Apache Kafka Part 1: What Stream Processing Is and Why It Changes Everything
Kafka is not a typical message broker — it’s the distributed nervous system powering Netflix, LinkedIn, and Uber. It handles millions of events per second without losing a single one, with guaranteed ordering per partition. This first installment explains the core concepts (topics, partitions, offsets, consumer groups) using a real use case: the 50 ARPA Piedmont stations from the Smart City project at Politecnico di Torino.
Supabase: the Open-Source Backend for Your Vibe-Coded Apps
Lovable and Bolt build the frontend in minutes. But where does user data live? How does login work? Who can see what? Supabase answers all of these questions: managed PostgreSQL, ready-to-use authentication, file storage, and Row Level Security — all free up to a generous limit, all integrable in a single click from the main vibe coding tools.
Sentiment Analysis & Topic Modeling: What Your Customers Really Mean
You have 200 reviews, 500 support tickets, 1,000 social media comments. Reading them all would take days — and you’d still miss the most important patterns. Sentiment Analysis and Topic Modeling solve exactly this: in ten minutes you get the emotional tone of every text, recurring themes grouped automatically, and a strategic summary that manual reading would never have produced.
Multimodal AI: Analyze PDFs, Images and Documents with Claude, GPT-4 and Gemini
AI no longer reads only text. Claude summarizes a 10-page quote in 30 seconds. GPT-4 Vision transcribes data from a dashboard screenshot into a ready-to-use table. Gemini 1.5 Pro navigates 1,000-page documents citing the sources. This guide shows how they work, when to use which tool, and where the time savings are measurable — with real screenshots from live sessions.
RAG: How to Build a Chatbot That Actually Knows Your Company
RAG (Retrieval-Augmented Generation) is the technique that transforms a generic LLM into an assistant that answers directly from your internal documents. This guide shows how the pipeline works — chunking, embedding, vector store, retrieval — and how to implement it today: without code using Claude Projects and Chatbase, or with a custom build using LangChain and LlamaIndex.
Grafana: Professional Dashboards for Technical and IoT Data
Grafana isn’t a replacement for Looker Studio — it’s a fundamentally different tool for a different problem. Where Looker Studio excels with business reports for stakeholders, Grafana is the visualization layer built for real-time technical data: IoT metrics, time series, infrastructure monitoring. It connects to InfluxDB, PostgreSQL, Elasticsearch, and dozens of other data sources. Free, open source, with native alerting built in.
Claude Code + Claude Design: From Idea to Shipped Code
On April 17, 2026, Anthropic launched Claude Design — the day after a major Claude Code update. Together, the two tools close a loop that previously required a designer, a developer, and at least three meetings: from idea to interactive prototype, from prototype to tested working code, all in a single conversation. This guide shows how both work, with real screenshots from live sessions.
Neo4j: When Relationships Are the Data, Not the Detail
Neo4j isn’t a replacement for SQL — it’s a fundamentally different tool. It excels where relationships between entities are the critical data: social networks, fraud detection, recommendation engines, enterprise knowledge graphs. This guide walks you through the property graph model, your first Cypher queries, and how to get started for free with AuraDB Free in under three minutes.
Google Sheets + AI: Your Spreadsheet as a Data Analyst
Your spreadsheet filled up automatically from Google Forms — now what? A hundred rows of raw data don’t speak on their own. This article teaches you the three moves that turn Google Sheets into a data analyst: conditional formulas (COUNTIF, SUMIF, AVERAGEIF), pivot tables, and dashboards. All free, all without writing a single line of code.
Google Forms: Complete Guide to Structured Data Collection
Google Forms is one of the most underrated tools in Google Workspace: free, works on any device, and sends every response straight to a spreadsheet in real time. This guide shows you how to design a form that collects clean, standardized data, stays GDPR-compliant, and connects automatically to Google Sheets — no code required.
