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April 8, 20265 sections
HTTP Status Codes Reference
The most commonly used HTTP status codes and what they mean. Searchable.
#http #reference

The notebook

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PostgreSQL in ProductionFrom connection pooling to restore testing: the practice of keeping one cluster healthy in production, one part at a time.Read the series →

sade.dev

sade.dev is a notebook of systems that actually run in production. I write about backend and systems engineering — PostgreSQL, Redis, Laravel, Nginx, queues and infrastructure — recording real decisions along with the constraints that forced them and the traps they hide. The aim is not another walkthrough but a reference an engineer can return to when the same decision lands on their desk. Beside the writing sits a small set of developer tools that run entirely in the browser.

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Muhammet Şafak

I write about backend and systems engineering. Writing code since 2008, in production for 15+ years.

© 2026 Muhammet Şafak. All writing belongs to the author.

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