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PostgreSQL Double Buffering: Why OS RAM and Buffer Cache Compete and How the 25% Rule Helps

Learn how PostgreSQL double buffering wastes RAM, increases latency, and hurts query performance — plus the 25% shared_buffers rule to fix it.

Insighttechnologyprogrammingdatabase optimizationhackernoon.com·Tech by Flipboard·1mo ago·9 min read

PostgreSQL work_mem Configuration Pitfalls: How Low Memory Settings Can Cause Catastrophic Outages

My friend Henrietta Dombrovskaya pinged me on Telegram. Her production cluster had just been killed by the OOM killer after eating 2 TB of RAM. work_mem was set to 2 MB. Something didn’t add up. Hetty, like me, likes playing with monster hardware. 2 TB of

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mydbanotebook.org4mo ago

Performance Implications of UUID Version 4 as Primary Keys in PostgreSQL

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andyatkinson.com7mo ago

PostgreSQL VACUUM Limitations: Why Indexes Become Bloated and How to Fix Them

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boringsql.com7mo ago

PostgreSQL Locks: Deadlocks, Object-Level Locks, and Predicate Locks

We've already discussed some object-level locks (specifically, relation-level locks), as well as row-level locks with their connection to object-level locks and...

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habr.com·Hacker News: Front Page·7mo ago·20 min read

PostgreSQL Data Modeling: Comparing Lookup Tables vs Enum Types for Limited Value Columns

This article explores three data models for strings with few distinct values: a simple string, a lookup table or an enum type.

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cybertec-postgresql.com·Hacker News: Front Page·7mo ago·8 min read

Analyzing PostgreSQL Database Workloads: Read-Heavy vs Write-Heavy Patterns and Optimization Strategies

A query to find out if Postgres is read heavy or write heavy and tips for optimizing Postgres for both read and write workloads.

technologyprogrammingdatabase optimizationcrunchydata.com·Hacker News: Front Page·9mo ago·10 min read

PostgreSQL 18 Introduces Pipelining Support in psql Client