ONCache: A Cache-Based Low-Overhead Container Overlay Network
summary
Claims a cache of per-flow processing results (routing, tunnel headers, packet-filter decisions, with checksum fixes) eliminates repetitive overlay work and makes container networking near bare‑metal. Implements the cache in eBPF, uses ebpf maps to store entries, initializes on first-packet miss and bypasses the overlay thereafter, and ships as an Antrea plugin in 524 lines of code. Evaluation shows throughput and request/response gains of 12% and 36% for TCP (20% and 34% for UDP), large per‑packet CPU savings, and roughly 3× faster connection creation than SLM.
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chapters (5)
- 0:00ONCache introduction
- 3:52Core idea and design
- 8:26Implementing with eBPF
- 11:38Evaluation and performance
- 14:52Conclusion and future
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