Update version non-atomic
Review this 'update if not changed' code.
What a strong answer looks like
Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.
0:00 of about 18 min
Mark a line and say what kind of problem it is.0 findings
1row = db.get(id)
2if row.version == expected_version:
3 row.data = new_data
4 row.version += 1
5 db.save(row)
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.