60 stories tagged with #database, in publish-time order across the WeSearch catalog. Tag pages update as new stories ingest.
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Show HN: Wtdb – give every Git worktree its own database
Copy databases and update environment variables when spawning new git worktrees. - willhackett/wtdb…
ICE denies having a protester database. But a letter to Congress sheds more light
In a previously unpublicized letter to Congress, the newly-departed head of ICE said the agency collects data on people suspected of potentially unlawful activity, which could incl…
Microsoft allows BYOL for Amazon RDS. Repeat, Microsoft allows BYOL for Amazon RDS
SQL Server licenses can now be consumed in the rival cloud's DBaaS…
Rebuilding Postgres Metrics on Self-Hosted VictoriaMetrics with Zero Downtime
How we rebuilt Xata's PostgreSQL branch metrics on a self-hosted VictoriaMetrics stack in six weeks, with zero user-visible downtime.…
PostgreSQL Connection Pooling Explained: How It Works and Why It Matters
Opening a new database connection for every query is one of the most expensive things your backend...…
I Replaced My AI Agent's Flat Fact Store with a Graph Database
Show HN: Self tuning chat exposing it's semantic and agentic cache
Open-source RAG chatbot over Valkey, Redis OSS, Dragonfly, and BetterDB docs. Live demo of @betterdb/agent-cache and @betterdb/semantic-cache with real-time hit/miss metrics.…
Writing a Custom SQL Database Engine in C++17: Implementing MVCC, WAL, and a Bitmask DP Join Optimizer with Zero External Dependencies
Fuzzy Text Search in PostgreSQL: How Trigrams Make Computers "Almost Right"
A deep dive into one of the most clever tricks in database engineering - explained so simply, your...…
I Built a Self-Contained Bookmarks Page from Environment Variables — No Database Needed
Learn how to build a self-contained bookmarks page using environment variables, eliminating the need for databases and avoiding broken links when moving servers. Discover solutions…
Rewald
Portable real-time SQL database. One binary, SQL over a WebSocket, predicated subscriptions evaluated server-side. - Akira-AA83/rewald…
PostgreSQL 20000 Error: Causes and Solutions Complete Guide
PostgreSQL Error 20000: case_not_found — What It Means and How to Fix It PostgreSQL error...…
Oracle ORA-00215 Error: Causes and Solutions Complete Guide
ORA-00215: Must Be at Least One Control File — Causes, Fixes & Prevention ORA-00215 is...…
Product Tree Denormalization in Side Projects: Is It Really Necessary?
When working on my side projects or in a production ERP, the structure called a "product tree" always...…
RelGT-AC: A Relational Graph Transformer for Autocomplete Tasks in Relational Databases
Relational databases underpin modern enterprise, scientific, and healthcare systems, yet predictive machine learning on such data remains challenging due to their multi-table, hete…
Anybody having experience with the Huawei databases?
Getting Started with Vector Databases Using Amazon Aurora PostgreSQL + pgvector
Hello! I'm Satoshi Kaneyasu, DevOps engineer at Serverworks. In this article, I'll introduce the...…
PostgreSQL CLI Setup
Built an app for World Cup 2026 Stickers Collection tracking with automated database comparison
Great Stack to Doesn't Work Bonus: SQL vs NoSQL: Which One in 2026?
The honest decision framework, not another flame war. The SQL vs NoSQL debate has been running...…
I created a fork of GunDB and rewrote it in TypeScript using Vibe Code
Inspired by a similar project called GenosDB and Cloudflare’s initiative to rebuild Next.js, I...…
Portabase v1.16 – open-source database backup & restore tool, now with REST API
AI to core database
From ASP.NET + MSSQL to PHP + MySQL: Migrating a Names Site Without Mangling the Accents
My baby-name site started life on ASP.NET with a MSSQL backend. It worked. The reason I rewrote the...…
[show off] i built an ai-powered wheel fitment database using a hybrid search index. learned a lot about spatial data management for micro-saas.
ELI5 : What is the difference between Class Diagram and ERD (Database Design: Relational Model)
YouTube Backend: How Database & Data Management Actually Work
If you've ever wondered what happens the moment you hit "upload" on a YouTube video, you're asking...…
Showcasing my horror jumpscare database, feedback welcome!
UUID v4 vs UUID v7 — Lequel choisir pour PostgreSQL en 2026 ?
Si vous utilisez PostgreSQL, vous avez probablement déjà dû choisir entre une clé primaire BIGSERIAL...…
Great Stack to Doesn't Work Bonus: 10 PostgreSQL Features You Didn't Know Existed
Between episodes, here's something lighter. Still useful. Still PostgreSQL. You've used...…
BSON and OSON: documents are designed to be nested, not flat
I like vendors benchmarks as they are often good illustrations of worst practice. Rather than...…
Benchmarking time-series databases for ecommerce infrastructure monitoring
Time-series database performance under ecommerce load: real benchmark results Your...…
Working on a Simple Redis-Inspired Database in C
The year is 2026. AIs are literally inventing new math, yet journalists are still posting obviously false stuff like this. How can a database solve math problems no human has ever been able to solve?
PostgreSQL 08003 오류 원인과 해결 방법 완벽 가이드
08003 connection does not exist 는? PostgreSQL 에러 코드 08003은 클라이언트가 이미 존재하지 않는 데이터베이스 연결을 통해...…
Oracle ORA-00057 오류 원인과 해결 방법 완벽 가이드
ORA-00057 maximum number of temporary table locks exceeded 는? ORA-00057 에러는 Oracle...…
Account Arrears
Finally, I decided to organize the school system's files and diagnose issues across its VPS...…
Day 19 - Relational Database Service
Latest applications rely heavily on databases. Whether you're building: E-commerce...…
SQL Pattern Series #1: The Presence Pattern
Thinking in terms of existence instead of lists SQL Pattern Series #1 of 21 A collection of...…
SQL for Developers: The Practical Guide (2026)
SQL for Developers: The Practical Guide (2026) You don't need to be a DBA to write good...…
DuckDB 1.5.3 Iceberg updates, PostgreSQL TDE extension & AI index tuning
DuckDB 1.5.3 Iceberg updates, PostgreSQL TDE extension & AI index tuning ...…
UUID v4 vs UUID v7: Which One Should You Use in Modern Applications?
UUIDs are everywhere now. Databases, APIs, distributed systems, event streams, authentication...…
Part 08: Designing Tables, Data Types and Constraints
Part of the "SQL: Zero to Ninja" series, for junior web devs who want SQL to finally click. Up to...…
Lakebase engineering team talks database resiliency and cloud failures
In t…
Database Index Selection: Why Basic Approaches Fall Short?
Introduction: The Unseen Costs of Indexes When we talk about database performance, indexes...…
UUIDs in Practice — When Auto-Increment Falls Short
Most of us learned databases with auto-increment IDs. id INT AUTO_INCREMENT is in every tutorial. It...…
One Practical SQL Trigger Example You Can Actually Use
One UPDATE statement. One trigger. One automatic audit record — no extra code required. Triggers are...…
1.4 Planner: Which Path to Take
By the time 1.3 ends, the rewriter has let the Query tree through. Views have been expanded, RLS...…
What are important data systems problems, ignored by research? (2024)
A blog by and for database architects.…
MongoDB `$facet` Explained: One Query, Multiple Results
Sometimes one MongoDB aggregation needs to return more than one result. For example, from the same...…
Key Joins (SQL Proposal)
A-Z Database Glossary
A comprehensive reference of database terms from A to Z written for beginners and anyone learning how...…
PostgreSQL 02000 Error: Causes and Solutions Complete Guide
PostgreSQL Error 02000: No Data PostgreSQL SQLSTATE 02000 ("no data") occurs when a query...…
Oracle ORA-00036 Error: Causes and Solutions Complete Guide
ORA-00036: Maximum Number of Recursive SQL Levels Exceeded ORA-00036 occurs when Oracle's...…
Show HN: Open-source toolkit for AI memory that scales
Hierarchical versioned storage on PostgreSQL ltree. Scoped retrieval, built-in versioning, zero runtime deps. - 0xJaksun/lithium-core…
Sled – An Embedded Database in Rust
the champagne of beta embedded databases. Contribute to spacejam/sled development by creating an account on GitHub.…
RSQL – High-Performance, Open Source PostgreSQL Client (Tauri v2, React, Rust)
A Tauri application for efficient and secure database management. - rust-dd/rsql…
HeidiSQL – Lightweight MariaDB, MySQL, SQL Server, PostgreSQL and SQLite Manager
A lightweight client for managing MariaDB, MySQL, SQL Server, PostgreSQL, SQLite, Interbase and Firebird, written in Delphi and Lazarus/FreePascal - HeidiSQL/HeidiSQL…
SQL Injection Protection in Flask: A Practical Guide. Part 5 of e2ee chat series
The Problem Most developers think their database is safe. It's not. SQL injection attacks...…
Why Postgres Lacks Transparent Data Encryption
Oracle, SQL Server, and MySQL all ship Transparent Data Encryption. Postgres doesn't... yet the mailing list threads go back to 2016. Here's the full history: five implementations,…