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Cloud & infrastructure · #aws
What are the recommended practices for validating backup and restore processes in AWS environments, and how can they be integrated into a Well‑Architected review?
How can I apply the AWS Well-Architected Framework’s performance‑efficiency pillar to systematically measure, diagnose, and remediate performance issues in an Amazon EC2‑based application? I am looking for a step‑by‑step explanation that covers baseline establishment, metric selection (such as CPU utilization, network throughput, and latency), data collectio
An example service can retrieve a known object key but cannot enumerate the same bucket. The role policy was written specifically for object reads, and the application recently added a directory-style browser. Does successful GetObject access imply that the list request should also work?
A failure needs to be narrowed down before settings are changed or operations retried. Which evidence best separates application errors from environment and dependency problems?
An upgrade needs a compatibility check, a tested release and a recovery path. Which changes deserve particular attention before the new version reaches production?
A performance change should improve the measured workload without sacrificing correctness or wasting capacity. Which measurements and bottlenecks should be considered first?
A fictional application reads most objects under an allowed prefix. A newer object returns AccessDenied. The newer object uses a different customer-managed KMS key. The bucket policy appears unchanged. Which evidence would distinguish S3 access from encryption-key access?
The same intended role can read an object from an approved diagnostic session, while a service running through an S3 VPC endpoint receives 403. The team has checked the role and bucket policy but has not reviewed the endpoint policy. How should the differing request paths be compared?
Goal Determine how AWS Lambda behaves when a function’s reserved concurrency setting exceeds the account‑level concurrency limit. Constraints Default account limit is 1,000 concurrent executions (can be increased via support). Maximum reserved concurrency per function is 1,000. Reserved concurrency is persistent across deployments and does not trigger automa