# SPARC Implementation Plan for RvLite

## Overview

**RvLite** (RuVector-Lite) is a standalone, WASM-first vector database with graph and semantic capabilities that runs anywhere - browser, Node.js, Deno, Bun, edge workers - without requiring PostgreSQL.

This document outlines the complete implementation using **SPARC methodology**:
- **S**pecification - Requirements, features, constraints
- **P**seudocode - High-level algorithms and data structures
- **A**rchitecture - System design and component interaction
- **R**efinement - Detailed implementation with TDD
- **C**ompletion - Integration, optimization, deployment

## Project Goals

### Primary Objectives
1. **Zero Dependencies** - No PostgreSQL, Docker, or native compilation required
2. **Universal Runtime** - Browser, Node.js, Deno, Bun, Cloudflare Workers
3. **Full Feature Parity** - All ruvector-postgres capabilities (SQL, SPARQL, Cypher, GNN, learning)
4. **Lightweight** - ~5-6MB WASM bundle (gzipped)
5. **Production Ready** - Persistent storage, ACID transactions, crash recovery

### Success Metrics
- Bundle size: < 6MB gzipped
- Load time: < 1s in browser
- Query latency: < 20ms for 1k vectors
- Memory usage: < 200MB for 100k vectors
- Browser support: Chrome 91+, Firefox 89+, Safari 16.4+
- Test coverage: > 90%

## SPARC Phases

### Phase 1: Specification (Weeks 1-2)
- [01_SPECIFICATION.md](./01_SPECIFICATION.md) - Detailed requirements analysis
- [02_API_SPECIFICATION.md](./02_API_SPECIFICATION.md) - Complete API design
- [03_DATA_MODEL.md](./03_DATA_MODEL.md) - Storage and type system

### Phase 2: Pseudocode (Week 3)
- [04_ALGORITHMS.md](./04_ALGORITHMS.md) - Core algorithms
- [05_QUERY_PROCESSING.md](./05_QUERY_PROCESSING.md) - SQL/SPARQL/Cypher execution
- [06_INDEXING.md](./06_INDEXING.md) - HNSW and graph indexing

### Phase 3: Architecture (Week 4)
- [07_SYSTEM_ARCHITECTURE.md](./07_SYSTEM_ARCHITECTURE.md) - Overall design
- [08_STORAGE_ENGINE.md](./08_STORAGE_ENGINE.md) - Persistence layer
- [09_WASM_INTEGRATION.md](./09_WASM_INTEGRATION.md) - WASM bindings

### Phase 4: Refinement (Weeks 5-7)
- [10_IMPLEMENTATION_GUIDE.md](./10_IMPLEMENTATION_GUIDE.md) - TDD approach
- [11_TESTING_STRATEGY.md](./11_TESTING_STRATEGY.md) - Comprehensive tests
- [12_OPTIMIZATION.md](./12_OPTIMIZATION.md) - Performance tuning

### Phase 5: Completion (Week 8)
- [13_INTEGRATION.md](./13_INTEGRATION.md) - Component integration
- [14_DEPLOYMENT.md](./14_DEPLOYMENT.md) - NPM packaging and release
- [15_DOCUMENTATION.md](./15_DOCUMENTATION.md) - User guides and API docs

## Implementation Timeline

```
Week 1-2: SPECIFICATION
  ├─ Requirements gathering
  ├─ API design
  ├─ Data model definition
  └─ Validation with stakeholders

Week 3: PSEUDOCODE
  ├─ Core algorithms
  ├─ Query processing logic
  └─ Index structure design

Week 4: ARCHITECTURE
  ├─ System design
  ├─ Storage engine design
  └─ WASM integration plan

Week 5-7: REFINEMENT (TDD)
  ├─ Week 5: Core implementation
  │   ├─ Storage engine
  │   ├─ Vector operations
  │   └─ Basic indexing
  ├─ Week 6: Query engines
  │   ├─ SQL executor
  │   ├─ SPARQL executor
  │   └─ Cypher executor
  └─ Week 7: Advanced features
      ├─ GNN layers
      ├─ Learning/ReasoningBank
      └─ Hyperbolic embeddings

Week 8: COMPLETION
  ├─ Integration testing
  ├─ Performance optimization
  ├─ Documentation
  └─ Beta release
```

## Development Workflow

### 1. Test-Driven Development (TDD)
Every feature follows:
```
1. Write failing test
2. Implement minimal code to pass
3. Refactor for quality
4. Document and review
```

### 2. Continuous Integration
```
On every commit:
  ├─ cargo test (Rust unit tests)
  ├─ wasm-pack test (WASM tests)
  ├─ npm test (TypeScript integration tests)
  ├─ cargo clippy (linting)
  └─ cargo fmt --check (formatting)
```

### 3. Quality Gates
- All tests must pass
- Code coverage > 90%
- No clippy warnings
- Documentation complete
- Performance benchmarks green

## Key Technologies

### Rust Crates
- **wasm-bindgen** - WASM/JS interop
- **serde** - Serialization
- **dashmap** - Concurrent hash maps
- **parking_lot** - Synchronization
- **simsimd** - SIMD operations
- **half** - f16 support
- **rkyv** - Zero-copy serialization

### JavaScript/TypeScript
- **wasm-pack** - WASM build tool
- **TypeScript 5+** - Type-safe API
- **Vitest** - Testing framework
- **tsup** - TypeScript bundler

### Build Tools
- **cargo** - Rust package manager
- **wasm-pack** - WASM compiler
- **pnpm** - Fast npm client
- **GitHub Actions** - CI/CD

## Project Structure

```
crates/rvlite/
├── docs/                   # SPARC documentation (this directory)
│   ├── SPARC_OVERVIEW.md
│   ├── 01_SPECIFICATION.md
│   ├── 02_API_SPECIFICATION.md
│   ├── 03_DATA_MODEL.md
│   ├── 04_ALGORITHMS.md
│   ├── 05_QUERY_PROCESSING.md
│   ├── 06_INDEXING.md
│   ├── 07_SYSTEM_ARCHITECTURE.md
│   ├── 08_STORAGE_ENGINE.md
│   ├── 09_WASM_INTEGRATION.md
│   ├── 10_IMPLEMENTATION_GUIDE.md
│   ├── 11_TESTING_STRATEGY.md
│   ├── 12_OPTIMIZATION.md
│   ├── 13_INTEGRATION.md
│   ├── 14_DEPLOYMENT.md
│   └── 15_DOCUMENTATION.md
│
├── src/
│   ├── lib.rs              # WASM entry point
│   ├── storage/            # Storage engine
│   │   ├── mod.rs
│   │   ├── database.rs     # In-memory database
│   │   ├── table.rs        # Table structure
│   │   ├── persist.rs      # Persistence layer
│   │   └── transaction.rs  # ACID transactions
│   ├── query/              # Query execution
│   │   ├── mod.rs
│   │   ├── sql/            # SQL engine
│   │   ├── sparql/         # SPARQL engine
│   │   └── cypher/         # Cypher engine
│   ├── index/              # Indexing
│   │   ├── mod.rs
│   │   ├── hnsw.rs         # HNSW index
│   │   └── btree.rs        # B-Tree index
│   ├── graph/              # Graph operations
│   │   ├── mod.rs
│   │   ├── traversal.rs
│   │   └── algorithms.rs
│   ├── learning/           # Self-learning
│   │   ├── mod.rs
│   │   └── reasoning_bank.rs
│   ├── gnn/                # GNN layers
│   │   ├── mod.rs
│   │   ├── gcn.rs
│   │   └── graphsage.rs
│   └── bindings.rs         # WASM bindings
│
├── tests/
│   ├── integration/        # Integration tests
│   ├── wasm/               # WASM-specific tests
│   └── benchmarks/         # Performance benchmarks
│
├── examples/
│   ├── browser/            # Browser examples
│   ├── nodejs/             # Node.js examples
│   └── deno/               # Deno examples
│
├── Cargo.toml              # Rust package config
└── README.md               # Quick start guide
```

## Next Steps

1. **Read Specification Documents** (Week 1-2)
   - Start with [01_SPECIFICATION.md](./01_SPECIFICATION.md)
   - Review [02_API_SPECIFICATION.md](./02_API_SPECIFICATION.md)
   - Understand [03_DATA_MODEL.md](./03_DATA_MODEL.md)

2. **Study Pseudocode** (Week 3)
   - Review algorithms in [04_ALGORITHMS.md](./04_ALGORITHMS.md)
   - Understand query processing in [05_QUERY_PROCESSING.md](./05_QUERY_PROCESSING.md)

3. **Review Architecture** (Week 4)
   - Study system design in [07_SYSTEM_ARCHITECTURE.md](./07_SYSTEM_ARCHITECTURE.md)
   - Plan implementation approach

4. **Begin TDD Implementation** (Week 5+)
   - Follow [10_IMPLEMENTATION_GUIDE.md](./10_IMPLEMENTATION_GUIDE.md)
   - Write tests first, then implement

## Resources

- [DuckDB-WASM Architecture](https://duckdb.org/2021/10/29/duckdb-wasm)
- [SQLite WASM Docs](https://sqlite.org/wasm)
- [wasm-bindgen Guide](https://rustwasm.github.io/wasm-bindgen/)
- [SPARC Methodology](https://github.com/ruvnet/claude-flow)

---

**Start Date**: 2025-12-09
**Target Completion**: 2025-02-03 (8 weeks)
**Status**: Phase 1 - Specification