> ## Documentation Index
> Fetch the complete documentation index at: https://injectivelabs-docs-ai-sdk.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Streaming the Indexer

This section covers how to stream real-time data from the Injective Indexer API using StreamManagerV2.

## StreamManagerV2

StreamManagerV2 provides an event-based architecture for managing gRPC streams with automatic retry, exponential backoff, and comprehensive error handling.

### Key Features

* **Event-based lifecycle** - Listen to connect, disconnect, error, and data events
* **Automatic retry** - Configurable exponential backoff with retry limits
* **Error handling** - Distinguishes retryable vs non-retryable errors
* **Persistent mode** - Continue retrying indefinitely after max attempts
* **Fine-grained control** - Start, stop, and manage stream lifecycle

### Basic Usage

```ts theme={null}
import { getNetworkEndpoints, Network } from '@injectivelabs/networks'
import { 
  StreamManagerV2,
  IndexerGrpcSpotStreamV2 
} from '@injectivelabs/sdk-ts/client/indexer'

const endpoints = getNetworkEndpoints(Network.Testnet)
const stream = new IndexerGrpcSpotStreamV2(endpoints.indexer)

const streamManager = new StreamManagerV2({
  id: 'my-stream',
  streamFactory: () => stream.streamOrders({ 
    marketId: '0x...',
    callback: (response) => {
      streamManager.emit('data', response)
    }
  }),
  onData: (data) => {
    console.log(data)
  },
  retryConfig: {
    enabled: true,
    maxAttempts: 5,
    initialDelayMs: 1000,
    maxDelayMs: 30000,
    backoffMultiplier: 2,
    persistent: true
  }
})

// Event listeners
streamManager.on('connect', () => console.log('Connected'))
streamManager.on('disconnect', (reason) => console.log('Disconnected:', reason))
streamManager.on('error', (error) => console.error('Error:', error))
streamManager.on('stateChange', ({ from, to }) => console.log(`State: ${from} -> ${to}`))

// Start/stop
streamManager.start()
streamManager.stop()
```

### Available Stream Classes

* `IndexerGrpcAccountStreamV2` - Account balance and transaction streams
* `IndexerGrpcAccountPortfolioStreamV2` - Portfolio value streams
* `IndexerGrpcArchiverStreamV2` - Archiver data streams
* `IndexerGrpcAuctionStreamV2` - Auction bid streams
* `IndexerGrpcDerivativesStreamV2` - Derivatives market streams
* `IndexerGrpcExplorerStreamV2` - Blockchain explorer streams
* `IndexerGrpcMitoStreamV2` - Mito vault streams
* `IndexerGrpcOracleStreamV2` - Oracle price feed streams
* `IndexerGrpcSpotStreamV2` - Spot market streams
* `IndexerGrpcTradingStreamV2` - Trading automation streams

### Retry Configuration

```ts theme={null}
retryConfig: {
  enabled: true,           // Enable/disable retry
  maxAttempts: 5,          // Max retry attempts (0 = unlimited)
  initialDelayMs: 1000,    // Initial backoff delay
  maxDelayMs: 30000,       // Maximum backoff delay
  backoffMultiplier: 2,    // Exponential backoff multiplier
  persistent: true         // Continue with max delay after maxAttempts
}
```

### Event Types

* `connect` - Stream successfully connected
* `disconnect` - Stream disconnected with reason
* `error` - Stream error occurred
* `data` - New data received
* `stateChange` - Stream state changed
* `retry` - Retry attempt started
* `warn` - Warning message

## Stream Examples

* [Account](/developers-native/query-indexer-stream/account/) - Stream account updates
* [Archiver](/developers-native/query-indexer-stream/archiver/) - Stream archiver data
* [Auction](/developers-native/query-indexer-stream/auction/) - Stream auction updates
* [Derivatives](/developers-native/query-indexer-stream/derivatives/) - Stream derivatives market updates
* [Explorer](/developers-native/query-indexer-stream/explorer/) - Stream explorer updates
* [Mito](/developers-native/query-indexer-stream/mito/) - Stream Mito vault updates
* [Oracle](/developers-native/query-indexer-stream/oracle/) - Stream oracle price updates
* [Portfolio](/developers-native/query-indexer-stream/portfolio/) - Stream portfolio updates
* [Spot](/developers-native/query-indexer-stream/spot/) - Stream spot market updates
* [Trading](/developers-native/query-indexer-stream/trading/) - Stream trading automation updates