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Technology · Ebook

BFE: Layer 7 Load Balancing at Scale

by Shriira Press

4.7(263)186 pagesPublished 2026

A practical, in-depth guide to BFE (Beyond the Front End), the open-source layer 7 load balancer and reverse proxy from Baidu (CNCF). Learn how BFE fronts a large web platform: the layer 7 load balancing problem, the config-driven and modular architecture, the forwarding model (products, clusters, sub-clusters, instances), routing with condition expressions, two-level load balancing (GSLB and sub-cluster), the module framework for extensibility, protocols and TLS/edge security, and operating BFE as the intelligent edge of a platform at scale.

Contents

  1. 1Preface
  2. 2Chapter 1 — What BFE Is
  3. 3Chapter 2 — The Layer 7 Load Balancing Problem
  4. 4Chapter 3 — Architecture
  5. 5Chapter 4 — The Forwarding Model
  6. 6Chapter 5 — Routing and Condition Expressions
  7. 7Chapter 6 — Load Balancing
  8. 8Chapter 7 — The Module Framework
  9. 9Chapter 8 — Protocols and Security
  10. 10Chapter 9 — Operations and Observability
  11. 11Chapter 10 — BFE in Practice