Error Handling in Flask APIs
Turn expected exceptions into consistent responses while keeping unexpected failures observable.
Building, consuming, and integrating REST APIs
Turn expected exceptions into consistent responses while keeping unexpected failures observable.
Accept uploads without trusting client-provided names, extensions, or media types.
Add cross-cutting request logic and allow only the browser origins your application needs.
Build Bearer-token login with protected passwords and reusable route authorization in FastAPI.
Choose the correct validation layer and keep rules predictable, testable, and free of I/O.
Authenticate shared-secret messages and compare signatures without content-dependent shortcuts.
Test FastAPI routes through their HTTP contract and replace external dependencies with guaranteed cleanup.
Reuse connections with ClientSession, configure deadlines, and bound concurrency when consuming APIs.
Model realistic journeys, ramp traffic gradually, and read percentiles and failures without creating an accidental attack.
Make HTTP requests with pooled connections, explicit timeouts, and the same core interface in synchronous or asynchronous code.
Start processes with separate arguments, enforce time limits, validate results, and keep untrusted input away from a shell.
Find potentially unsafe code patterns, investigate their context, and keep exceptions narrow and reviewable.