The difference between the ring buffer and the queue

Question

What is the difference between a circular (circular) buffer and a queue? Both support FIFO, so in what scenarios should I use the ring buffer in the queue and why?

Relevance for Hadoop

In the map phase, a ring buffer is used to store intermediate pairs of key values. What are the reasons for this choice in line?

Answer 1

A queue is an abstract data type that supports enqueue and dequeue operations. A ring buffer is one possible implementation of a queue, although it is not the only one (for example, you can implement a queue using a linked list). In other words, a queue is a generic term for a data structure that can support inserting FIFOs and call buffers - this is one of the possible data structures that you could use to implement the queue.

Hope this helps!

Answer 2

RingBuffer is an array that is used as a queue

It will support both read and write positions separately. When it reaches the end of the array, it will continue from the beginning of the array.

Using RingBuffer through a queue.

1. Ring buffers are fast.
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Answer 3

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Answer 4

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• Messages are sent from one system to another. order is important and no one should be lost.