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News
I Replaced Chroma, Qdrant, and Pinecone With a SQLite File
7+ hour, 33+ min 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
2+ day, 16+ 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
2+ day, 17+ 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
3+ day, 1+ 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…...
From Detection to Production: A PII-Safe Pipeline in Python and DuckDB
6+ day, 4+ hour ago (237+ words) Part 3 of 3 — assembling everything into a runnable pipeline: raw zone, pseudonymized curated zone, vault, role-based serving, GDPR erasure, and the CI test that catches leaks. Tagged with dataengineering, duckdb, dataprivacy, security....
I Built a Crash-Safe Key-Value Store Without sqlite3 — Then I Killed It
1+ week, 2+ 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, 3+ 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, 3+ 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…...
DuckDB and the changing physics of analytics
2+ week, 3+ day ago (200+ words) August 26, 2026 • 3554 words In this post, Andy Warfield explains how databases like DuckDB are enabling a new way to build with data, why they matter right now, and how they complement the work we’ve been doing in S3 (e.g., S3 Files, S3 Tables,…...
PR#1: Make SurrealDB performance slightly better
3+ week, 22+ hour ago (240+ words) At the first step, I picked up the SurrealDB project for contribution. I didn't know how I could help this project become better. So I asked my beautiful OpenCode to find parts of the project that could be better. It…...