@C0nstanta

Konstantin

@C0nstantaJoined January 2026

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Senior Software Engineer working on backend systems, data pipelines, and demand forecasting.

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Konstantin's blogs

C0nstanta Engineeringc0nstanta.hashnode.dev2 posts

Crash-safe JSON at scale: atomic writes + recovery without a DB

How we hardened file-based JSON storage in a Flask app - atomic writes (fsync+os.replace), rolling .bak, and forensic-safe recovery reads.

15 min readc0nstanta.hashnode.dev

Jan 5

Near real-time Server Logs in a Flask Dashboard

Originally published on DEV.to:https://dev.to/constanta/real-time-server-logs-in-a-flask-dashboard-21ad I built an inventory system for warehouse operators. Non-technical people. When something breaks, the conversation goes like this: "It's not work...

6 min readc0nstanta.hashnode.dev

Jan 1

Konstantin

About

Available for

Konstantin's blogs

Crash-safe JSON at scale: atomic writes + recovery without a DB

Near real-time Server Logs in a Flask Dashboard

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Konstantin

About

Available for

Konstantin's blogs

Crash-safe JSON at scale: atomic writes + recovery without a DB

Near real-time Server Logs in a Flask Dashboard