PrkDB v2 Development Roadmap & Summary

Status Check

Current Version: v2.0-clean
Build Status: Passing ✅
Test Coverage: Core modules covered (Raft, Sharding, Storage)

🚀 Completed Features (v2.0)

1. Raft Consensus

[x] Pre-Vote Protocol: Prevents disruptive elections from partitioned nodes (verified by chaos tests).
[x] Replication Modes:
- Linearizable: Strong consistency (Leader read)
- Stale: High availability (Local read)
- Follower: Balances load (ReadIndex)

2. Advanced Sharding

[x] Consistent Hashing: ConsistentHashRing with virtual nodes for minimal rebalancing.
[x] Range Partitioning: RangePartitioner for ordered key access patterns.
[x] Performance: ~1.56B routing ops/sec (641ps latency).

3. Infrastructure

[x] Cleanup: Removed ~70 redundant files; repo size optimized.
[x] Testing: Fast unit tests (<1s for core); comprehensive chaos suite.

🔮 Future Roadmap (v2.1+)

Performance Optimization

[ ] SIMD Vectorization: Optimize range scans and aggregations.
[ ] Zero-Copy Networking: Use io_uring for faster replication.
[ ] Compaction Strategies: Leveled compaction for segmented logs.

Distributed Features

[ ] Dynamic Rebalancing: Auto-move partitions based on load.
[ ] Cross-Region Replication: Asynchronous geo-replication.
[ ] Distributed Transactions: 2PC over Raft for multi-partition atomic commits.

Developer Experience

[ ] Web Dashboard: React/Next.js admin UI for cluster management.
[ ] SQL Layer: Expand prkdb-orm with more SQL dialect support.
[ ] Native Clients: Go and Python clients.

Performance Baselines

Metric	Value	Note
Write Throughput	199K ops/s	Batch writes
Read Throughput	8.5M ops/s	Single key lookup
Partition Routing	1.56B ops/s	Consistent hashing
Cache Hits	10.4M ops/s	LRU Cache

Getting Started

bash

# Run unit tests
cargo test

# Start a local cluster
./scripts/start_cluster.sh