Site Health Checker

Python CLI application for monitoring website availability and response time.

The application reads a list of websites from a YAML configuration file, performs HTTP health checks concurrently, stores results in SQLite and generates aggregated monitoring statistics.

Features

• HTTP availability monitoring
• Response-time measurement
• HTTP status code tracking
• Concurrent website checks using ThreadPoolExecutor
• SQLite history storage
• Aggregated availability statistics
• JSON statistics export
• File-based logging
• Continuous monitoring mode
• YAML-based configuration
• Configurable list of monitored websites

Tech Stack

Technology	Purpose
Python	Main programming language
Requests	HTTP health checks
SQLite	Monitoring history
PyYAML	Configuration
ThreadPoolExecutor	Concurrent checks
JSON	Statistics export

How It Works

config.yaml
    │
    ▼
List of websites
    │
    ▼
ThreadPoolExecutor
    │
    ├── HTTP request
    ├── HTTP status
    └── Response time
    │
    ▼
SQLite database
    │
    ├── History
    └── Aggregated statistics
            │
            ▼
        stats.json