2 videos Ā· 2 events Ā· 2023ā2025 Ā· 1h 4m of video
0:31:28
DjangoCon Europe 2025 Ā· June 4, 2025
Aivars KalvÄns presents practical techniques for debugging Linux and production applications without direct production access or a traditional debugger. He shows how `/proc` exposes process environments and open file descriptors, including deleted-but-still-open logs, and explains how `strace` reveals system calls, blocking operations, socket activity, andā¦
0:33:10
Django Day Copenhagen 2023 Ā· October 8, 2023
Django code that checks an account balance and then updates it is unsafe under concurrency: separate reads and writes can cause time-of-check/time-of-use errors and lost updates. Aivars Kalvans explains pessimistic locking with `select_for_update`, optimistic version checks, and the databaseās implicit locks, including deadlock risks andā¦