Immutable audit logs with a load balancer stop doubt before it starts. Every request, every connection, every failover path is recorded. No edits. No deletions. No hiding. The log is fixed in place, cryptographically sealed, and distributed for durability.
A load balancer spreads traffic. It chooses servers based on rules—round robin, least connections, latency scores. But without immutable audit logs, you have blind spots. Suspicious activity slips past unnoticed. Post-mortems turn into guesswork. Immutable logs pair with your load balancer to close the loop. Every decision it makes, every packet it routes, every IP it touches, is stored in a chain that cannot be broken.
Designing this means integrating secure logging endpoints directly into the load balancer layer. Use append-only databases or blockchain-backed storage to ensure immutability. Encrypt logs at rest and in transit. Synchronize time stamps across the cluster. For high-traffic systems, stream logs to multiple availability zones to prevent single points of failure.