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ACAlexandre Calaçaclasses.alexandrecalaca.comFeb 20 · 6 min read

That total seems unusually high.

Introduction Warm up Have you ever experienced a situation where the price displayed was different from the price charged? How did you react, and why? Do you think customers should always question p

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ACAlexandre Calaçaclasses.alexandrecalaca.comFeb 20 · 6 min read

It seems to be affecting our largest customers first

Introduction Warm-up 1️⃣ Have you ever had a production issue where a query suddenly became very slow?What was the root cause, and how did you investigate it? 2️⃣ What would you do if a critical dashb

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ACAlexandre Calaçaclasses.alexandrecalaca.comFeb 10 · 5 min read

How Streamers and YouTubers Really Make Money

Introduction Warm up Speaking Text How Streamers and YouTubers Really Make Money At first glance, being a streamer or a YouTuber looks simple: turn on a camera, play a game, talk to people, and get famous. In reality, content creation is much closer...

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ACAlexandre Calaçaclasses.alexandrecalaca.comJan 21 · 5 min read

I evaluated production processes

Introduction Conversation Dialog In my previous role as an industrial engineer, I evaluated production processes and investigated recurring inefficiencies across multiple manufacturing lines. I identified critical bottlenecks and scheduled corrective...

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ACAlexandre Calaçaclasses.alexandrecalaca.comJan 15 · 5 min read

I feel that the word intelligent is misleading

Introduction Conversation Dialog Leo: Doug, the more I learn about AI, the more I feel that the word intelligent is misleading.It behaves intelligently, but I’m not convinced it actually knows anything. Doug: That’s a very precise observation.AI does...

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ACAlexandre Calaçablog.alexandrecalaca.comOct 4, 2025 · 4 min read

Introduction to React Props

Components Introduction In order to truly understand props in React, we first need to be clear on what components are. A component is a reusable piece of the user interface that encapsulates structure, styling, and behavior. Instead of repeating the ...

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ACAlexandre Calaçablog.alexandrecalaca.comSep 28, 2025 · 2 min read

From Github Codespaces to Repository: Step-by-Step Setup

Introduction Context By default, Codespace is using the GITHUB_TOKEN env var (the “Codespaces token”), which can’t create repos. It’s necessary to authenticate gh with a token/account that has the right scopes, or create the repo on the web first. Ob...

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ACAlexandre Calaçablog.alexandrecalaca.comSep 25, 2025 · 1 min read

How to create a Git commit without a message?

Solution Here it is: git commit --allow-empty-message -m "" Explanation To create a Git commit without a message, or with an empty message, you can use the --allow-empty-message flag with the git commit command. git commit --allow-empty-message -m "...

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ACAlexandre Calaçaclasses.alexandrecalaca.comSep 19, 2025 · 7 min read

I think we’ve got a serious race condition

Brian:I was checking the logs from last night, and I think we’ve got a serious race condition. Some of the payment statuses are being overwritten. Ingrid:Overwritten? As in, two processes updating the same row at the same time? Brian:Exactly. The job...

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ACAlexandre Calaçablog.alexandrecalaca.comSep 12, 2025 · 2 min read

Step-by-Step Guide to Forcefully Remove and Recreate Docker Containers

Steps Cleanup phase This phase’s goal is to removes existing containers, volumes, networks and images Stop and remove volumes docker compose down --volumes --remove-orphans The previous command stops and removes containers, networks, and default volu...

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Trending tags this week

That total seems unusually high.

It seems to be affecting our largest customers first

How Streamers and YouTubers Really Make Money

I evaluated production processes

I feel that the word intelligent is misleading

Introduction to React Props

From Github Codespaces to Repository: Step-by-Step Setup

How to create a Git commit without a message?

I think we’ve got a serious race condition

Step-by-Step Guide to Forcefully Remove and Recreate Docker Containers