Database Migrations & Seeders: Stop Writing Manual SQL Scripts
If you've ever said "I forgot to run the ALTER TABLE on production" — this post is for you. Manual database changes are one of the most common causes …
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Долгие миграции на старте сервиса — это не startup-проблема. Это ошибка в архитектуре релиза
Когда сервис поднимается по 8-15 минут, команда почти всегда начинает крутить одни и те же ручки: увеличивает initialDelaySeconds, добавляет startupPr…
What Is Agent Memory? A Beginner’s Guide for AI Developers
TL;DR: Agent memory is stored state an AI agent can retrieve across sessions to maintain continuity. A bigger context window does not fix the problem.…
SQL Basics: Talking to a Database for the First Time
Every company you will ever work for stores its data in a database. Not CSV files. Not Excel sheets. A database. Tables of users. Tables of transactio…
Turning Manual Ops Into a 10-Minute Task
I once turned a 2-week manual data update process into a 10-minute automated pipeline by writing a PHP script that ingested a vendor spreadsheet, norm…
Adding Semantic Search to Your Postgres App with pgvector
pgvector is a Postgres extension that adds vector storage and similarity search to an existing database, so you can run semantic queries directly agai…
Vector Databases for RAG: Pinecone vs. Weaviate vs. Milvus vs. PGVector 0.8 (PostgreSQL 18)
In 2024, 72% of RAG pipelines fail production due to vector database misconfiguration, costing teams an average of $42k in wasted compute and rework. …
Ruby on Rails Has Scalability Issues. Here's How We Solved Them
Every few months someone declares Rails dead. Then Shopify reports another record Black Friday. In 2025, Shopify's Rails monolith handled 489 million …
The Database Bottleneck You Never Saw Coming: Why 50ms Will Make or Break Your AI Agent in 2026
The uncomfortable truth about AI infrastructure that nobody is talking about — and why your stack might be optimizing for the wrong metric In February…
Migrating From a JSON Column to a Proper Schema in Postgres
Book: Database Playbook: Choosing the Right Store for Every System You Build My project: Hermes IDE | GitHub — an IDE for developers who ship with Cla…
Build an AI teammate to help with your Postgres
Think about those times on team calls when a simple question like “Can someone check the latest sales numbers?” puts the meeting to a pause while some…
Deadlock-Free by Construction: How Typhon Eliminates Deadlocks Instead of Detecting Them
💡Typhon is an embedded, persistent, ACID database engine written in .NET that speaks the native language of game servers and real-time simulations: en…
Unified Memory Core for AI Agents
A practical guide to building episodic, lexical, vector, and graph memory workflows in Oracle AI Database Companion notebook: Unified Agent Memory wit…
Notion Database Limits & Workarounds — 7 Walls Every Power User Hits
Notion Database Limits & Workarounds — 7 Walls Every Power User Hits Why Notion Databases Break Down for Personal Use Notion is famous as "the too…
MongoDB Associate Developer Certification: A Complete Preparation Guide
This article was written in collaboration with @v_laxmi_sahithi , @asksamyukthaa , @likitha_konyala and @chanda_rajkumar . In today’s data driven worl…
MongoDB Overview and Preparation Guide
In today’s data driven world, data is at the core of almost every application. But managing large volumes of data efficiently is a crucial skill for d…
Time-Series, Document, or Relational? The 5-Question Test Every New Project Needs
Book: Database Playbook My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com |…
Choosing Postgres, MongoDB, or DynamoDB: The 4 Questions That Actually Decide It
Book: Database Playbook My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com |…
Postgres With pgvector vs Pinecone: 1 Million Embeddings, One Honest Comparison
Book: Database Playbook: Choosing the Right Store for Every System You Build Also by me: RAG Pocket Guide: Retrieval, Chunking, and Reranking Patterns…
5 RAG Failure Modes Nobody Warns You About in the Tutorials
Book: RAG Pocket Guide: Retrieval, Chunking, and Reranking Patterns for Production Also by me: Database Playbook: Choosing the Right Store for Every S…
Why PostgreSQL EXPLAIN ANALYZE Can Mislead You — and What to Use Instead
EXPLAIN ANALYZE is the standard tool for understanding how PostgreSQL runs a query. It shows the chosen plan, estimated and actual row counts, and exe…
Anti-Join in MongoDB
SQL databases implement anti-joins—finding rows with no match—through NOT EXISTS. Although anti-join is not a distinct relational algebra operator, it…
Day 66: Why Point-in-Time Recovery is the first button you should click in DynamoDB
Today on Day 66 of my Serverless Financial Agent build, things went south. While connecting a real banking API (Wise) to replace my sandbox data, my D…
N+1 Query Detection and Prevention in Laravel Production Apps
The N+1 query problem is the most common performance issue in Laravel applications, and it's the easiest to introduce accidentally. A developer adds $…
From RocksDB Pain to GraniteDB Gain: Building a Blockchain-First Storage Engine in Rust
Building Ferrous Network exposed the limits of general-purpose databases. Here's why I'm writing GraniteDB from scratch. Hey folks, Altug here — found…
SQL Server Running Slow? Here's What Actually Fixes It.
Every growing business hits this wall at some point. The application that worked perfectly six months ago now takes forever to load. Users start compl…
How to get near-perfect, deterministic accuracy from your AI agents
Author: Matthew Penaroza I have spent a lot of time working on large-scale agent architectures with some of the largest organizations in the world, an…
Escape the cloud
A local-first platform where users own their data cryptographically — built on encrypted SQLite, CRDTs, and libp2p. Here is the simplest thing you can…
Cursor Rules for MongoDB: The Complete Guide to AI-Assisted MongoDB Development
Cursor Rules for MongoDB: The Complete Guide to AI-Assisted MongoDB Development MongoDB is the database where "schemaless" gets sold as a feature for …
Reacting to Database Changes in Real-Time: How I Built a CDC Tool
I built youjustneedpostgres.com to argue that most teams could use Postgres for almost everything. For queues, for search, for documents. The recommen…