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Sunday, 1 November 2026 Reading Room

Tech

A cached sudo timestamp is a policy decision with a lifetime

A cached sudo timestamp is a policy decision with a lifetime Sudo authentication is often treated as a one-time event followed by a short period of convenience. The timestamp cache is more accurately a policy object. It decides whether a later invocation can inherit proof of an earlier authentication, which terminal or process it belongs to, and how long that proof survives. The sudoers manual…

dev.to ·

We haven't written up this one. Dev.to has the full story — the link below goes straight to it.

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Leaving Gravy: Add Up What Percentage-of-Recovery Pricing Quietly Took

Nobody leaves a recovery tool because of a single invoice. They leave on the afternoon they finally add up a year of invoices and set that total beside the revenue the tool claims to have saved.

  • Percentage-of-recovery pricing appears affordable initially but grows with business success.
  • Only action-led recoveries (emails, retries, updates) can be attributed to the tool.
  • Switching tools requires accounting for time, effort, and comparing total costs.

·dev.to

Churn Management Starts Before Anyone Cancels

Open most churn dashboards and you are reading a register of the already gone. The line goes up, someone asks why, and the team scrolls through exit surveys in which former customers politely explain…

  • Billing issues often precede churn, not post-cancellation data.
  • Predictive signals from failed payments and card expirations are reliable.
  • Early-warning checklist should monitor first failures, card expirations, and soft declines.

·dev.to

How to Write Numbers in Words on a CV and Job Application

A CV is read in seconds, and small number mistakes stand out. Writing numbers in words, in the right places, makes a CV look careful and professional.

  • Numbers used for measurements, dates, statistics
  • Years of experience spelled out, smaller counts in words
  • Numerals for larger or exact figures, financial amounts

·dev.to

GGUF VRAM calculator: the three numbers that decide

Cross-posted from Mr Say Nothing — receipts live there. "Will this quant fit?" is a three-number question, not a feeling: weights + KV cache + overhead .

  • GGUF VRAM calculator identifies three critical numbers: weights, KV cache, and overhead
  • Weights calculated by parameters, quant bits-per-weight, and 1.08 factor
  • KV cache often underestimated but grows with context size, crucial for Llama-3 8B

·dev.to

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