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Calibre

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r/DataHoarder · u/Similar_Option_7408 · May 29, 2026

I somehow managed to import 1.8m books to calibre

Started with around 2.4m, with all duplicates removed, ended up at 1.8m, It took forever, 3-4 weeks It is around 3TB of book files, and calibre db is 2.5GB It uses around 10Gb of memory: 5120e1c7ca37 calibre 4.10% 9.898G…

Hacker News · u/dfskGT · Jun 6, 2026

Show HN: An iOS bubble level designed to calibrate away camera bump

Hi HN,I built a simple, single-purpose iOS utility: a bubble level that lets you calibrate out the physical angle offset caused by iPhone camera bumps and cases. It automatically switch between 3 modes when you try to us…

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Hacker News · u/haoranchg · May 21, 2026

Show HN: Agent-estimate, how long a coding task takes, at agent speed

I have used Codex & Claude Code for coding for a while, but how long a coding task will actually take? When I ask Claude Code to estimate, the result is often from training data, which is based on human speed. That’s why…

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Hacker News · u/fabioconcina · 3w ago

Show HN: Claumon – forecasting Claude Code usage limits with a Gamma process

Anthropic's usage analytics dashboard is only available to Team and Enterprise org admins. On a Pro or Max plan all you get is /usage and the claude.ai usage page, which show where you stand right now but not where you'r…

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r/selfhosted · u/MysteriousPizza8390 · May 28, 2026

I benchmarked 6 self-hosted book server apps up to 150K books (ingestion time + RAM/CPU)

I’ve been trying to find the best self-hosted app for managing my large library (~150K books). After seeing a lot of recommendations across Reddit, I decided to run the same repeatable load test across Grimmory, Kavita, …