Failure Modes

Understanding and handling failure scenarios.

Component Failures

Ingestion Failure

• Symptoms: Data stops flowing
• Detection: Monitoring alerts
• Impact: Data loss risk
• Mitigation: Client buffering, redundant endpoints

Processing Failure

• Symptoms: Backlog growth
• Detection: Queue depth alerts
• Impact: Delayed processing
• Mitigation: Automatic recovery, manual intervention

Storage Failure

• Symptoms: Query failures
• Detection: Health checks
• Impact: Data access issues
• Mitigation: Replication, failover

Detection Failure

• Symptoms: Symptoms not created
• Detection: Rate monitoring
• Impact: Missed conditions
• Mitigation: State recovery, replay

Network Failures

Connectivity Loss

Devices lose connection to platform:

• Buffer at device/gateway
• Automatic reconnection
• Data replay on recovery

Partition

Internal network issues:

• Graceful degradation
• Automatic healing
• No data loss

Recovery Procedures

Automatic Recovery

Most failures recover automatically:

• Component restart
• State restoration
• Traffic rerouting

Manual Intervention

Some scenarios require manual action:

• Configuration issues
• Resource exhaustion
• Cascading failures

Incident Response

Follow incident procedures:

• Detect and alert
• Assess impact
• Mitigate immediate
• Root cause analysis
• Prevent recurrence