Q: Design an event-driven architecture for image processing (upload → resize → store).
S3 upload → S3 Event Notification → SQS queue → Lambda consumer reads from SQS → resizes image → stores to output S3 bucket → SNS notific...
#AWS #Cost & Architecture #L3 #Cloud #Infrastructure #S3
🎙️ Candidate Opening & Architectural Context
""AWS reliability requires differentiating between AWS control plane limits and host-level resource exhaustion. When addressing this question, I walk the interviewer through our production incident runbook: isolating the blast radius, checking diagnostic logs and metrics, and applying a safe fix.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Production Solution & Architecture
S3 upload → S3 Event Notification → SQS queue → Lambda consumer reads from SQS → resizes image → stores to output S3 bucket → SNS notification to user.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: S3 upload → S3 Event Notification → SQS queue → Lambda consumer reads from SQS → resizes image → stores to output S3 bucket → SNS ."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: S3 upload → S3 Event Notification → SQS queue → Lambda consumer reads from SQS → resizes image
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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