API Reliability Monitoring (Retention)

API Reliability Monitoring (Retention)

1. 01

   Define uptime and latency SLOs for each client API

   Set concrete targets, such as 99.9% uptime and p95 latency under 300ms, and document them in the retainer agreement so monitoring has a contractual baseline.

2. 02

   Select a monitoring tool that matches the API's traffic profile

   For high-volume public endpoints, a gateway like Zuplo or API7 provides built-in observability, while lighter internal APIs may only need a simple uptime checker.

3. 03

   Configure alerts for error rates and latency breaches

   Set thresholds that trigger notifications before clients notice degradation, such as a 5% error rate over five minutes or p95 latency exceeding the SLO for ten minutes.

4. 04

   Review traffic and error logs weekly for anomalies

   Look for spikes in 4xx or 5xx responses, unusual request patterns, or authentication failures that could indicate a security issue or a misconfigured client integration.

5. 05

   Test API responses against the OpenAPI specification monthly

   Use a tool like Apidog to auto-validate responses, catching drift between the documented contract and the actual implementation before it breaks client integrations.

6. 06

   Document incidents and remediation steps in a shared runbook

   Maintain a living document that records each outage, its root cause, and the fix applied, so recurring issues are identified and resolved faster in future retainers.

7. 07

   Report uptime and performance metrics to the client quarterly

   Present a dashboard showing SLO attainment, incident count, and mean time to recovery, reinforcing the value of the retainer and justifying the ongoing cost.