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Aporeon

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Django Backend

Django request lifecycle, ORM boundaries, middleware, settings, migrations, and maintainable backend services.

24 drillsPractice one at a timeOrdered pathConcept questionComparison questionArchitecture scenarioDebugging scenario

Recommended start

What Django provides

Defines Django as a batteries-included Python web framework and separates framework conveniences from application design.

Easy~5 minStep 1 of 24

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1What Django providesRecommended startDefines Django as a batteries-included Python web framework and separates framework conveniences from application design.Concept questionEasy~5 minDjangoPythonPractice 2

Practice order

24 drillsOne at a time

1What Django providesUp next / Easy / ~5 min
2Django request lifecycleMedium / ~10 min
3Django project vs appEasy / ~5 min
4

Django request lifecycle

Traces a Django request through middleware, URL resolution, a view, application work, and response processing.

Concept questionMedium~10 minDjangoPython

Practice

3Django project vs appSeparates deployment-level Django configuration from cohesive application features and explains the app registry.Comparison questionEasy~5 minDjangoPythonPractice

4Django settings by environmentOrganizes Django configuration without duplicating environments or leaking secrets into source code.Architecture scenarioMedium~10 minDjangoPythonPractice

5Django URL routingExplains ordered URL matching, included URL configurations, reverse lookup, and application namespaces.Concept questionMedium~10 minDjangoPythonPractice

6Function vs class-based viewsChooses Django view style by clarity, reuse, and lifecycle needs rather than hierarchy preference.Comparison questionMedium~10 minDjangoPythonPractice

7Django middleware orderExplains Django's nested middleware stack, short-circuiting, exceptions, and response unwinding.Architecture scenarioHard~15 minDjangoPythonPractice

8Django WSGI, ASGI, and asyncConnects Django deployment interfaces with the real sync and async call chain.Comparison questionHard~15 minDjangoPythonPractice

9Django model validationDistinguishes Django model saving, explicit model validation, form validation, and database constraints.Concept questionMedium~10 minDjangoPythonPractice

10Django business logic placementBalances model methods, QuerySets, managers, and application services by the responsibility they own.Architecture scenarioHard~15 minDjangoPythonPractice

11Django signals vs explicit callsUses Django signals selectively and makes transaction timing and side effects explicit.Comparison questionHard~15 minDjangoPythonPractice

12Django historical modelsExplains migration state, historical model lookup, replay safety, and the limits of migration-time models.Debugging scenarioHard~15 minDjangoPythonPractice

13What DRF addsDefines DRF as an API toolkit layered on Django rather than a replacement framework.Concept questionEasy~5 minDjangoDjango REST FrameworkPythonPractice

14DRF parsing and renderingExplains how DRF turns an HTTP representation into request data and selects a response representation.Concept questionMedium~10 minDjangoDjango REST FrameworkPythonPractice

15Serializer vs ModelSerializerCompares explicit DRF serializers with model-derived serializer convenience and coupling.Comparison questionMedium~10 minDjangoDjango REST FrameworkPythonPractice

16DRF validation boundariesKeeps representation validation at the API boundary and moves changing workflows to explicit application owners.Comparison questionMedium~10 minDjangoDjango REST FrameworkPythonPractice

17Choosing a DRF view abstractionChooses the smallest DRF view abstraction that expresses an endpoint clearly.Comparison questionMedium~10 minDjangoDjango REST FrameworkPythonPractice

18DRF request lifecycleBuilds a useful DRF lifecycle model for policy checks, handler execution, exception conversion, and rendering.Concept questionHard~15 minDjangoDjango REST FrameworkPythonPractice

19DRF behavior by actionVaries DRF query and representation behavior deliberately across list, detail, and write actions.Architecture scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

20DRF object permission limitsExplains why object checks do not automatically filter list results or authorize object creation.Architecture scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

21Writable nested serializersMakes nested create and update semantics, authorization, identity, and transaction ownership explicit.Architecture scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

22DRF serializer N+1 queriesTraces serializer relation access back to queryset loading and verifies the fix with query evidence.Debugging scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

23DRF partial update guaranteesDefines omission, nullability, field ownership, invariants, concurrency, and effects for DRF partial updates.Architecture scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

24DRF global error contractMaps DRF and application failures into stable client errors while preserving internal diagnostic evidence.Architecture scenarioHard~15 minDjangoDjango REST FrameworkPythonPractice

Django settings by environment

Medium / ~10 min

5Django URL routingMedium / ~10 min

6Function vs class-based viewsMedium / ~10 min

7Django middleware orderHard / ~15 min

8Django WSGI, ASGI, and asyncHard / ~15 min

+16 more drills in this section

Django Backend - Python Backend | Aporeon