Engineering With Java

Engineering With Java

Spring Boot Interview Question - Process Large Security Events File

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Suraj Mishra's avatar
Suraj Mishra
Jan 26, 2026
∙ Paid

Scenario

Our company’s security system produces daily audit logs (~10 GB CSV) with this structure:

event_id,user_id,event_type,severity,timestamp

The compliance team needs a report showing:

  1. Total number of HIGH severity events

  2. Earliest occurrence of a HIGH event

  3. Latest occurrence of a HIGH event

The logs must be processed efficiently, reliably, and be restarta…

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