alibaba/Sentinel

[RFC] Sentinel Rust polyglot version

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#1475 opened on May 13, 2020

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SoC2021area/polyglothelp wanted

Description

Issue Description

Type: feature request

Describe what happened (or what feature you want)

Implement Sentinel in Rust, including basic statistic and flow control functionalities. Some expected features:

  • Basic statistic structure (sliding window that can achieve high concurrency and accuracy)
  • Rate limiting (based on sliding window, token bucket or leaky bucket algorithm)
  • Circuit breaking
  • Metrics interface that can pump real-time metrics to outside consumer
  • Embedded API server (HTTP-based)

Discussions and contributions are welcomed!

Contributor guide

Tech stack
rust
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Rust programmingUnderstanding of Sentinel conceptsConcurrency design
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
10
Research direction
This is an RFC for a full Rust port of Sentinel. A first step would be to study the existing Java implementation (especially the sliding window and flow control modules) to understand the requirements. Then, design and implement basic statistic structures with high concurrency support. The research should focus on evaluating Rust's concurrency primitives (e.g., Arc, Mutex, crossbeam) for the sliding window. Note that this is a large, open ended feature; contributors should seek maintainer guidance on scope and incremental milestones.