Free Prometheus Alert Rule and SLO Generator

Tools for Prometheus monitoring: SLO-based PromQL generator, error budget calculator, and scaling to avoid OOMs.

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Observability

Articles tagged with "Observability"

Put a Number on It: The ROI Calculator for Observability Architecture

December 5, 2025 Cardinality Cloud 3 min read

The Observability Vendor Subscription Model

The site is down. Customers are complaining. Your on-call engineer is in hour three of spelunking through dashboards that look like a Jackson Pollock painting. You’re paying six+ figures annually for an observability platform, and the most useful alert so far has been “Something is wrong. Probably.”

The Four Golden Signals: What to Monitor

November 19, 2025 Cardinality Cloud 4 min read

The observability vendors charge by the byte. They want you to send everything. The industry tells you to measure everything. So you instrument everything, send it all to your vendor, and wait for clarity.

Instead, you get an Observability bill that’s higher than your AWS or GCP compute costs. And you still can’t answer basic questions: Is my application healthy? Are customers experiencing problems right now? Should I be paging someone?

Even with a top-tier vendor and unlimited budget, more data doesn’t equal more clarity. You’re drowning in metrics, dashboards, and alerts — but you still don’t know what actually matters.