https://sudonull.com/postgresql-transactions-locks-isolation-levels-mvcc-vacuum
Deep dive into PostgreSQL transaction and locking mechanisms. Analysis of isolation levels (Read Committed, Repeatable Read, Serializable), MVCC, VACUUM, and methods for solving concurrency issues.
https://sudonull.com/postgresql-query-optimization-and-understanding-index-operations
Figure out why PostgreSQL ignores indexes. Detailed analysis of EXPLAIN ANALYZE, selectivity, correlation, and advanced index types to improve database performance.
https://sudonull.com/health-score-for-postgresql-health-monitoring
Learn how Health Score combines 150 PostgreSQL metrics into one indicator. Formulas, SQL queries, category weights and auto-diagnostics for DBA. Implement in your infrastructure.
https://sudonull.com/pg-expecto-prompt-vs-gentleman-postgresql-analysis
Comparison of detailed PG_EXPECTO prompt and universal GENTLEMAN v10.2 for PostgreSQL load reports. Test results on DeepSeek, key metrics SPEED and iowait. Learn why detail wins. For DBA.
https://sudonull.com/postgresql-tuning-ai-vs-load-tests
Comparison of AI Recommendations and Real PostgreSQL Benchmarks. Learn how OLTP and OLAP configs affect performance and why tests are more important than theory.
How to take a scrolling screenshot on Windows 11 (full screen ...
https://techcommunity.microsoft.com/discussions/windows11/how-to-take-a-scrolling-screenshot-on-windows-11-full-screen/4152593
May 26, 2024 · Taking screenshot of long webpages can be a real pain, especially when you need to capture a lot of content, and the …
Windows 11 PrintScreen Key Opens Snipping Tool How to Revert?
https://techcommunity.microsoft.com/discussions/windows11/windows-11-printscreen-key-opens-snipping-tool-how-to-revert/4512027
Apr 16, 2026 · Hitting PrtScn in Windows 11 now launches Snipping Tool instead of copying to clipboard. I want the old Win10 …
Windows snipping tool highlight straight - Super User
https://superuser.com/questions/1193439/windows-snipping-tool-highlight-straight
Mar 29, 2017 · In the Windows Snipping Tool, I would like to know how I can use the highlighter tool to draw straight lines?
Screen shot drop down menu with snipping tool - Super User
https://superuser.com/questions/1308368/screen-shot-drop-down-menu-with-snipping-tool
Nov 5, 2025 · Using the Windows snipping tool, it is not possible (or is it?) to get a screenshot of a drop down menu. As soon as you …
Snipping tool not covering both screens! | Microsoft Community Hub
https://techcommunity.microsoft.com/discussions/windows11/snipping-tool-not-covering-both-screens/3584617
Jul 28, 2022 · If you use snipping tool (Win+Shift+S) while secondary display is connected to a laptop the snipping area does not …
How to easily trim audio files on Windows 11 PC? | Microsoft …
https://techcommunity.microsoft.com/discussions/windows11/how-to-easily-trim-audio-files-on-windows-11-pc/4178242
Jun 28, 2024 · Hello all, I'm looking for some help on how to trim long audio files into shorter ones on my Windows 11 PC. I …
Unable to install Snipping Tool on Windows 11 - Super User
https://superuser.com/questions/1784405/unable-to-install-snipping-tool-on-windows-11
May 16, 2023 · A while ago, I had problems with Windows 11 Snip & Sketch / Snipping Tool. I could start a screenshot with WIN …
How to create screenshot using Windows snipping tool with cut out ...
https://superuser.com/questions/1143906/how-to-create-screenshot-using-windows-snipping-tool-with-cut-out-border
Nov 9, 2016 · The tool SnagIt provides the features discussed here, with or without shadows, etc. It is much easier than using the …
Snipping Tool | Microsoft Community Hub
https://techcommunity.microsoft.com/discussions/windows11/snipping-tool/4470031
Nov 14, 2025 · I've been using Snipping Tool since Windows 10 came out and it had been working very well with Windows 11 since I …
Better Alternatives to Snipping Tool for Windows 11? | Microsoft ...
https://techcommunity.microsoft.com/discussions/windows11/better-alternatives-to-snipping-tool-for-windows-11/4154721
May 29, 2024 · The better Alternatives to Snipping Tool for Windows 11. Screen Clipping in PowerPoint is a quick way to take a …
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SpaceX and KDDI launched satellite communication for smartphones in Japan. Learn how Starlink Direct-to-Cell works, who can access it, and what hidden geopolitical goals this project pursues.
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Google introduced Gemini Ultra 2.0 with a context of up to 10 million tokens, surpassing GPT-5. Learn about the breakthrough architecture, price of $0.0005, and impact on the AI market. Read the full analysis.