HeliosDB Load Testing Framework

HeliosDB Load Testing Framework

Comprehensive load testing and chaos engineering framework for Phase 2 Milestone 1 validation.

Features

• Concurrent Load Testing: 1K, 10K, 100K concurrent requests
• Chaos Engineering: Failure injection (node failures, partitions, disk full, etc.)
• Performance Metrics: Latency percentiles (P50, P95, P99), throughput, error rates
• Comprehensive Reporting: Terminal, HTML, and JSON reports
• Feature-Specific Tests: All 8 Phase 2 M1 features tested

Quick Start

# Run a quick smoke test
cargo run --bin load-test smoke

# Run 1K concurrent users load test (60 seconds)
cargo run --bin load-test load --level 1k --duration 60

# Run 10K concurrent users load test (120 seconds)
cargo run --bin load-test load --level 10k --duration 120

# Run 100K concurrent users load test (300 seconds)
cargo run --bin load-test load --level 100k --duration 300

# Run chaos engineering tests
cargo run --bin load-test chaos --scenarios all

# Run specific chaos scenario
cargo run --bin load-test chaos --scenarios node

# Run full test suite
cargo run --bin load-test full

Usage

Load Testing

# Basic load test
cargo run --bin load-test load --level 1k

# Custom configuration
cargo run --bin load-test load \
  --level 1k \
  --duration 120 \
  --users 1000 \
  --mode mixed

# Test modes:
# - read: Read-only queries
# - write: Write-only operations
# - mixed: 70% reads, 30% writes
# - complex: Complex queries (joins, aggregations)

Chaos Engineering

# Run all chaos scenarios
cargo run --bin load-test chaos --scenarios all

# Run specific scenario
cargo run --bin load-test chaos --scenarios node
cargo run --bin load-test chaos --scenarios partition
cargo run --bin load-test chaos --scenarios disk
cargo run --bin load-test chaos --scenarios memory
cargo run --bin load-test chaos --scenarios slow
cargo run --bin load-test chaos --scenarios connection
cargo run --bin load-test chaos --scenarios cpu
cargo run --bin load-test chaos --scenarios cascade

Report Generation

# Generate terminal report
cargo run --bin load-test report --input ./load-test-results/report-20251031-200000.json

# Generate HTML report
cargo run --bin load-test report \
  --input ./load-test-results/report-20251031-200000.json \
  --format html

# View JSON report
cargo run --bin load-test report \
  --input ./load-test-results/report-20251031-200000.json \
  --format json

Chaos Scenarios

Scenario	Description	Expected Behavior
Node Failure	Kill 1-3 nodes randomly	Automatic failover within 5 minutes
Network Partition	Split cluster into partitions	Partition tolerance, eventual consistency
Disk Full	Simulate storage exhaustion	Graceful degradation, alerts triggered
Memory Pressure	Force OOM conditions	Memory management, swap usage
Slow Dependency	Inject 500-2000ms latency	Request timeout, retry logic
Connection Loss	Drop database connections	Connection pool recovery
CPU Saturation	Saturate CPU to 95%+	Resource throttling, queue management
Cascading Failure	Trigger chain of failures	Circuit breakers, isolation

Performance Targets

1K Concurrent Users

• Success Rate: ≥99.9%
• P99 Latency: <100ms
• Throughput: ≥1,000 req/s

10K Concurrent Users

• Success Rate: ≥99.9%
• P99 Latency: <500ms
• Throughput: ≥10,000 req/s

100K Concurrent Users

• Success Rate: ≥99%
• P99 Latency: <2000ms
• Throughput: ≥50,000 req/s

Report Formats

Terminal Report

Colored, formatted output to terminal with key metrics.

HTML Report

Comprehensive HTML report with:

• Performance metrics table
• Chaos engineering results
• Visual formatting and charts
• Export-ready format

JSON Report

Machine-readable JSON format for:

• CI/CD integration
• Historical tracking
• Automated analysis

Architecture

heliosdb-load-test/
├── src/
│   ├── lib.rs           # Library entry point
│   ├── main.rs          # CLI application
│   ├── config.rs        # Configuration types
│   ├── executor.rs      # Load test execution engine
│   ├── metrics.rs       # Performance metrics collection
│   ├── scenarios.rs     # Test scenarios
│   ├── chaos.rs         # Chaos engineering
│   └── reporter.rs      # Report generation
├── Cargo.toml
└── README.md

Integration with CI/CD

# Run in CI pipeline
cargo run --bin load-test smoke || exit 1
cargo run --bin load-test load --level 1k --duration 30 || exit 1

# Check results programmatically
if [ -f ./load-test-results/latest.json ]; then
    success_rate=$(jq '.metrics.error_rate' ./load-test-results/latest.json)
    if [ "$success_rate" -lt "0.001" ]; then
        echo "Success rate within SLA"
    else
        echo "Success rate below SLA"
        exit 1
    fi
fi

Development

# Build
cargo build --release

# Run tests
cargo test

# Run with verbose logging
cargo run --bin load-test load --level 1k --verbose

# Clean up old reports
rm -rf ./load-test-results/*

Future Enhancements

• Real database integration (currently simulated)
• Distributed load generation across multiple machines
• Real-time monitoring dashboard
• Automated performance regression detection
• Cloud provider integration (AWS, Azure, GCP)
• Custom scenario DSL for complex workflows

License

Copyright © 2025 HeliosDB. All rights reserved.