Incident Date
June 03, 2026
Executive Summary
On June 03, 2026, our Socket Server experienced intermittent connection issues affecting approximately 2.3% of active users for a duration of 6 minutes. The issue was identified, investigated, and resolved promptly by our engineering team.
Timeline
23:07 UTC
Monitoring systems detected increased response times on Socket Server
23:10 UTC
On-call engineer initiated investigation and identified memory leak in connection pooling service
23:12 UTC
Patch deployed to staging environment for verification
23:13 UTC
Fix deployed to production, all services restored to normal operation
Root Cause
A memory leak was discovered in our connection pooling service that manages WebSocket connections. The leak caused gradual memory consumption over time, leading to performance degradation when available memory became limited. This particularly affected new connection establishments and caused intermittent connection drops for existing sessions.
Resolution
Our engineering team deployed a patch that fixed the memory leak in the connection pooling service. The affected services were restarted in a rolling fashion to maintain service availability. All active connections were gracefully transferred to healthy instances during the restart process.
Impact Analysis
- Affected Users: ~2.3% of active users (approximately 287 concurrent connections)
- Average Delay: 3.2 seconds for connection establishment
- Message Delivery: No messages were lost; some experienced delivery delays of up to 5 seconds
- Data Loss: None. All data integrity checks passed successfully
Preventive Measures
- Enhanced memory leak detection in our monitoring systems
- Implemented automated memory profiling for connection pooling services
- Added additional capacity headroom to handle traffic spikes
- Improved alerting thresholds for early detection of similar issues