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News
SQLDungeon: Now with DuckDB
16+ hour, 36+ min ago (35+ words) SQL Dungeon grew a DuckDB marsh this weekend. Why, well because I wanted to learn it. SQL Dungeon started as a browser dungeon crawler where every room is a SQL puzzle …...
I Replaced Chroma, Qdrant, and Pinecone With a SQLite File
1+ day, 8+ hour ago (165+ words) I needed a vector DB that didn’t require a daemon. SQLite was already there. Every RAG tutorial starts the same way. Step one: install …...
I Replaced SQLite's C Driver with 800 Lines of Pure Python Stdlib: What the Docs Don't Tell You About Raw B-Trees, 9-Byte Varints, and 48-Bit Integers
3+ day, 17+ hour ago (1380+ words) The rules were brutal: Zero third-party runtime dependencies. No pip. No C-extensions. No... Tagged with python, sql....
PostgreSQL MVCC: Why Bloat Doesn't Automatically Mean Expensive Reads
3+ day, 18+ hour ago (1407+ words) One of the most persistent misconceptions about PostgreSQL MVCC is that old row versions accumulate... Tagged with postgres, sql, database, mvcc....
SQLite 3.53's self-healing index only repairs the rows you write to
4+ day, 2+ hour ago (894+ words) I asked a database for the row where a computed bucket equalled 500. It gave me row 309. The correct row, using the same formula, was 308. No error, no warning, just a wrong answer served from an index that no longer matched…...
I Built a Crash-Safe Key-Value Store Without sqlite3 — Then I Killed It
1+ week, 3+ day ago (1600+ words) I built Anvil, a crash-safe, embedded, log-structured key-value store for Hackathon Raptors' Zero Dependency Hackathon 2026 — Track D: Data & Storage. The constraint was simple: But I didn't want to solve that by wrapping sqlite3 and calling it a storage engine. So I…...
Decade-old PostgreSQL flaw turns backup account into a backdoor
1+ week, 4+ day ago (520+ words) A critical vulnerability in PostgreSQL had remained hidden for more than a decade, potentially turning a routine backup account into a path to full database and server compromise. The issue, dubbed PostGREShell by Cyera Research, exists in the database’s replication…...
A hidden Bitcoin node database just shrank by 40 GB, but only if runners rebuild it
2+ week, 4+ day ago (578+ words) The change is merged to master, but operators must rebuild the optional index to capture the space saving and plan for another rebuild after a downgrade. Bitcoin Core has merged a redesign of its optional transaction index that cut about…...
How to Make SQLite Grind Millions of Vectors on a $5 VPS with 2GB RAM (and Not Die from Out-of-Memory)
3+ week, 4+ day ago (391+ words) Imagine you have a cheap virtual machine with 2 GB of RAM, absolutely no Swap space, and an ambitious goal: to run a distributed AI search engine capable of processing and vectorizing thousands of incoming documents (the "Harvest" pipeline). Most developers,…...
The Free Server Wiped My SQLite Queue Overnight and the Health Check Never Noticed
3+ week, 4+ day ago (736+ words) The background job worker looked perfect when I deployed it. A free model available through MonkeyCode generated the code, my tests passed, and the health endpoint returned 200 every time I poked it. Disclosure: This article was prepared as part of…...