Uptime Monitor
Background thread pings the portfolio API and site every 60 seconds, recording response times. Graphs the last 24 hours of data pulled live from the server using Canvas charts.
Ping interval
60 seconds
History
24 hours
Backend
Flask + threading
Chart
Canvas (zero deps)
Figures shown for this technical prototype are self-reported and have not been independently verified.
How it works
How It Works
Daemon thread launches with Flask app via gunicorn. Every 60 seconds: HTTP GET to each target, record status + response time in ms. Append to JSON file, keep last 1,440 entries (24h). API endpoint returns history, frontend draws Canvas chart.
Decisions
Daemon thread over cron - simpler, dies with the app. JSON file storage because 24h of 1-minute checks is only 1,440 entries (trivially small). Canvas charts over a chart library to keep dependencies at zero. Atomic file writes prevent corruption.
Security
- Atomic file writes prevent data corruption
- Read-only monitoring - no write access to monitored targets
Next step / direct enquiry
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