LMAX Disruptor

https://lmax-exchange.github.io/disruptor/

• The Disruptor is a concurrency framework created by LMAX to achieve very low latency and high throughput on their Java trading platform.
• LMAX found that using queues between stages of their system introduced latency, so they focused on optimizing this area.
• The Disruptor uses a lock-free “ring buffer” approach to avoid cache misses and locks at the CPU level, which are very costly.
• The Disruptor is intended as a general-purpose solution for concurrent programming, not just for financial applications.
• Applying the Disruptor pattern is not as simple as replacing all queues with the ring buffer - the user guide provides guidance.
• There are blogs, articles, technical papers, and performance tests that explain how the Disruptor works.
• A presentation and discussion group are also available for learning about the Disruptor from its creators.
• Martin Fowler has reviewed the Disruptor’s use at LMAX.
• The Disruptor is significantly faster than the ArrayBlockingQueue, as shown in the latency histogram.
• More performance results are available comparing the Disruptor to other approaches.

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