How to evaluate a RAG system: recall, faithfulness and the questions that matter
You cannot improve a RAG system you are not measuring, and "I asked it five questions and it seemed fine" is not measuring. Every serious change I m…
Team Management
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A Node.js SaaS App Field Guide to Lean KPI Telemetry and Hosted Dashboards
Short answer: For a Node.js SaaS app, start with a hosted metrics path only when the dashboard needs aggregate trends, bounded dimensions, and opera…
Typical SaaS Churn Rate: How Bootstrapped Founders Can Benchmark and Protect Their Runway
This article was originally published at https://saastools.corenk.com/articles/typical-saas-churn-rate You closed March at $13,780 MRR. Celebration…
AI credits are the new lines of code metric
GitHub added a tiny field to the Copilot usage metrics API this week that is going to create a lot of very confident spreadsheets. Enterprise and or…
Are You Actually Reducing SaaS Churn Rate, or Not? A Bootstrapped Founder’s Diagnostic
This article was originally published at https://saastools.corenk.com/articles/are-reduce-saas-churn-rate-or-not You closed the month at $14,730 MRR…
Does Churn Prevention Ignore Your SaaS Payments? The Overlooked Leak That Bleeds MRR Monthly
This article was originally published at https://saastools.corenk.com/articles/does-churn-prevention-saas-payments You logged into Stripe to check m…
The 60x Gap — Why AI Feels Faster but Actually Slows You Down
In late 2025, the CTO of a mid-sized SaaS company saw a report — after adopting AI coding tools, his engineering team "felt 20% faster." He cut 30%…