Priority of events in ring buffer?

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Dmitry Zagorulkin

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Aug 12, 2019, 9:56:16 AM8/12/19

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Hello,

How to process some messages before others?

What is the best pattern to achieve this behavior?

Thanks!

Maksim Zheravin

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Aug 12, 2019, 2:55:23 PM8/12/19

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Hi Dmitry,

Let me share my understanding.

Preserving original messaging sequence is a crucial part of the Disruptor pattern.

It is possible to handle messages in any arbitrary order, you can even reorder them, but only within a single batch scope (between heading sequence barrier and tailing sequence).

If you need something similar to priority queue - this is not possible, unless you have two ring buffers.

Regards,

Dmitry Zagorulkin

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Aug 15, 2019, 4:55:03 AM8/15/19

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Maksim, thanks!

Do you have any example code how to use two ring buffers properly for such task?