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Posts on building, using, and learning about databases.

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"The write was acknowledged" means less than you think

"The write was acknowledged" means less than you think

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3 min read
I take down a healthy primary on purpose. You should too.

I take down a healthy primary on purpose. You should too.

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3 min read
Stop Killing Your Database with @Transactional in Spring Boot

Stop Killing Your Database with @Transactional in Spring Boot

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2 min read
Don't pick a partial index for speed: what I measured on a 10M-row Postgres queue table

Don't pick a partial index for speed: what I measured on a 10M-row Postgres queue table

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9 min read
Postgres Can Do Typo-Tolerant Search. You Don't Need Elasticsearch Yet.

Postgres Can Do Typo-Tolerant Search. You Don't Need Elasticsearch Yet.

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3 min read
Apache Data Lakehouse Weekly: August 19 to 26, 2026

Apache Data Lakehouse Weekly: August 19 to 26, 2026

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25 min read
Day 1 of Data Science!

Day 1 of Data Science!

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1 min read
Why a 99% Cache Hit Rate Is 10x Faster Than 90% (Not 9%)

Why a 99% Cache Hit Rate Is 10x Faster Than 90% (Not 9%)

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4 min read
PostgreSQL psql: Schema Navigation Quick Reference

PostgreSQL psql: Schema Navigation Quick Reference

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1 min read
Opinion: Your Tests Can't See What a Migration Destroys — Dry-Run It on a Clone

Opinion: Your Tests Can't See What a Migration Destroys — Dry-Run It on a Clone

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4 min read
Bringing Relational SQL Databases to the P2P World

Bringing Relational SQL Databases to the P2P World

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3 min read
How We Architected an Enterprise-Grade PostgreSQL Database on Supabase with a 99.99% Cache Hit Ratio

How We Architected an Enterprise-Grade PostgreSQL Database on Supabase with a 99.99% Cache Hit Ratio

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5 min read
Data Substrate Versus Vector Db Rag

Data Substrate Versus Vector Db Rag

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3 min read
A snapshot-style ops dashboard with nothing but the Python standard library

A snapshot-style ops dashboard with nothing but the Python standard library

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5 min read
A SQL interview is a translation test, not a syntax test

A SQL interview is a translation test, not a syntax test

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6 min read
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