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Dashboard Learn Handbook Labs Practice library Learning paths Review Insights Studios Mock interviews Notebook

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Patterns beyond GoF · designlab

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Part 5 · Module 8

Patterns beyond GoF

Enterprise and architectural patterns essential for production systems: repository, unit of work, null object, specification, layered architecture, and plugin registries.

0 of 5 lessons30 min

8.1Repository and unit of workUp next6m
8.2Null object6m
8.3Specification6m
8.4MVC, MVVM and layered architecture6m
8.5Plugin registry6m
LabPatterns Beyond GoF: Enterprise Data and Domain LogicFinish “Behavioral Patterns: Algorithms, Traversal, and State” first35m

Practice what this module teaches

Double-entry Ledger Model LLDPost balanced immutable journal entries with exact arithmetic and idempotent references.Advanced55 min Coupon Rule Engine LLDEvaluate composable discount rules with exact arithmetic and atomic redemption limits.Intermediate45 min Library Management LLDModel titles, physical copies, loans and reservations without double lending.Intermediate

40 min

Dependency Injection Container LLDResolve object graphs with scopes, cycle detection and deterministic cleanup.Advanced45 min