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Christian Wernecke

Content-based publish/subscribe with P4

Universität Rostock, 13. Juni 2025

https://doi.org/10.18453/rosdok_id00005146

Abstract: This thesis presents novel notification delivery strategies implemented in P4. These encode custom tags in packet headers to build notification-specific delivery trees that balance routing information between the packet header and switch memories. Advanced strategies compute frequently used paths by different levels of knowledge, which are stored as virtual trees (VTs) in the switches. Complete trees can be formed from these VTs by extending, combining or pruning them based on header tags. Evaluations show the trade-offs among the strategies and their adaptability to diverse pub/sub scenarios.

doctoral thesis   free access