What is Data Streaming on Solana?

Data streaming allows applications to receive real-time updates from the Solana blockchain as events occur on-chain. Instead of repeatedly polling for updates, streaming establishes persistent connections that push data to your application instantly when transactions are processed, accounts change, or blocks are produced.

This is essential for applications that require up-to-the-second data such as:

  • Trading applications monitoring price changes and liquidations
  • DeFi protocols tracking user interactions and state changes
  • NFT marketplaces detecting sales, listings, and transfers
  • Analytics platforms collecting comprehensive blockchain metrics
  • Wallets showing real-time balance and transaction updates

Why Choose Helius for Data Streaming?

Ultra-Low Latency

Direct connections to Solana leaders ensure sub-second data delivery

Enterprise Reliability

Multi-node redundancy and automatic failover for 99.9% uptime

Historical Replay

Never miss data with automatic backfill capabilities

Global Infrastructure

Endpoints in multiple regions for optimal performance worldwide

Helius Streaming Solutions

We offer multiple streaming options to match your application’s specific needs, from simple WebSocket connections to enterprise-grade streaming infrastructure.

LaserStream (Professional+)

Next-generation streaming with advanced features

LaserStream

High-performance streaming with gRPC protocol, historical replay, and multi-node reliability

Key Features:

  • Historical Replay: Automatically backfill up to 3000 slots (~20 minutes) of missed data
  • Multi-Protocol Support: gRPC available now, WebSockets coming soon
  • Auto-Reconnection: Built-in connection management with intelligent retry logic
  • Global Endpoints: Available in 7+ regions worldwide for optimal latency
  • Drop-in Replacement: Compatible with existing Yellowstone gRPC implementations

Best For: Backend services, high-throughput applications, mission-critical systems requiring guaranteed data delivery

Enhanced WebSockets (Business+)

High-performance WebSockets with advanced filtering

Enhanced WebSockets

Faster WebSocket connections with enhanced account and transaction subscriptions

Key Features:

  • Faster Response Times: Optimized for lower latency than standard WebSockets
  • Enhanced Filtering: Advanced subscription options for precise data targeting
  • Account & Transaction Subscriptions: Monitor specific accounts or transaction patterns
  • Atlas Infrastructure: Powered by our high-performance streaming backend

Best For: Real-time frontend applications, moderate-volume backends, custom filtering requirements

Standard WebSockets

Solana-compatible WebSocket API with Helius reliability

Standard WebSockets

Standard Solana WebSocket methods enhanced with Helius infrastructure reliability

Key Features:

  • Full Compatibility: Works with any Solana WebSocket client library
  • Standard Methods: All supported Solana subscription types (accounts, programs, logs, signatures, slots)
  • Multiple Networks: Available on mainnet and devnet
  • Helius Reliability: Enhanced uptime and performance over standard RPC nodes

Best For: Existing applications, standard use cases, broad compatibility requirements

Webhooks

Event-driven notifications delivered to your endpoints

Webhooks

Server-to-server event notifications for specific on-chain activities

Key Features:

  • Parsed Event Data: Human-readable transaction data for sales, swaps, and more
  • Multiple Types: Enhanced, raw, and Discord webhook options
  • Transaction Filtering: Subscribe to specific event types and addresses
  • Reliable Delivery: Automatic retries and delivery confirmations

Best For: Event-driven architectures, notification systems, integrations with external services

Getting Started

1

Choose Your Solution

Select the streaming method that best fits your application requirements and infrastructure.

2

Get Your API Key

Sign up at dashboard.helius.dev and obtain your API key.

3

Follow the Quickstart

Each solution has dedicated quickstart guides and code examples.

4

Monitor & Scale

Use the Helius dashboard to monitor usage and scale your plan as needed.

Data Streaming Quickstart

Get up and running with your first streaming connection in minutes

Support & Community

Ready to start streaming Solana data? Choose your preferred method above and dive into the documentation!