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Articles 132,806Blog Posts 137,401Tech Tutorials 34,408Research Papers 25,938News 18,825
⚡ AI Lessons
Dev.to · Vinicius Fagundes
1d ago
46%. 13%. 61%. Same Data, Three Headlines.
All three numbers are true. All three describe the same trend. And whichever one you saw first...
Dev.to · Vinicius Fagundes
2d ago
The Model Didn't Change. A Parameter Disappeared. Thousands of Pipelines Broke.
An LLM vendor dropped two sampling parameters this month. Every hard-coded call that passed them...
Dev.to · Vinicius Fagundes
3d ago
Your AI Bill Is a Routing Problem, Not a Model Problem
The price spread right now: open-weight models around $0.14 per million input tokens. Frontier...
Dev.to · Vinicius Fagundes
4d ago
Cloud Bills Took a Decade to Get FinOps. AI Bills Won't Get That Long.
Watch what happened this month. Databricks moved Genie to pay-as-you-go. Every user gets a small...
Dev.to · Vinicius Fagundes
1w ago
12 Patterns Run Every Data Stack. Seniority Is Knowing When Each One Is a Mistake.
Suggested tags: dataengineering, architecture, bigdata, dataops You've seen the chart — twelve...
Dev.to · Vinicius Fagundes
📣 Digital Marketing & Growth
⚡ AI Lesson
2w ago
You saved $80K self-hosting Spark. It cost you $400K.
Then he walked me through the team. Two senior engineers, 30% of their time, on Spark cluster...
Dev.to · Vinicius Fagundes
3w ago
Your warehouse isn't expensive. Your full table scans are.
Every few months someone shows me a cloud bill that tripled and asks whether they should switch...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3w ago
Your p-value answered a question you didn't ask.
You ran the A/B test. It came back p = 0.08. "Not significant." So you killed the feature and moved...
Dev.to · Vinicius Fagundes
📋 Product Management
⚡ AI Lesson
1mo ago
Brute force isn't grit. It's the bill for a plan you skipped.
Brute force isn't grit. It's the bill for a plan you skipped. We've turned grinding into a...
Dev.to · Vinicius Fagundes
📣 Digital Marketing & Growth
⚡ AI Lesson
1mo ago
Aws Glue or Airflow? You're probably paying for both to do one job
Glue or Airflow? You're probably paying for both to do one job. It's the wrong question, and the...
Dev.to · Vinicius Fagundes
📐 ML Fundamentals
⚡ AI Lesson
1mo ago
Your model isn't underfitting. Your features are lazy.
Here's the scene I've watched play out on a dozen teams. Accuracy plateaus. Someone rips out the...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
SQL or Python? The line is sharper than you think (with code)
Most engineers reach for Python first. Wrong instinct. I've spent 17 years inside other people's...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Building Your First Data Warehouse in Databricks — End to End 🎉
Building Your First Data Warehouse in Databricks — End to End 🎉 This is it. The article...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Medallion Architecture: Designing Bronze, Silver, and Gold Layers
Medallion Architecture: Designing Bronze, Silver, and Gold Layers Before you write a...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Delta Lakes: ACID Transactions, Time Travel & Delta Tables
Delta Lake for Dummies: ACID Transactions, Time Travel & Delta Tables If there's one...
Dev.to · Vinicius Fagundes
3mo ago
Databricks File System (DBFS) + Connecting to Cloud Storage
Databricks File System (DBFS) + Connecting to Cloud Storage You've got a cluster running...
Dev.to · Vinicius Fagundes
3mo ago
Setting Up Your Databricks Account (Free Trial + First Look at the UI)
Enough theory. Let's get you inside Databricks. In this article we'll create your free account, take...
Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4mo ago
How Databricks Fits in the Modern Data Stack
How Databricks Fits in the Modern Data Stack Before you write a single line of code in...
Dev.to · Vinicius Fagundes
5mo ago
Building Your First Pipeline: From Concept to Execution
Introduction We've covered the theory. We've discussed the tools. We've explored the...
Dev.to · Vinicius Fagundes
🔄 Data Engineering
5mo ago
Tools of the Trade: What Powers Modern Data Engineering
Introduction You understand what data engineering is. You know how pipelines, ETL, and...
Dev.to · Vinicius Fagundes
🧠 Large Language Models
5mo ago
Anomaly Detection + LLM: Statistical Rigor Meets AI Insights
TL;DR: Z-score with seasonality detects sales anomalies at 90% accuracy. Add Claude to explain them....
Dev.to · Vinicius Fagundes
🔄 Data Engineering
6mo ago
Pipelines, ETL, and Warehouses: The DNA of Data Engineering
Introduction In the previous article, we explored what data engineering is and why it...
Dev.to · Vinicius Fagundes
🔄 Data Engineering
6mo ago
Data Engineering Uncovered: What It Is and Why It Matters
The first chapter in a beginner-friendly series on becoming a data engineer. Learn what data engineering is, why organizations need it, and whether this career
Dev.to · Vinicius Fagundes
🏗️ Systems Design & Architecture
6mo ago
Real-Time is an SLA, Not an Architecture: When You Actually Need Kafka (And When You Don't)
TL;DR: Inherited a streaming architecture with 47 Kafka topics. Only 3 needed sub-second latency. 38...
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