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Vinicius Fagundes

Data Architect building scalable cloud-native platforms AWS Snowflake Python. Transform fragmented data into AI-ready pipelines; integrate LLMs; optimize cost & performance. https://x.com/dfagundesv

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Reranking and Two-Stage Retrieval: Precision When It Matters Most

Reranking and Two-Stage Retrieval: Precision When It Matters Most

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2 min read

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Dense vs Sparse Retrieval: Mastering FAISS, BM25, and Hybrid Search

Dense vs Sparse Retrieval: Mastering FAISS, BM25, and Hybrid Search

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15 min read
Chunking Strategies: The Art of Slicing Documents for Optimal RAG Performance

Chunking Strategies: The Art of Slicing Documents for Optimal RAG Performance

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10 min read
Retrieval-Augmented Generation: Connecting LLMs to Your Data

Retrieval-Augmented Generation: Connecting LLMs to Your Data

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10 min read
Prompt Engineering Patterns: From Zero-Shot to Chain-of-Thought Reasoning

Prompt Engineering Patterns: From Zero-Shot to Chain-of-Thought Reasoning

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14 min read
Function Calling and Tool Use: Turning LLMs into Action-Taking Agents

Function Calling and Tool Use: Turning LLMs into Action-Taking Agents

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18 min read
Positional Encodings and Context Window Engineering: Why Token Order Matters

Positional Encodings and Context Window Engineering: Why Token Order Matters

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12 min read
Embeddings and Vector Similarity: How Machines Understand Meaning

Embeddings and Vector Similarity: How Machines Understand Meaning

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19 min read
Transformers and Attention: How LLMs Actually Process Text

Transformers and Attention: How LLMs Actually Process Text

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18 min read
Temperature, Tokens, and Context Windows: The Three Pillars of LLM Control

Temperature, Tokens, and Context Windows: The Three Pillars of LLM Control

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13 min read
Building Custom MCP Servers with Python: A Data Engineer's Guide 🛠️

Building Custom MCP Servers with Python: A Data Engineer's Guide 🛠️

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5 min read
🏗️ Vector Database Architecture: How to Structure Your Data for Production RAG Systems

🏗️ Vector Database Architecture: How to Structure Your Data for Production RAG Systems

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3 min read
🎓 Building a Smart LMS Assistant: RAG System with Pinecone for Multi-Source Learning Data

🎓 Building a Smart LMS Assistant: RAG System with Pinecone for Multi-Source Learning Data

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3 min read
When to Choose Scala Over Python for Apache Spark: A Performance-Driven Analysis

When to Choose Scala Over Python for Apache Spark: A Performance-Driven Analysis

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4 min read
🎯 The Challenge: Processing TBs of S3 Data Without Breaking the Bank

🎯 The Challenge: Processing TBs of S3 Data Without Breaking the Bank

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5 min read
🚀 Building a Sandbox Data Warehouse with Snowflake + GitHub Actions (Part 2)

🚀 Building a Sandbox Data Warehouse with Snowflake + GitHub Actions (Part 2)

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3 min read
🏗️ Building a Sandbox Data Warehouse with Snowflake + GitHub Actions (Part 1)

🏗️ Building a Sandbox Data Warehouse with Snowflake + GitHub Actions (Part 1)

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2 min read
Managing Reference and Configuration Data in E-Commerce Data Platforms

Managing Reference and Configuration Data in E-Commerce Data Platforms

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3 min read
🧊 Snowflake RBAC 101 – Episode 3: Ongoing Access Management

🧊 Snowflake RBAC 101 – Episode 3: Ongoing Access Management

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1 min read
Snowflake RBAC 101 – Episode 2: Role Hierarchies & Least Privilege

Snowflake RBAC 101 – Episode 2: Role Hierarchies & Least Privilege

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1 min read
Snowflake RBAC 101

Snowflake RBAC 101

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1 min read
🏗️ Designing Your Modern Data Platform (Cloud-Native Edition)

🏗️ Designing Your Modern Data Platform (Cloud-Native Edition)

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2 min read
🔐 Data Governance: From Chaos to Control

🔐 Data Governance: From Chaos to Control

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2 min read
🚦 Optimize Database Access and Efficiency with AWS RDS Proxy

🚦 Optimize Database Access and Efficiency with AWS RDS Proxy

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2 min read
🧭 Data Mesh vs Data Fabric (Part 2) – Real World Architectures & Code

🧭 Data Mesh vs Data Fabric (Part 2) – Real World Architectures & Code

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1 min read
🧭 Data Mesh vs Data Fabric (Part 1) – Rethinking How We Scale Data

🧭 Data Mesh vs Data Fabric (Part 1) – Rethinking How We Scale Data

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2 min read
🧱 OLTP vs OLAP: When Transaction Meets Analytics

🧱 OLTP vs OLAP: When Transaction Meets Analytics

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2 min read
🛒 Real-Life Data Lakehouse Use Case: Revolutionizing Retail Analytics

🛒 Real-Life Data Lakehouse Use Case: Revolutionizing Retail Analytics

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2 min read
🏗️ Data Lakehouse: Bridging Flexibility and Structure

🏗️ Data Lakehouse: Bridging Flexibility and Structure

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2 min read
🧱 Data Lake, Data Warehouse, and Data Mart: What's the Difference?

🧱 Data Lake, Data Warehouse, and Data Mart: What's the Difference?

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2 min read
🤖 Part 3: Building a Price Recommendation Engine with Pandas and Scikit-Learn

🤖 Part 3: Building a Price Recommendation Engine with Pandas and Scikit-Learn

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2 min read
❄️ Part 2: ETL to Snowflake with AWS Glue — Enabling Price Index Modeling

❄️ Part 2: ETL to Snowflake with AWS Glue — Enabling Price Index Modeling

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2 min read
🧠 Building a Serverless Price Indexer with AWS — From Web Crawling to Insights

🧠 Building a Serverless Price Indexer with AWS — From Web Crawling to Insights

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2 min read
Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 3

Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 3

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3 min read
Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 2

Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 2

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3 min read
Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 1 - Foundation and Data Modeling

Building Multi-Tenant Analytics with Snowflake RBAC and Sigma Computing: Part 1 - Foundation and Data Modeling

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3 min read
Trust Over Throttle: Leveraging o3-Pro for Accurate, Impactful AI

Trust Over Throttle: Leveraging o3-Pro for Accurate, Impactful AI

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3 min read
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