databases

Observability & Monitoring · 36 min read · 2026-06-16

Waiting Sessions Tell Me More Than CPU During Database Contention

A production-engineering deep dive into waiting sessions tell me more than cpu during database contention, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

Observability & Monitoring · 34 min read · 2025-06-04

Redis Eviction Means Policy Is Already Affecting Data

A production-engineering deep dive into redis eviction means policy is already affecting data, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 34 min read · 2025-02-19

One PostgreSQL Deadlock Is Worth Recording

A production-engineering deep dive into one postgresql deadlock is worth recording, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 34 min read · 2025-02-01

Redis Fragmentation Can Look Like a Memory Leak

A production-engineering deep dive into redis fragmentation can look like a memory leak, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 34 min read · 2024-10-16

PostgreSQL Connection Utilization Needs a Denominator

A production-engineering deep dive into postgresql connection utilization needs a denominator, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 1 min read · 2024-05-03

Database Container Metrics Need Engine Metrics Beside Them

High database container CPU or memory can be an important symptom, but it cannot identify whether the engine is busy with useful work, blocked transactions or internal maintenance.

databases Docker CPU memory

Observability & Monitoring · 36 min read · 2023-04-01

Buffer Hits, Disk Reads and the Shape of PostgreSQL Cache Pressure

A production-engineering deep dive into buffer hits, disk reads and the shape of postgresql cache pressure, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 35 min read · 2022-02-27

A Successful TCP Connection Does Not Mean the Database Is Healthy

A production-engineering deep dive into a successful tcp connection does not mean the database is healthy, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 34 min read · 2022-01-21

Temporary I/O Is a Query-Behavior Signal

A production-engineering deep dive into temporary i/o is a query-behavior signal, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 37 min read · 2021-07-03

Four Database Engines on One Small Server: Observability Without Exporter Sprawl

A production-engineering deep dive into four database engines on one small server: observability without exporter sprawl, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability

Observability & Monitoring · 34 min read · 2021-06-18

MySQL Slow Queries Belong in Infrastructure Monitoring

A production-engineering deep dive into mysql slow queries belong in infrastructure monitoring, grounded in the 2014 Mac mini hserver observability stack and its accepted runtime evidence.

databases PostgreSQL redis observability