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Posts on building, using, and learning about databases.

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When A Landing Page Almost Took Down Production

When A Landing Page Almost Took Down Production

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4 min read
NestJS - Maintaining transactional integrity across services

NestJS - Maintaining transactional integrity across services

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4 min read
When Sequelize Syncs, Your Database Listens

When Sequelize Syncs, Your Database Listens

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3 min read
Database Indexing Made Easy: SQL vs MongoDB

Database Indexing Made Easy: SQL vs MongoDB

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2 min read
Joins and Windows Functions in SQL

Joins and Windows Functions in SQL

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5 min read
Internal Datatypes and Record Format in SQLite

Internal Datatypes and Record Format in SQLite

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4 min read
Spring Boot 4 入門教學 - Part 6 (JDBC 資料庫連接)

Spring Boot 4 入門教學 - Part 6 (JDBC 資料庫連接)

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6 min read
Counting Billions of Unique Items with the Magic of HyperLogLog

Counting Billions of Unique Items with the Magic of HyperLogLog

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8 min read
PostgreSQL XID Wraparound: What It Is and How to Prevent It

PostgreSQL XID Wraparound: What It Is and How to Prevent It

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4 min read
PostgreSQL JSONB GIN Indexes: Why Your Queries Are Slow (And How to Fix Them)

PostgreSQL JSONB GIN Indexes: Why Your Queries Are Slow (And How to Fix Them)

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5 min read
AI Wrote It. Your Database Paid for It: How get_object() in DRF Actions Quietly Kills Backend Performance

AI Wrote It. Your Database Paid for It: How get_object() in DRF Actions Quietly Kills Backend Performance

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4 min read
OpenAI Is Running PostgreSQL at Millions of QPS (Here’s How It Didn’t Explode)

OpenAI Is Running PostgreSQL at Millions of QPS (Here’s How It Didn’t Explode)

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3 min read
Diesel vs SQLx (Rust ORMs)

Diesel vs SQLx (Rust ORMs)

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9 min read
Databases with Scrapy: The Beginner's Guide

Databases with Scrapy: The Beginner's Guide

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10 min read
MongoDB didn't start because of File permission issue

MongoDB didn't start because of File permission issue

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2 min read
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