Lambda cold-start harness
Measurement
2026
A repeatable deploy of the same handler shape across Node.js, Python and provided.al2023, reading initDuration from the platform report.
Welcome to The Cloud Engineer!
My name's Florian and I write short stories about AWS things and side projects I am working on.
Always curious to learn something new and sharing my knowledge with the world.
Thoughts, experiments and code snippets — one post at a time.
Also, check out my side projects I work on besides my 9-5 job!
Built on AWS
S3 event fan-out
Architecture
2026
Routing object events to several consumers with EventBridge and SQS, so there is no router Lambda in the middle.
Bedrock prompt caching
Experiment
2026
Time-to-first-token with and without cache checkpoints on a long system prompt, with the chart from the run.
Writing
Measuring time-to-first-token with and without cache checkpoints on a long system prompt.
Using EventBridge rules and SQS to route S3 notifications to several consumers, with the Terraform to match.
A repeatable harness for comparing init duration on Node.js, Python and a provided.al2023 Rust function.