Hld
System Design
Medium
AuditTrail: Immutable Compliance Logging
Design a system to capture and store every CLI command executed across a fleet of 200,000 servers. Logs must be immutable, searchable by security auditors for 7 years, and provide cryptographic proof that no records have been deleted or altered since ingestion.
Key concepts
append-only storagecryptographic verificationdata sharding
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