BookUpdateBus¶

BookUpdateBus is a Disruptor-style fan-out event channel for BookUpdateEvent messages, wrapped in pooled Handles for zero-allocation delivery across components such as order books, strategies, and analytics.

using BookUpdateBus = EventBus<pool::Handle<BookUpdateEvent>>;

std::unique_ptr<BookUpdateBus> createOptimalBookUpdateBus(bool enablePerformanceOptimizations = false);
bool configureBookUpdateBusForPerformance(BookUpdateBus& bus, bool enablePerformanceOptimizations = false);

Purpose¶

Efficiently distribute BookUpdateEvents to multiple subscribers with zero allocations in the hot path.

Responsibilities¶

Aspect	Details
Payload	Uses `pool::Handle<BookUpdateEvent>` for memory reuse and ref-counting.
Pattern	Disruptor-style ring buffer with lock-free sequencing.
Target	Consumed by order book processors, strategies, and market monitors.

Factory Functions¶

Function	Description
`createOptimalBookUpdateBus()`	Creates bus with optimal CPU affinity for market data.
`configureBookUpdateBusForPerformance()`	Configures existing bus for optimal performance.

Notes¶

Uses ComponentType::MARKET_DATA for CPU affinity configuration.
Pooling ensures BookUpdateEvents are reused without dynamic heap allocations.
Designed for high-frequency message flow in HFT environments.
Supports optional CPU affinity via FLOX_CPU_AFFINITY_ENABLED.