Hot Buffer

What Does Hot Buffer Mean?

A hot buffer is a specific type of technology resource that is classified by its use. It is categorized according to what is known as a Least Recently Used (LRU) algorithm, which shows when and how often a buffer is utilized by a system.


Techopedia Explains Hot Buffer

The hot buffer term is most commonly used in Oracle development guides and guidelines. Oracle’s buffer cache is a data repository that is used to cut down on actual physical disk input and output. To this end, Oracle processes access the buffer cache according to specific user events. The LRU then orders buffers according to their last use.

In general, buffers help conserve physical performance for intensive data storage and data transfer systems. Understanding these kinds of tools helps improve the management of data centers, data warehouses and other resources that are commonly used in a wide range of fields and industries. Algorithms, like the LRU, serve to make more efficient use of these resources and to provide organizational support to database professionals.

Buffers that have not been recently used are known as cold buffers, whereas hot buffers are recently used.


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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.