Chained Indexers

Since indexer outputs are stored in our cloud storage, they can be re-streamed as independent data sources. This enables developers to build indexers on top of other indexers, creating a chained indexing architecture.

By leveraging this approach, complex data processing pipelines can be structured efficiently, reusing previously indexed data instead of reprocessing raw blockchain data from scratch. This improves performance, reduces redundancy, and simplifies indexer development and maintenance.

Example: Building a DeFi Indexer Pipeline

1. Raw Transaction Indexer (Base Indexer)
   • Indexes raw blockchain transactions for a specific DeFi protocol (e.g., Uniswap).
   • Extracts event logs, token swaps, liquidity additions, and removals.
   • Stores the indexed output in cloud storage.
2. Token Price Indexer (Chained Indexer #1)
   • Uses the output of the raw transaction indexer as its data source.
   • Aggregates swap events to compute historical token prices.
   • Stores the processed price data for further use.
3. Portfolio Balance Indexer (Chained Indexer #2)
   • Uses both raw transactions and computed token prices as input sources.
   • Tracks user wallet balances over time, incorporating price changes.
   • Provides real-time portfolio valuation for dApp users.

With chained indexers, each layer builds upon the previous one, making data more structured and accessible without re-indexing the entire blockchain.