Root Cause Analysis — Service Degradation, March 3, 2026

Duration: Approximately 1 hour and 45 minutes of degraded service (8:15 AM – 10:00 AM AST), including ~26 minutes of confirmed downtime.

Impact: Users experienced intermittent errors and slow response times across the platform during the affected window.

What Happened

During a routine production deployment, a database connection pooling configuration that was appropriate for our previous architecture caused connection saturation under our current distributed service topology. This resulted in degraded API response times and intermittent errors as services competed for available database connections.

Root Cause

As our backend architecture has evolved from fewer, larger services to a more distributed model, the database connection pool size per service remained at a level originally tuned for the earlier topology. During deployment, fresh service initialization across multiple services simultaneously opened connections at a rate that exceeded the capacity of our database connection proxy, leading to request queuing and timeouts.

Resolution
- Database connection pool sizes were right-sized for the current service architecture
- Connection proxy settings were optimized to better handle the distributed service topology
- All services were confirmed healthy and operating within normal parameters by 10:00 AM AST

Preventive Measures

Connection pool audit — All services have been updated with pool configurations appropriate for our current architecture
Infrastructure change previews — We are adding deployment pipeline checks that surface infrastructure changes for review before reaching production
Improved resource defaults — Platform-wide service defaults have been updated to reflect current operational requirements
Current Status

All services are operating normally. No data was lost or corrupted during this incident.