Blog
Guides, walkthroughs and AWS how-tos for asking your cloud questions in plain English.
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Reduce AWS SDK v3 Bundle Size and Cold Starts in Lambda
Measured esbuild results for an AWS SDK v3 Lambda handler: what shrinks the bundle, the ESM require fix and how to track Init Duration.
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Assume an IAM Role With AWS SDK v3 (STS AssumeRole)
Explicit STS AssumeRole flows in AWS SDK v3: pass the credentials to clients, refresh before expiry, loop over accounts and fix AccessDenied errors.
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Find Unused Lambda Provisioned Concurrency
A TypeScript script that finds idle Lambda provisioned concurrency, sizes oversized aliases from peak utilization and deletes idle configs on request.
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Find Idle Amazon FSx File Systems
A TypeScript script that lists Amazon FSx file systems with no client reads or writes, their newest backup and what each one costs a…
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Find Idle Amazon MSK Clusters
A TypeScript script that finds Amazon MSK clusters with no producer or consumer traffic and shows what each one costs a month.
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Find Idle Kinesis Data Streams
A report-only AWS SDK v3 script that finds Kinesis streams with no traffic in CloudWatch and prices the fixed charges each one still carries.
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Find Unused ECR Repositories
An AWS SDK v3 script that ranks ECR repositories by last push, last pull and stored size, and deletes the abandoned ones only on…
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Find and Delete Unused ACM Certificates
An AWS SDK v3 script that finds ACM certificates nothing uses, sorts them into delete and review, and deletes only the safe ones on…
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Find Publicly Shared SSM Documents
An AWS SDK v3 script that finds SSM documents you share publicly, checks their versions for secrets without printing them, and stops the sharing.
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Find Load Balancers Without Access Logs (ALB, NLB, Classic)
An AWS SDK v3 script that reports which load balancers have no S3 access logs, and enables them on request with the right bucket…
