In the past year, I’ve gone through a very tough interview for Amazon AWS. In this article, I’ve described my experience.

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This article is based on a REAL use case scenario for a database-intensive application, with a focus on performance. The experimental results I’ve come across can help you choose one or the other.

  1. Application and test description — what are we measuring and how
  2. Results and conclusion


  1. /find-all — Gets an increasing number of items from the DB
  2. /save — Persists a new item on the DB
  3. /get/{id} — Get an item from the DB
  4. /cpu/{load} —…

Give the context of a WEB application fault

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They found the hanging body on a sunny Monday afternoon. The screen was still displaying the last assigned task regarding a bug fix — misty, convoluted sentences without significance.

  1. What HAR these — a definition about HAR files and how them can help us fixing and reporting a bug;
  2. Generate a secure HAR file — using your…

After some experience in the field I have found several aspects that have made me turn up my nose — and I have found some maneuvers to straighten it back.


Who does not want to power up his YAML files?

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Streams? Parallel Streams? Reactive Flux? Regular expressions? There are lots of different ways. Let’s see what is the best solution.

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The process is done in 4 simple steps.

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1- Convert your QR code into the actual text

The first step of the decoding.

A simple step-by-step guide to use Kubernetes ConfigMap to update the environment of a frontend application at runtime, without any additional libraries.

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1 - Prerequisites: ConfigMap

Every one of us has at least one old semi-broken old phone in the drawer. In this article, I’ve described how I transformed this old piece of tech. junk into a fully functional security camera accessible from the internet.

My old Asus Zenphone with broken display. It has a very good camera :)
  • 1 Android phone with functioning WIFI connection, camera, and display
  • 1 Configurable Internet Router (or, to get things very spicy, you could install a private VPN server)


Gaetano Piazzolla

Tech. leader and passionate developer.

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