Development and hobby writing by Kıvanç Ertürk.https://kivancerturk.com/enhttps://kivancerturk.com/blog/ef-core-tuzaklari/https://kivancerturk.com/blog/ef-core-tuzaklari/EF Core code that's fast in development and slow in production: N+1 queries, needless tracking, Include explosions and other common mistakes.Thu, 17 Sep 2026 09:18:00 GMTdevelopmentcsharpdotnetef-coreperformancehttps://kivancerturk.com/blog/async-await-tuzaklari/https://kivancerturk.com/blog/async-await-tuzaklari/Async code that compiles and passes tests, then deadlocks, swallows errors or starves the thread pool in production. Common mistakes and their fixes.Thu, 17 Sep 2026 07:26:00 GMTdevelopmentcsharpdotnetasyncaspnet-corehttps://kivancerturk.com/blog/claude-code-token-tasarrufu/https://kivancerturk.com/blog/claude-code-token-tasarrufu/Tokens usually go where we don't look: long sessions, huge outputs, a bloated CLAUDE.md, unused plugins. What to watch for.Wed, 16 Sep 2026 08:05:00 GMTdevelopmentclaude-codetokenscontextproductivityhttps://kivancerturk.com/blog/plan-subagent-review/https://kivancerturk.com/blog/plan-subagent-review/Having Claude build a feature piece by piece: a spec, a plan, a fresh subagent per task, an independent review. What it caught and what it missed.Tue, 15 Sep 2026 13:21:00 GMTdevelopmentclaude-codesubagentscode-reviewastrohttps://kivancerturk.com/blog/claude-code-skill-yazmak/https://kivancerturk.com/blog/claude-code-skill-yazmak/Turning the procedures you keep re-explaining into skills: when to use a skill versus CLAUDE.md, and how to write a description that triggers.Tue, 15 Sep 2026 13:00:00 GMTdevelopmentclaude-codeproductivityskillshttps://kivancerturk.com/blog/windows-hosting-otomatik-deploy/https://kivancerturk.com/blog/windows-hosting-otomatik-deploy/Push-to-deploy on shared Plesk/IIS hosting with no SSH or Git: FTPS sync, web.config settings and the six traps that caught me.Tue, 15 Sep 2026 10:00:00 GMTdevelopmentgithub-actionsiisdeployastrodotnethttps://kivancerturk.com/blog/claude-code-10-hafta/https://kivancerturk.com/blog/claude-code-10-hafta/I had Claude analyse 348 of my sessions. What I was doing right, where I was overpaying, and the seven habits I changed afterwards.Tue, 15 Sep 2026 07:00:00 GMTdevelopmentclaude-codeproductivityengineering-managementhttps://kivancerturk.com/blog/zone-savunmasi/https://kivancerturk.com/blog/zone-savunmasi/Guarding space instead of players: the 3-3-1 zone (cup, wings, deep), how the cup moves with the disc, and the two weapons against it, swing and popper.Sun, 13 Sep 2026 13:00:00 GMThobbyultimate-frisbeetacticssporthttps://kivancerturk.com/blog/force-ve-mark/https://kivancerturk.com/blog/force-ve-mark/Pushing the thrower to one side (the force), the player who does it (the mark), and how the other six line up. Open side, break side, break throw.Sun, 13 Sep 2026 12:45:00 GMThobbyultimate-frisbeetacticssporthttps://kivancerturk.com/blog/horizontal-stack/https://kivancerturk.com/blog/horizontal-stack/Three handlers back, four cutters side by side. The logic of the horizontal stack, under and deep cuts, swing and continuation, with animated diagrams.Sun, 13 Sep 2026 12:30:00 GMThobbyultimate-frisbeetacticssporthttps://kivancerturk.com/blog/ultimate-frisbee-nedir/https://kivancerturk.com/blog/ultimate-frisbee-nedir/A 7-on-7 team sport with a 175 g disc and no referees: a short history, the field, the core rules, and how it is played, with animated diagrams.Sun, 13 Sep 2026 12:00:00 GMThobbyultimate-frisbeesporthttps://kivancerturk.com/blog/building-this-site-with-claude-code/https://kivancerturk.com/blog/building-this-site-with-claude-code/How a landing page went from a hosting-panel screenshot to production in one session: spec, plan, subagents, review, deploy.Sun, 13 Sep 2026 00:00:00 GMTdevelopmentclaude-codeastropleskgithub-actionshttps://kivancerturk.com/blog/what-this-blog-is-for/https://kivancerturk.com/blog/what-this-blog-is-for/Two shelves: things I build, and things I do when I am not building.Sat, 12 Sep 2026 00:00:00 GMThobbymetahttps://kivancerturk.com/blog/notes-on-writing-in-two-languages/https://kivancerturk.com/blog/notes-on-writing-in-two-languages/Why some posts here show up in English and Turkish, and why some only show up in one.Fri, 11 Sep 2026 00:00:00 GMThobbymetawriting