envoyproxy/envoy

support 0 max_tokens bucket in local ratelimit

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#45,845 opened on Jun 26, 2026

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 (4 comments) (0 reactions) (0 assignees)C++ (5,373 forks)batch import
area/local_ratelimitbeginnerenhancementhelp wanted

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Description

As describe in https://github.com/envoyproxy/gateway/issues/9273, the global rate limit support 0 max token play as always reject, it would be good if we could support same on local ratelimit.

cc @voraci0us @wbpcode

Contributor guide

Research direction
Inspect the global rate limit implementation for 0 max tokens in Envoy, then adapt the local rate limit to support the same behavior by modifying the token bucket logic.
Tech stack
cpp
Domain
backend
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.
1-3 hours
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++Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70