What is structured logging with ILogger?
PICTURE THIS: DATABASE INDEX
Simple meaning
I log message templates with named placeholders so sinks index fields.
WHY — Logging instead of guessing?
Why interviewers care about Logging:
who only read docs from people who shipped.
and tied to .NET work.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1I log message templates
with named placeholders so sinks index fields.
- 2Avoid string interpolation that
hides structure.
- 3Levels keep noise down
in production.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
I log message templates with named placeholders so sinks index fields. Avoid string interpolation that hides structure.