hiccups" is allowed.
These two rules and the data was given earlier rase a question: how to supply a good and reliable service during peak hours?
This article is one of the earliest articles which deal with
broadcasting. Broadcasting rely on the existence of high demand for a few items, therefore the system servers
Broadcast these items periodicity to all users.
This way the server is not getting loaded and it always broadcast the same amount of data, with no dependence on the amount of users which ask for it.
In Pyramid Broadcasting method which described in this article, the item is devided into "pieces" at rise approximate size