DOCUMENT
THE WHOLE
SYSTEM.

01 / Start here Beginner → advanced

Developer learning roadmap

A practical order for learning programming, DSA, web development, databases, systems, testing, and production deployment.

roadmapstudybeginnercareer

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02 / Start here Beginner

Programming fundamentals

The core ideas shared by nearly every programming language: data, control flow, functions, scope, errors, files, and program structure.

variablesloopsfunctionsoop

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03 / Languages Beginner → intermediate

Python application development

Python fundamentals, type hints, modules, virtual environments, data structures, exceptions, and application organization.

pythonvenvtypingmodules

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04 / DSA + algorithms Intermediate

Trees, heaps, and graphs

Hierarchical structures, priority queues, graph models, BFS/DFS, and how these structures map to real software problems.

treeheapgraphbfs

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05 / Web + frameworks Intermediate

HTTP, REST APIs, and backend design

Requests, responses, status codes, JSON APIs, validation, idempotency, pagination, authentication, and API boundaries.

httprestapijson

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06 / Web + frameworks Intermediate

Flask and Django frameworks

How Flask and Django organize Python web applications, where each fits, and the production concerns both frameworks share.

flaskdjangopythonframework

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07 / Data + backend Intermediate → advanced

Backend architecture and data integrity

Service boundaries, validation, transactions, migrations, concurrency, caching, and designing state changes that remain correct under failure.

backendtransactionsmigrationsconcurrency

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08 / Systems + delivery Intermediate

Linux, networking, and Docker

Linux service basics, permissions, ports, IP addressing, sockets, reverse proxies, containers, and deployment troubleshooting.

linuxnetworkingdockerports

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09 / Systems + delivery Intermediate

Testing and debugging

Unit, integration, regression, security, migration, and deployment tests plus a systematic debugging method.

testingpytestdebuggingregression

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10 / CodeDev system System reference

CodeDev deployment and operations

Render/Docker production configuration, PostgreSQL, Cloudinary, Redis/Valkey, migrations, uptime monitoring, health checks, recovery, and deployment verification.

codedevrenderdockerdeployment

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11 / CodeDev system System reference

CodeDev inquiries, CRM, and Resend notifications

The implemented contact-to-CRM flow, preferred-contact data, Resend owner notifications, retry behavior, and what the system does not claim about final email delivery.

codedevcontactcrmresend

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12 / CodeDev system System reference

CodeDev privacy and inquiry retention

How the implemented Privacy Request flow, inquiry closure timestamp, retention window, dry-run purge, permanent purge, and backup limitations work.

codedevprivacyretentionlead

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13 / CodeDev system System reference

CodeDev release qualification and evidence

The exact meaning of Security-Hardened-RC versus Production-Qualified and the canonical qualification path used by local operators and GitHub Actions.

codedevreleasequalificationci

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