feature: 配置集群限流时候,建议有个单机的阈值兜底

Description

Contributor guide

Tech stack

java

Domain

backendinfrastructure

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

over 1 week

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

blocked

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

Sentinel cluster flow controlJavaFlow control concepts

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

15

Research direction

Examine the current cluster flow control implementation in Sentinel, particularly the FlowRule and ClusterFlowConfig classes. Understand how the count is used for cluster threshold and identify where a fallback to a local threshold should be added. Review any ongoing discussions in the issue comments for implementation details.