CodeDev
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CodeDev knowledge system / 31 chapters

DOCUMENT
THE WHOLE
SYSTEM.

A practical reference for programming, DSA, frameworks, databases, APIs, Linux, networking, testing, security, deployment, and the architecture behind CodeDev itself.

Chapters31Structured references
Sections7Learning areas
Code41Runnable examples
SystemLIVECodeDev architecture reference
Data + backend

Choose a chapter.

2 / 31
01 / Data + backend Intermediate

SQL, PostgreSQL, and Redis

Relational modeling, SQL queries, indexes, transactions, PostgreSQL production use, and Redis for shared ephemeral state.

sqlpostgresqlredisdatabase
02 / 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
Production reference

HOW CODEDEV
ACTUALLY WORKS.

01CodeDev system architecture↗ 02CodeDev database and data model↗ 03CodeDev authentication and Superadmin security↗ 04CodeDev Superadmin, media, and analytics↗ 05CodeDev deployment and operations↗ 06CodeDev inquiries, CRM, and Resend notifications↗ 07CodeDev privacy and inquiry retention↗ 08CodeDev release qualification and evidence↗