What Is This?

A full, batteries-included implementation of a highly scalable transaction-sending pipeline for Solana.

This implementation is part of a larger project implementing bot services, with this component open-sourced to support scalable transaction pipelines.

Features

• Provides a unified interface for maintaining a view of network state via gRPC streaming, RPC polling, or both
• Allows fine-grained combination of multiple cluster endpoints with different sources or levels of commitment
• Highly performant, asynchronous transaction-sending service
• Sends transactions to RPC or Jito block engine over RPC or gRPC
• Sends bundles to Jito over RPC or gRPC
• Supports transaction confirmation via Solana RPC/gRPC and bundle confirmation via Jito RPC
• Supports retries with custom priority fee and tip increments per retry
• Tracks detailed metrics for collecting landing statistics

Roadmap

• Track leader schedule and send transactions directly to leader TPU

Dependencies(and inclusions)

• graceful-core: Unified transaction type and traits
• graceful-tx-logs: Fast and complete log-parsing implementation