LMAX is a retail financial trading platform.
It appears it's a synonym of disruptor-pattern and ultimately should become so. Read disruptor-pattern info page to learn about LMAX.
From Martin Fowler's web site about the idea:
LMAX is a new retail financial trading platform. As a result it has to process many trades with low latency. The system is built on the JVM platform and centers on a Business Logic Processor that can handle 6 million orders per second on a single thread. The Business Logic Processor runs entirely in-memory using event sourcing. The Business Logic Processor is surrounded by Disruptors - a concurrency component that implements a network of queues that operate without needing locks. During the design process the team concluded that recent directions in high-performance concurrency models using queues are fundamentally at odds with modern CPU design.
