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News
SQL Is Surviving, Franklin: When One Query Isn't Enough
2+ hour, 50+ min ago (1774+ words) Franklin survived SQL JOINs. Last time, we made tables talk to each other. We connected students to classes, classes to teachers, and somehow convinced Franklin that duplicate rows were not a database malfunction. He was beginning to feel confident. "Which…...
Turning Mermaid ER diagrams into shareable 3D schema tours
3+ hour, 53+ min ago (20+ words) Mermaid erDiagram is great for... Tagged with mermaid, sql, database, opensource....
Apache Spark frente a Apache Hadoop: arquitectura, rendimiento y casos de uso
6+ hour, 42+ min ago (1205+ words) Presentación Mi nombre es Kimberly Charlo Delgado Taylor y actualmente curso un Máster en Data Science. Mi experiencia …...
NO idea where to start learning SQL?
12+ hour, 7+ min ago (246+ words) This article is a beginner friendly guide that gets you started into learning SQL as a programming... Tagged with programming, productivity, beginners, webdev....
Two Transactions, One Row: What Does MySQL Actually Let You See?
16+ hour, 47+ min ago (554+ words) Two users, One database row, Both reading and writing at almost exactly the same time. Who sees... Tagged with database, mysql, softwareengineering, backend....
Agentic RAG 2026: When the AI Decides How It Searches
19+ hour, 50+ min ago (274+ words) Production systems standardly use LangGraph as the orchestration framework for this, supplemented by LlamaIndex for the retrieval layer. LangGraph's checkpointing makes every step of the agentic loop traceable, pausable (for human approvals), and repeatable – an essential property for compliance and…...
AI Agent Memory: Sliding Windows, Summaries, and Vector Storage
1+ day, 3+ hour ago (623+ words) The agent we built in Post #4 has one big problem — the moment the script ends, it forgets everything. Next time you run it, it starts from zero. No memory of past conversations, no retained facts, nothing. For a quick experiment…...
Distributed Locks
1+ day, 3+ hour ago (110+ words) One-liner: A distributed lock ensures that only one node in a cluster can perform a critical operation at a time — preventing race conditions across services. In a single-server world, a mutex or semaphore handles concurrency. But in distributed systems: Classic…...
Why Parameterized Queries Matter for SQL Security
1+ day, 4+ hour ago (559+ words) SQL injection is one of the classic examples of what can happen when an application mixes user input directly into a database query. The underlying problem is simple. The application expects data. The database may interpret part of that data…...
The SQL Queries That Lie to You With a Straight Face
1+ day, 1+ hour ago (191+ words) Seven queries that run without error, return a result, and are still wrong — and how to stop writing them. Some SQL mistakes throw an error …...