Why Monitor PostgreSQL Availability
The Cost of Downtime
When a PostgreSQL database goes offline, the impact goes far beyond infrastructure. Applications stop working, transactions are lost, and user experience is severely affected.
Studies show that the average cost of downtime for companies ranges between $5,600 and $9,000 per minute. For an e-commerce, that means lost sales. For a SaaS, that means churn.
The Problem of Late Detection
Most teams discover their database is down when users complain. This happens because:
- There is no active availability monitoring
- Existing alerts are too generic (CPU, memory) and don’t capture actual unavailability
- The operations team relies on manual checks
What to Monitor
To ensure availability, you need to verify:
- TCP Connectivity — Is PostgreSQL accepting connections on the configured port?
- Response Time — Is latency within expected range?
- Continuity — Is the instance responding consistently over time?
How Argus DBA Solves This
Argus DBA installs a lightweight agent on the server that:
- Runs availability checks every 10 seconds
- Detects failures instantly and creates automated incidents
- Sends email alerts when something goes down — and when it recovers
- Maintains a complete history of incidents with duration
The agent is a ~10MB Go binary with no dependencies, using a pull model (no firewall ports needed).
Conclusion
Monitoring availability is not a luxury — it’s a basic necessity for any application that depends on PostgreSQL. With Argus DBA, you can get started in less than 2 minutes, for free.
Ready to get started? See how to install the agent in 2 minutes →