Knowledge from the field/ engineering_logs

Deep notes and articles on software engineering

Backend architecture, Django and Python, relational databases and the everyday craft of delivering enterprise software.

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Backend performance, taken apart

Why simple patterns stop being enough at very high scale

The articles here are not only about clean code; they are about what happens at the level of the system — database lock contention, the cost of opening TCP connections, and how a service behaves under real load.

  • 0.4msaverage response time after the tuning
  • 99.99%events delivered through the heaviest peaks

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