Monitoring & Reporting Tools Flashcards

Which Python library provides the `@app.route` decorator pattern AND built-in request logging when used with a WSGI server?

Answer: Flask

Flask uses `@app.route` for routing and automatically logs requests through Werkzeug's built-in logger.

What is the correct way to load a logging configuration from a `.ini`-style file in Python?

Answer: logging.config.fileConfig('logging.ini')

`logging.config.fileConfig()` reads a ConfigParser-format file to configure loggers, handlers, and formatters.

Which metric type in `prometheus_client` should you use to track the duration of HTTP request processing times?

Answer: Histogram

Histogram tracks observations (like latency) in configurable buckets and supports percentile queries via `histogram_quantile`.

In Python's `logging` module, which propagation behavior is controlled by setting `logger.propagate = False`?

Answer: Stops log records from being passed to ancestor loggers

Setting `propagate = False` stops a logger from forwarding records up the hierarchy to parent/root loggers.

Which `pytest` fixture scope causes a fixture to be set up once per test session rather than once per test function?

Answer: scope='session'

`scope='session'` creates the fixture once for the entire test run, shared across all tests and modules.

Which Python package provides the `Sentry` SDK for capturing exceptions and performance data and reporting them to the Sentry.io platform?

Answer: sentry-sdk

The official package is `sentry-sdk`, installed via `pip install sentry-sdk` and initialized with `sentry_sdk.init()`.

When using Python's `logging` with multiple loggers, what naming convention allows hierarchical level inheritance between parent and child loggers?

Answer: Naming child loggers with dot-separated names like 'parent.child'

Loggers named `app.module.submodule` automatically form a hierarchy where children inherit the effective level of their parents.