🚀 RPC Optimizer

High-performance RPC optimization for EVM (Ethereum/Base) & Solana — with both Node.js and Rust implementations.

---

⚡ Performance

Metric	Node.js	Rust
Batch 5 RPC calls	188ms	53ms
Binary size	~200MB	~3MB
Cold start	~500ms	Instant

Rust is 3.5x faster for latency-critical operations like minting & arbitrage.

---

✨ Features

Feature	Node.js	Rust	Description
Benchmark RPCs	✅	✅	Auto-find fastest RPC endpoint
Multi-RPC Failover	✅	✅	Auto-switch on failures
Request Batching	✅	✅	Combine calls into 1 HTTP request
Nonce Caching	✅	✅	Pre-fetch for fast tx building
Retry + Backoff	✅	✅	Exponential/Fibonacci strategies
Rate Limiter	✅	✅	Token bucket algorithm
Circuit Breaker	✅	✅	Prevent cascade failures
WebSocket	✅	-	Real-time subscriptions
EVM Client	✅	-	High-level ETH/Base API
Solana Client	✅	-	High-level Solana API

---

🔗 Supported Chains

Chain	RPCs Included
Ethereum	Llama, PublicNode, dRPC, MEVBlocker
Base	Base Official, Llama, PublicNode, dRPC
Solana	Solana Official, PublicNode, dRPC

---

📦 Installation

Node.js

cd node
npm install
npm run example

Rust

cd rust
cargo build --release
cargo run --release

---

🚀 Quick Start

Node.js

import { createEVMClient, createSolanaClient } from './src/index.js';

// Create client
const eth = createEVMClient('ethereum');

// Auto-select fastest RPC
await eth.warmup(['0xYourWallet...']);

// Use it
const block = await eth.getBlockNumber();
const balance = await eth.getBalance('0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045');

console.log('Block:', block);
console.log('Balance:', balance, 'ETH');

Rust

use rpc_optimizer::*;

#[tokio::main]
async fn main() {
    // Benchmark and find fastest
    let config = default_config();
    let mut benchmark = create_benchmark();
    
    if let Some(eth_config) = config.get("ethereum") {
        benchmark.benchmark_chain("ethereum", eth_config, 3).await;
        benchmark.print_results("ethereum");
    }

    // Batch requests
    let result = batch("https://eth.drpc.org")
        .get_balance("0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", "latest")
        .block_number()
        .gas_price()
        .execute()
        .await;

    println!("Batch completed in {}ms", result.latency_ms);
}

---

📊 Benchmark Example

🔍 Benchmarking Ethereum Mainnet (3 rounds each)...

  Testing Llama          ... ✅ avg: 212.8ms | p95: 212.8ms
  Testing PublicNode     ... ✅ avg: 214.7ms | p95: 263.8ms
  Testing dRPC           ... ✅ avg: 50.6ms  | p95: 73.9ms
  Testing MEVBlocker     ... ✅ avg: 706.6ms | p95: 997.9ms

📊 Results for ETHEREUM
──────────────────────────────────────────────────────────────────
Rank │ Name            │ Avg (ms) │ P95 (ms) │ Min (ms) │ Success
──────────────────────────────────────────────────────────────────
   1 │ dRPC            │     50.6 │     73.9 │     33.9 │ 100%
   2 │ PublicNode      │    214.7 │    263.8 │    180.6 │ 100%
   3 │ Llama           │    212.8 │    212.8 │    212.8 │ 33%
   4 │ MEVBlocker      │    706.6 │    997.9 │    555.8 │ 100%
──────────────────────────────────────────────────────────────────

✅ Fastest: dRPC (50.6ms avg)

---

🔧 Use Cases

Use Case	Recommended
FCFS NFT Minting	Rust (microseconds matter)
Arbitrage Bot	Rust (latency critical)
MEV Bot	Rust (racing other bots)
Monitoring/Alerts	Node.js (easier to build)
Dashboard/API	Node.js (rich ecosystem)
Prototyping	Node.js (fast iteration)

---

📁 Project Structure

rpc-optimizer/
├── node/                   # Node.js implementation
│   ├── src/
│   │   ├── index.js        # Main exports
│   │   ├── config.js       # RPC configuration
│   │   ├── benchmark.js    # Latency testing
│   │   ├── failover.js     # Multi-RPC failover
│   │   ├── batch.js        # Request batching
│   │   ├── nonce.js        # Nonce caching
│   │   ├── retry.js        # Retry strategies
│   │   ├── websocket.js    # WebSocket support
│   │   └── chains/
│   │       ├── evm.js      # ETH/Base client
│   │       └── solana.js   # Solana client
│   ├── config/
│   │   └── rpcs.json       # RPC endpoints
│   ├── examples/
│   │   └── usage.js        # Example usage
│   └── package.json
│
└── rust/                   # Rust implementation
    ├── src/
    │   ├── lib.rs          # Library exports
    │   ├── main.rs         # Example runner
    │   ├── config.rs       # RPC configuration
    │   ├── benchmark.rs    # Latency testing
    │   ├── failover.rs     # Multi-RPC failover
    │   ├── batch.rs        # Request batching
    │   ├── nonce.rs        # Nonce caching
    │   └── retry.rs        # Retry strategies
    └── Cargo.toml

---

🤝 Contributing

1. Fork the repo
2. Create feature branch (git checkout -b feature/amazing)
3. Commit changes (git commit -m 'Add amazing feature')
4. Push to branch (git push origin feature/amazing)
5. Open a Pull Request

---

📄 License

MIT License - feel free to use in your projects!

---

🔗 Related Projects

• bounty-radar - Bug bounty research dashboard
• github-radar - Trending GitHub repos tracker
• hf-radar - HuggingFace trending tracker

---

Built with ⚡ by @xnotok