solana-validator-optimizer

A production-grade Rust toolkit to enhance Solana validator performance by reducing sync latency and improving RPC responsiveness.

Overview

solana-validator-optimizer is a modular enhancement suite for Solana validator infrastructure. It helps operators by:

Prefetching ledger snapshots from trusted mirrors
Validating snapshot integrity via SHA-256
Auto-tuning validator configuration based on hardware resources
Adding an in-memory LRU cache for frequently used RPC calls
Exposing Prometheus metrics via a /metrics endpoint

Ideal For

Solana Validator Operators
RPC Infrastructure Maintainers
Performance-Focused Mainnet/Devnet Deployments

Core Features

Feature	Description
Snapshot Prefetching	Downloads or copies snapshots locally with optional SHA-256 validation
RPC LRU Cache	Reduces redundant RPC calls like `getBalance`, `getEpochInfo`, etc.
Prometheus Metrics	`/metrics` endpoint for cache hits, misses, request counts, and latency
Config Auto-Tuner	Adjusts validator configuration based on CPU, RAM, disk, and network

Architecture

Architecture Overview

Getting Started

1. Clone the Repository

git clone https://github.com/0rlych1kk4/solana-validator-optimizer.git
cd solana-validator-optimizer

2. Configuration

Create a Config.toml file in the project root:

# Config.toml

# Snapshot settings
snapshot_url   = ""    # e.g. "https://snapshots.myvalidator.com/latest.tar.zst"
snapshot_sha256 = ""   # optional SHA-256 checksum for validation

# RPC and Metrics
rpc_url      = "https://api.mainnet-beta.solana.com"
metrics_port = 9090    # Prometheus scrapes at http://<host>:9090/metrics

# Cache settings
cache_size = 128       # Number of entries in the RPC LRU cache

Usage – CLI Mode

Run all modules (snapshot, RPC cache, auto-tuner, metrics):

cargo run -p solana-validator-optimizer-cli --release

Usage – As a Library

Add this to your Cargo.toml:

[dependencies]
solana-validator-optimizer = "1"
tokio = { version = "1", features = ["full"] }
anyhow = "1"

Example usage:

use solana_validator_optimizer::{Optimizer, Config};

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let cfg = Config::from_file("Config.toml")?;
    let mut optimizer = Optimizer::new(cfg).await?;
    optimizer.start().await?;
    Ok(())
}

Environment Variables

You can override any Config.toml values using environment variables.

Config Key	Environment Variable
snapshot_url	`OPTIMIZER_SNAPSHOT_URL`
rpc_url	`OPTIMIZER_RPC_URL`
metrics_port	`OPTIMIZER_METRICS_PORT`
cache_size	`OPTIMIZER_CACHE_SIZE`

Example:

OPTIMIZER_RPC_URL=https://api.mainnet-beta.solana.com OPTIMIZER_CACHE_SIZE=256 cargo run -p solana-validator-optimizer-cli --release

Contributing

Contributions are welcome!
Feel free to open issues, feature requests, or pull requests.

License

Licensed under the MIT License.

solana-validator-optimizer 1.2.2