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Midnight Indexer

The Midnight Indexer is a set of components designed to optimize the flow of blockchain data from a Midnight node to end-user applications. It retrieves history of blocks, processes them, stores indexed data efficiently, and provides a GraphQL API for queries and subscriptions.

27 May 2025

Midnight Indexer 2.1.2 Release Notes​

Stable Release​

  • Version: 2.1.2
  • Audience: Node operators, developers integrating with the Midnight ecosystem
  • Environment: Production-ready

This release (2.1.2) is considered stable and production-ready. It can safely be deployed in public and production environments.

Key Changes & Highlights​

note

This release requires wallet-sdk v5.0.0+ (compatible with Lace Wallet v3.0.0 or higher).

Changelog​

Bug fixes​

  • Make viewing update stream infinite

Compatibility​

  • Midnight Ecosystem: Fully compatible with Midnight Node 0.12 and related infrastructure.
  • Operating Systems: Fully tested on Linux, with limited support for Windows and macOS.

Additional Resources​

  • Community Support: Join the discussion on Discord

Upgrade/Migration Guide​

Prerequisites​

  • PostgreSQL installed and configured (for production)
  • Network access to a Midnight node

Installation & Migration​

  • Deploy new indexer binary
  • Connect to appropriate backend (SQLite or PostgreSQL)
  • Point your API integration to the new endpoint

Post-Upgrade Checks​

  • Confirm GraphQL queries resolve as expected
  • Monitor logs for error-free startup