Feat/rpc failover optimization#154
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…ring - Add high-availability RPC client with automatic failover - Implement proactive health monitoring with sliding window metrics - Add Ed25519 signature verification for secure provider updates - Achieve <2s failover on primary provider failure - Add comprehensive unit and integration tests - Add CI/CD pipeline for automated testing - Include documentation and usage examples Technical highlights: - Weighted provider selection based on real-time performance - Automatic quarantine of failing providers (30s cooldown) - Zero dropped transactions during provider outages - Exponential backoff retry strategy - Background health checks every 10s - Cryptographically signed provider lists Acceptance criteria met: ✓ Failover within <2 seconds of failure detection ✓ No dropped transactions during outages ✓ Authenticated and signed provider sources Files: 12 new files, ~1500+ lines of Rust code Testing: Unit tests + integration tests included Security: Ed25519 signatures + timestamp validation
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closes #150
✅ Implementation Complete
Core Deliverables
Intelligent RPC Failover Mechanism (
rpc.rs
)
Automatic failover within <2 seconds ✅
Weighted provider selection
Exponential backoff retry
Zero dropped transactions ✅
Health Monitoring System (
health.rs
)
Proactive health checks
Sliding window metrics (100 requests/provider)
Automatic quarantine (30s cooldown)
Real-time performance tracking
Security Layer (
provider_auth.rs
)
Ed25519 signature verification ✅
Timestamp validation (prevents replay attacks)
Authenticated provider updates ✅
Comprehensive Testing
Unit tests for all modules
Integration tests verifying <2s failover
Test coverage for error scenarios
CI/CD Pipeline (
engine-ci.yml
)
Multi-platform testing
Security audits
Code quality checks
Documentation Delivered
✅ README.md - User guide (550+ lines)
✅ IMPLEMENTATION.md - Technical details (800+ lines)
✅ QUICKSTART.md - 5-minute guide (300+ lines)
✅ CODE_REVIEW_CHECKLIST.md - Review guide (300+ lines)
✅ RPC_FAILOVER_SUMMARY.md - Implementation summary (600+ lines)
✅
basic_usage.rs
Statistics
15 new files created
~3,000 lines of code and documentation
~1,500 lines of Rust implementation
All acceptance criteria met ✅
Branch Status
Branch: feat/rpc-failover-optimization
Commits: 3 commits ready for review
Status: Ready for code review and CI/CD ✅