Data Plane Cooperative Caching with Dependencies

Ori Rottenstreich, Ariel Kulik, Ananya Joshi, Jennifer Rexford, Gábor Rétvári, Daniel Sadoc Menasché

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Caching is at the core of most modern communication systems, where caches are used to store content and traffic classification rules. While network components can leverage caching in a cooperative manner, one important aspect of such systems concerns possible dependencies among stored items. A major use case of such dependencies appears in rule placement across software-defined networks (SDNs). Despite the tremendous success of SDNs in datacenters, their wide adoption still poses a key challenge: the packet-forwarding rules in switches require fast and power-hungry memories. Rule tables, which serve as caches, are of limited size in cheap and energy-constrained devices, motivating novel solutions to achieve high hit rates. We leverage device connectivity in the fast data plane, where delays are in the order of few milliseconds, and propose multiple switches to work together to avoid accessing the control plane, where delays are orders of magnitude greater. As a low priority rule in a cache entails caching higher priority rules, we pose the problem of cooperative caching with dependencies. We provide models and algorithms accounting for dependencies among rules implied by existing switch memory types, and lay the foundations of cooperative caching with dependencies.

Original languageEnglish (US)
Pages (from-to)2092-2106
Number of pages15
JournalIEEE Transactions on Network and Service Management
Volume19
Issue number3
DOIs
StatePublished - Sep 1 2022

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • Cooperative caching
  • software defined networking

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