envoyproxy/gateway

support multiple regions when using PreferLocal/WeightedZones

Open

#8,146 opened on Feb 1, 2026

View on GitHub
 (5 comments) (0 reactions) (0 assignees)Go (802 forks)auto 404
help wantedno stalebot

Repository metrics

Stars
 (2,871 stars)
PR merge metrics
 (PR metrics pending)

Description

Description: Enable locality_weighted_lb_config for ConsistentHash load balancer type (Maglev/RingHash) in Envoy Gateway, which is already supported by upstream Envoy but not exposed in Envoy Gateway's API.

Use Case: Session affinity with locality preference

Locality-weighted consistent hashing where:

  • ✅ Hash(Session-ID) → picks specific endpoint
  • ✅ Endpoint is in a specific zone → always same zone
  • ✅ Locality weights control the distribution (e.g., 70% in Zone A)

Envoy Gateway's code explicitly:

  1. Doesn't include LocalityLbConfig when building Maglev clusters (missing in xDS translation)

[optional Relevant Links:]

Any extra documentation required to understand the issue.

Contributor guide

Research direction
Tech stack
Domain
Issue type
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Prerequisites
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.