Three Numbers Your On-Call Shift Depends On

Password "spring2024" < 1 second RTX 4090, 8-char lowercase
99.9% SLA 8.76 hrs/year Downtime budget at three nines
Postgres Connections ~20, not 200 8 vCPU, optimal pool

Password Crack Time Estimator

8-char lowercase = 26^8, cracked in <1 second on an RTX 4090. 12-char mixed = 95^12, cracked in millennia. Entropy math doesn't bluff —run the numbers yourself.

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System Availability SLA Calculator

Three nines = 8.76 hours downtime/year. Five nines = 5.26 minutes. Each additional nine roughly doubles your ops burden. Negotiate SLOs with arithmetic, not instinct.

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DB Connection Pool Sizing

Connections = (core_count × 2) + effective_spindle_count. 8 vCPU Postgres with SSD = ~20 connections optimal. Not 200. Don't hand your database a thundering herd.

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