Skip to main content

Query Engine

QuantaDB's query engine provides a powerful and flexible way to query your data with automatic optimization.

Overview​

The query engine automatically:

  • Optimizes query performance
  • Handles complex queries
  • Manages indexes
  • Provides type-safe queries
  • Supports real-time updates

Key Features​

1. Query Builder​

  • Fluent API
  • Type-safe queries
  • Automatic optimization
  • Chainable methods

2. Index Management​

  • Automatic index creation
  • Index optimization
  • Composite indexes
  • Range queries

3. Real-time Updates​

  • Stream-based watching
  • Change detection
  • Incremental updates
  • Efficient propagation

Usage​

You don't need to write complex queries. QuantaDB provides a simple, intuitive API:

// Example of what you actually write
final users = await db.users
    .where((u) => u.age > 18)
    .orderBy((u) => u.name)
    .limit(10)
    .find();

Internal Architecture​

Note: The following sections explain the internal architecture. This is all handled automatically by QuantaDB.

Query Processing​

  1. Query parsing
  2. Optimization
  3. Execution planning
  4. Result processing

Index Usage​

  • Automatic index selection
  • Index maintenance
  • Query optimization
  • Cache management

Performance Features​

  • Query caching
  • Result streaming
  • Batch processing
  • Memory optimization

Error Handling​

The system automatically handles:

  • Query validation
  • Error recovery
  • Type checking
  • Resource management

Future Enhancements​

Planned improvements include:

  • Advanced query optimization
  • More index types
  • Better caching
  • Enhanced streaming