Case Study — SaaS

SiteGuard Uptime Monitor

A monitoring service checking HTTP/TCP endpoints every minute, alerting via SMS, Slack, or email.

Project Overview

SiteGuard monitors company websites for downtime. It executes request checks, logs response latency, and sends instant alerts via Twilio and Slack if error status codes are returned.

Key Features & Scope

Continuous site uptime monitoring intervals running every 60 seconds

Multi-channel warning alerts integrated with Slack, SMS, and email templates

Response time tracking graphs monitoring global connection speeds

Public status page builders displaying service uptime history for users

System Architecture

NestJS scheduler node executing parallel request probes. Monitoring tasks are cached in Redis to maintain fast polling intervals.

Client InterfaceNext.js / React
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Backend CoreNestJS API
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Database NodePostgreSQL & Redis
Database: PostgreSQL & Redis
Deployment: DigitalOcean Droplet & Vercel
97
Performance
96
Accessibility
98
Best Practices
100
SEO
Verified Production Metrics
ReactNestJSRedisPostgreSQLTwilioSendGridTypeScript

Keywords and concepts covered in this project case study:

SiteGuard Uptime MonitorNestJS cron service checksTwilio API SMS downtime warningUptime status page SaaS

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