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Oliver Seifert

As seen in: Frontiers, MDPI, Augsburger Allgemeine, DEV Community, nordbayern.de, Neue Westfälische, Aargauer Zeitung, Luzerner Zeitung, Tagblatt, Allgemeine Zeitung and
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Articles

Quizlet is gatekeeping more and more, so i made an extension

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By Oliver Seifert
| DEV Community
Originally published on oseifert.ch TL;DR: Quizlet locked the learn mode and Knowt's import extension keeps missing cards. So i built quick-cards, a Chrome extension that grabs your Quizlet set and exports it to whatever you want (txt, csv, json, pdf, printable flashcards, Anki decks, or directly to Knowt). Chrome only for now, install instructions at quickcards.oseifert.ch/install. Quizlet If you are a student and ever wanted to have digital flashcards you surely heard of Quizlet.
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pgit: I Imported the Linux Kernel into PostgreSQL

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By Oliver Seifert
| oseifert.ch
TL;DR: Imported the full Linux kernel history into pgit. 1,428,882 commits, 24.4 million file versions, 20 years of development, stored in PostgreSQL with delta compression. Actual data: 2.7 GB (git gc --aggressive gets 1.95 GB). The import took 2 hours on a dedicated server. Then I started asking questions. 7 f-bombs in 1.4 million commit messages (all from 2 people). 665 bug fixes pointing at a single commit. A filesystem that took 13 years to merge.
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pgit: What If Your Git History Was a SQL Database?

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By Oliver Seifert
| oseifert.ch
TL;DR: Built a Git-like CLI backed by PostgreSQL with automatic delta compression. Import any git repo, query its entire history with SQL. Benchmarked on 20 real repositories (273,703 commits): pgit outcompresses git gc --aggressive on 12 out of 20 repositories, while giving you full SQL access to every commit, file version, and change pattern. Then I gave an AI agent a single prompt and it produced a full codebase health report on Neon's own repo in under 10 minutes. What is pgit?
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