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The importance of buffers
1. The Importance of Buffers
By Amber D. Walker, eHow Contributor
Many applications and devices use data buffers to temporarily hold data before it is used.
This is usually done to ensure that there are no interruptions in the flow of data to its
destination.
What is a Buffer?
1. A buffer is section of memory set aside to store a set amount of data before it is
sent to another device or application.
Why Buffers are Necessary
2. Buffers are used when the rate of data transfer between two devices is either
dramatically different, variable or prone to temporary interruptions.
Difference Between a Buffer and a Cache
3. Buffers and caches are related concepts, and many implementations will fill both
roles. But there is a key distinction: A buffer stores information to ensure it can be
sent without interruption, while a cache stores information that is expected to be
used more than once.
Common Uses of Buffers
4. A good example of buffer use is streaming video over the Internet. Speeds can
vary widely over the course of a download, but users expect video to play without
interruption. Use of a buffer allows for continuous playback despite an uneven
flow of data.
Buffer Overflow Error
5. A buffer overflow, or overrun, error occurs when a program attempts to write
more data to a buffer than it is capable of storing, overflowing the buffer and
flooding other parts of memory with the data.