Decentralized Indexing Protocol

A robust blockchain-based protocol for distributed data indexing built with Clarity smart contracts on the Stacks blockchain.

Overview

The Decentralized Indexing Protocol (DIP) provides a scalable solution for managing and querying distributed data indexes across a network of nodes. This protocol implements sharded data storage, distributed query processing, and an incentivized node participation system.

Features

Core Features

• Sharded Data Storage: Optimized data distribution across network nodes
• Time-Range Based Indexing: Efficient temporal data organization
• Stake-Based Node Participation: Economic incentives for node operators
• Configurable Storage Parameters: Flexible sharding and redundancy settings
• Query Processing System: Distributed query handling capabilities

Enhanced Features (Phase 2)

• Advanced Sharding Management: Dedicated shard creation and tracking
• Performance Scoring: Node performance monitoring and tracking
• Enhanced Query Processing: Configurable operation support and complexity management
• Improved Storage Configuration: Customizable replication strategies and consistency levels

Technical Architecture

Core Components

1. IndexNodes

   • Node identification and management
   • Data type specification
   • Time range assignment
   • Storage location tracking
   • Query endpoint registration
   • Stake management
   • Performance scoring
   • Shard assignment tracking

2. Shards

   • Size tracking
   • Node assignments
   • Data type specification
   • Time range management
   • Sealing status

3. Storage Configuration

   • Shard size configuration
   • Redundancy factor settings
   • Compression options
   • Replication strategy
   • Consistency level management

4. Query Processors

   • Operation support tracking
   • Complexity management
   • Timeout configuration

Error Handling

Error Codes

• ERR_UNAUTHORIZED (u100): Unauthorized access attempt
• ERR_INVALID_DATA (u101): Invalid data provided
• ERR_INSUFFICIENT_STAKE (u102): Stake amount below minimum
• ERR_INVALID_SHARD (u103): Invalid shard operation
• ERR_NODE_NOT_FOUND (u104): Node not found in system

Validation Checks

• Time range validation
• Storage configuration validation
• Node existence verification
• Shard availability checking
• Stake requirement verification

Smart Contract Interface

Principal Functions

;; Node Registration
(define-public (register-node-v2 
    (node-id uint) 
    (data-type (string-ascii 64))
    (start-time uint)
    (end-time uint)
    (storage-location (string-ascii 256))
    (query-endpoint (string-ascii 256))
    (stake-amount uint))
)

;; Shard Management
(define-public (create-shard 
    (shard-id uint)
    (data-type (string-ascii 64))
    (time-range-start uint)
    (time-range-end uint))
)

;; Storage Configuration
(define-public (configure-storage-v2
    (config-id uint)
    (shard-size uint)
    (redundancy-factor uint)
    (compression-enabled bool)
    (replication-strategy (string-ascii 32))
    (consistency-level uint))
)

Setup and Deployment

Prerequisites

• Stacks blockchain development environment (version 2.0 or higher)
• Clarity CLI tools
• Node.js (v14.0.0 or higher)
• NPM (v6.0.0 or higher)

Installation

1. Clone the repository:

   git clone [repository-url]
   cd decentralized-indexing-protocol

2. Install dependencies:

   npm install

3. Configure environment:

   cp .env.example .env
   # Edit .env with your settings

Development

1. Start local Stacks blockchain:

   clarinet integrate

2. Deploy contract:

   clarinet deploy

3. Run tests:

   clarinet test

Configuration Parameters

Parameter	Description	Default Value	Valid Range
Shard Size	Size of each data shard	1000 records	> 0
Redundancy Factor	Number of replica copies	3	≥ 1
Minimum Stake	Required stake amount	1000 STX	≥ 1000
Consistency Level	Required consistency level	2	≤ Redundancy Factor

Testing

Unit Tests

clarinet test tests/unit/*

Integration Tests

clarinet test tests/integration/*

Project Roadmap

Phase 1 (Completed)

• Basic indexing functionality
• Node registration system
• Simple sharding implementation

Phase 2 (Current)

• Advanced sharding system with dedicated management
• Performance-based node scoring
• Enhanced query processing infrastructure
• Improved storage configuration with replication strategies
• Comprehensive error handling and validation
• Debug and optimization improvements

Future Phases

• Advanced incentive mechanisms
• Cross-shard query optimization
• Dynamic node rebalancing
• Enhanced security features
• Advanced data validation

Debugging and Troubleshooting

Common Issues

1. Node Registration Failures

   • Verify stake amount meets minimum requirement
   • Ensure unique node ID
   • Check time range validity

2. Shard Creation Issues

   • Verify shard ID uniqueness
   • Check time range parameters
   • Ensure proper data type specification

3. Query Processing Errors

   • Verify node existence
   • Check operation support
   • Monitor timeout configurations

Logging and Monitoring

• Contract events for major operations
• Performance metrics tracking
• Error tracking and reporting

Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Development Guidelines

• Follow Clarity best practices
• Include comprehensive tests
• Update documentation
• Add proper error handling

License

This project is licensed under the MIT License - see the LICENSE file for details.