Queue protection with selective l4s use

Abstract

Use of a preferential resource, such as a Low Latency, Low Loss, and Scalable Throughput queue of a device, may be selectively enabled based on past resource-requesting behavior of a sending application. A characteristic, such as an Explicit Congestion Notification bit, of network traffic transmitted by a sending application is detected during a data traffic congestion condition at a receiving network node. If this characteristic indicates a request for processing via a preferential queue, then a prior network traffic transmission profile of the sending application may be identified, based on which it is determined whether the sending application has not, within a threshold time period, previously transmitted prior network traffic that indicated a prior request for the processing via the preferential queue. Accordingly, access to the preferential queue may be granted, or may be made more likely, for data packets of the current network traffic of the sending application.