envoyproxy/envoy

xDS resource circuit breakers

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#9,060 opened on Nov 18, 2019

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enhancementhelp wanted

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Description

We should have configurable circuit breakers for xDS resources (and a sane default) to help operators more easily understand if their management server is not doing what they think it is. Inspired by this talk: https://envoycon2019.sched.com/event/UxvT/envoys-using-10gb-of-memory-and-its-all-my-fault-steve-sloka-vmware

Contributor guide

Research direction
Investigate circuit breaker patterns for xDS resources in Envoy. Understand the current xDS subscription and update logic, identify where backpressure or rate limiting can be applied, and propose a configurable circuit breaker with sensible defaults.
Tech stack
cpp
Domain
backendnetworking
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++EnvoyxDS
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15