✨ Add python web performances notes

content/pyconfr-2023-python-web-performance.md

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+Title: Python web performance 101
+Date: 2023-02-19 12:05
+Summary: Python web performance 101: uncovering the root causes
+Category: Bloc-notes
+Tags: live-notes, pyconfr, talk, bordeaux, python, dev
+Status: published
+
+Par **[Alex Ptakhin][author]** − Salle [Rosalind Franklin][rfranklin]
+
+
+### [Python web performance 101][abstract]
+
+[![logo PyConFr Bordeaux 2023][pyconimg]][pyconfr]
+
+> Web engineers meet issues with performance with fast-growing or even maintaining existing products. It’s always unexpected and we have limited time for decisions. With our hero, we meet real-faced RAM, CPU and IO problems and learn troubleshooting approaches to monolithic and distributed systems.
+>
+> We try different existing tools from Python and the cloud ecosystem including, but not limited to: cProfile, yappi, memory-profiler and tracing.
+>
+> This talk will be more focused on backend parts and designed for intermediate-level web engineers, but all skill levels are welcome.
+
+_[Support][support]_
+
+---
+
+Notes personnelles
+==================
+
+* …
+* Temporary solution: update hardware to get time for debug
+* tools
+    - `time.?perf`
+    - `cProfile` / [`snakeziz`](https://jiffyclub.github.io/snakeviz/)
+    - /!\ mesurement change system behavior
+    - `py-spy`
+    - `yappi` for `asyncio`
+    - `sys.getsizeof`
+    - `tracemalloc`
+    - `memory-profiler`: require code changes
+    - `memray`: looks promising
+    - Tracing: OpenTelemetry
+* Things to remember
+    1. getting time by adding ressources worth it
+    1. Monitor application errors
+    1. Measuring something can change the behaviour of the system
+    1. Tuning is good, and remember, pure Python is not about the performance
+
+
+[abstract]: https://www.pycon.fr/2023/fr/talks/30m.html#python-web-performance-101-unc
+[author]: https://github.com/aptakhin/
+[pyconfr]: https://www.pycon.fr/2023/
+[pyconimg]: {static}/img/200-pycon-fr-23.png
+[rfranklin]: https://fr.wikipedia.org/wiki/Rosalind_Franklin
+[support]: https://github.com/aptakhin/talks/tree/main/2023-Python-Web-Performance-101