What is a data buffer?

A data buffer is best defined as a temporary storage area for data. It plays a crucial role in computing by holding data that is in transit between two devices or processes, which helps manage differences in data processing rates. For example, when data is transferred from a fast source to a slower destination, a buffer temporarily holds the data to ensure a smooth and efficient transfer without loss or overflow. This capability allows systems to work seamlessly, even when there are discrepancies in speed.

Buffers are commonly utilized in various contexts, such as in streaming videos, where they load a certain amount of data ahead of time to prevent interruptions. By temporarily storing this data, a buffer aids in improving the performance and efficiency of data flow in computing environments.