Aeron®’s approach of continuous CPU polling and immediate message processing sets the standard for high-performance messaging. However, continuous CPU usage can present a challenge for applications with less frequent workloads. Despite their sporadic activity, these applications persistently consume CPU resources by continuously polling for work.

Aeron Transport Selector enables applications to enter a ‘sleep’ mode when there are no pending messages in their subscriptions, thereby saving the CPU from spinning and wasting CPU cycles. The application is ‘woken up’ for processing by the OS, as soon as a new message arrives. Although this may cause a minor latency, it’s a reasonable compromise for applications with low data rates, particularly when there are multiple application subscriptions. The Aeron Transport Selector provides a more resource-efficient and cost-effective solution for managing data in low-activity applications.