Optimize RPC Failover Latency

[grantfox-oss]

Description

Implement an intelligent, high-availability RPC failover mechanism to maintain protocol liveness.

Problem Statement

The engine currently relies on a static RPC provider. If the provider experiences jitter or downtime, the transaction submission stalls, leading to unnecessary delays in task execution and poor user experience for Guardians.

Technical Requirements

• Requirement: Maintain a weighted list of secondary RPC providers.
• Requirement: Implement a health-check monitor that proactively tests endpoints before routing traffic.

Implementation Guide

• Suggested Approach: Create a background task in src/engine/rpc.rs that maintains a sliding window of successful/failed requests per provider.
• Branch Strategy: git checkout -b feat/rpc-failover-optimization
• Affected Areas: src/engine/rpc.rs

Acceptance Criteria

• Engine switches to secondary provider within <2 seconds of primary failure detection.
• No dropped transactions during a simulated provider outage.

Security & Audit Considerations

• Provider list must be fetched from an authenticated and signed source.

Definition of Done

• Code reviewed
• CI/CD passed

[YfengJ]

Hi maintainers, I would like to apply for this issue if it is available. If assigned, I will keep the change focused on the RPC failover path: add a small provider health model with sliding success/failure tracking, route requests to healthy providers by weight, keep fallbacks deterministic for tests, and cover failover/latency behavior without changing unrelated engine flows.

[spiffamani]

I'm a full-stack Software Engineer
I'd love to take this on — thanks for considering me

[spiffamani]

I'm a full-stack Software Engineer
I'd love to take this on — thanks for considering me

[gloskull]

Hello, I have 4 years of experience delivering solutions for projects like this, covering backend, frontend, and smart contract development. After carefully reviewing your requirements, I have a clear understanding of the task and am confident in my ability to deliver a clean, efficient, and thoroughly tested solution on time. I prioritize code quality, maintainability, and industry best practices throughout the development process. My PR will be submitted in under 10hours.

[nanaabdul1172]

Hello,

I am excited to contribute to this issue. I have experience collaborating on open-source projects and understand the importance of clear communication and reliable delivery. If assigned, I will provide consistent progress updates and a well-tested implementation.

I would appreciate the opportunity to work on this issue.

[grantfox-oss]

🦊 GrantFox — @nanaabdul1172 has been assigned to this issue!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #150)
2. Your PR will be reviewed by the Vero-protocol maintainers

Good luck! Track your progress on GrantFox.