#performance

2 articles tagged with #performance

Connection Pool Sizing, Measured: Why 48 Connections Beat 400

Raising the pool size is the reflex fix when a database feels slow, and past a certain point it makes things worse. I swept a PostgreSQL instance from 1 to 400 connections: throughput peaked at 48 and had lost 37% by 400, while latency multiplied by 13.

Serdarcan Büyükdereli

2026-08-21

Cache Eviction Algorithms: FIFO vs LRU vs LFU vs S3-FIFO Benchmark

#caching#algorithms

#performance#benchmark+1 more

Cache Eviction Algorithms: FIFO vs LRU vs LFU vs S3-FIFO Benchmark

I implemented FIFO, LRU, LFU and S3-FIFO from scratch and ran them over one million requests across three access patterns. LRU returned exactly zero hits on a cyclic scan. S3-FIFO led 8 of 12 tests, but not the ones you would guess. Code and raw output included.

Serdarcan Büyükdereli

2026-08-12

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