Piero Bozzolo, Varese

Building things on the cloud, mostly serverless.

Same clouds, different altitude. Infrastructure engineer on AWS and Terraform, student pilot, and this site is the logbook.

Latest from the cockpit

All flights
Lesson 3: Straight and Level Flight

Lesson 3: Straight and Level Flight

Attitude plus power equals performance. Two configurations at 2000 ft, 100 kt and 80 kt, and the exact order of the five moves that take you from one to the other.

Date
20 Sept 2026
Aircraft
Cessna 172M
Field
LILN
Duration
0.7 h Dual

Things that move when you touch them

All experiments

Shipped to the App Store

All apps

The Async Pipeline

All parts

A serial write-up of Lumcast's backend, one architectural decision per part.

  1. The Architecture of Not Waiting

    How Lumcast eliminates Lambda cold starts from the user-facing path by pushing every expensive operation into an async pipeline, and why that one decision shapes everything else.

  2. The Trigger Chain: From DynamoDB Row to Running Pipeline

    How a single DynamoDB write cascades through Streams, EventBridge Pipe, SQS, and a consumer Lambda to start a Step Functions execution, and the subtle data normalization problem hiding inside.

  3. Orchestrating AI: Step Functions as a Generation Pipeline

    Why Step Functions STANDARD workflows are the right orchestrator for a multi-stage AI pipeline, how Map states handle parallel synthesis, and how to treat error handling as a first-class state.

  4. From Script to Audio: Chunking, SSML, and Parallel Synthesis

    How Lumcast turns a raw LLM script into a multi-chapter MP3: the 2900-character chunk problem, SSML voice matrices, parallel Polly synthesis, and lossless ffmpeg concatenation.

Materiale di studio PPL

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36 guide interattive

Widget, simulatori e quiz che ho costruito mentre studiavo per l'esame teorico. Bilingui, tutti giocabili nel browser.

Aerodinamica
14
Performance
6
Conoscenza del Velivolo
2
Navigazione
10
Diritto Aeronautico
4