Demo - S3 Object Lambda
summary
S3 Object Lambda wraps an S3 access point and runs a real Lambda on GET requests to transform objects: a 2 MB CSV (31,415 lines) demo either returns unchanged for admin, does a mask in place byte-for-byte redact for a legacy client and adds a redaction-type header, or filters and removes columns producing 3,515 records for a finance role. Transformation streams from S3 via a presigned URL, uses normal Lambda pricing plus request and data fees, and supports the Lambda free tier.
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chapters (13)
- 0:00Introduction to s3 object lambda
- 1:22Setting up access points
- 2:13Configuring lambda functions
- 3:30Demo: Admin access
- 4:58Demo: Legacy system redaction
- 6:31Demo: Row-level filtering
- 7:59Demo: Custom access denial
- 8:43Under the hood
- 10:13Code implementation analysis
- 11:26Use cases and observability
- 13:04Streaming and performance
- 15:26Security and public buckets
- 17:05Pricing and wrapping up
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