The new Angular tutorial for SDuX Vault™ is built around a complete feature, not a pile of disconnected API samples. You start with an empty Angular project and finish with a typed FeatureCell™, a service-owned feature boundary, and a character workflow that can read, create, update, delete, filter, sort, and derive display-ready State.
That shape matters because state management becomes difficult at the boundaries between UI code, domain ownership, asynchronous inputs, and operational policy. The tutorial makes those boundaries visible while you build. Each chapter leaves you with a working checkpoint, a live StackBlitz project, and a clear reason to adopt—or skip—the next capability.
Key takeaway: The tutorial teaches a repeatable feature structure. Angular UI events call a feature service; the service owns its FeatureCell; the pipeline resolves and shapes a candidate; and the component reads the committed StateSnapshot.
Why This Tutorial Was Released
A typical quick-start example can show a successful state update in a few lines. It cannot show where the feature should live once the application needs selection, editing, validation, loading, error handling, persistence, or testing. Developers then fill in the missing architecture from memory, and the state boundary slowly moves into whichever component was edited last.
This Angular tutorial takes the opposite route. It keeps one feature in view while the requirements grow. The application is a Star Wars character registry, but the teaching target is the boundary: the service owns Feature State and FeatureCell access, while the component owns local presentation concerns and user interaction.
You do not need previous SDuX experience. The opening chapter explains the setup, the mental model, the expected environment, and the recommended path through the material. It also makes an important distinction early: the complete example demonstrates many capabilities, but a production feature should adopt the smallest set that matches its actual requirements.
From Project Setup to a Working Feature
The core path starts with the application boundary and ends with a useful read-and-write workflow. You define the Feature State, register the FeatureCell, connect it to an Angular service, and keep the component focused on rendering and interaction. The character workflow then grows in deliberate steps:
| Chapter focus | What you learn |
|---|---|
| Display a character | Establish a service-owned FeatureCell and expose committed State to the UI. |
| Display characters | Add selection without moving the collection or its ownership into the component. |
| Add/Edit characters | Use withArrayAppendMergeBehavior to append a new character or update an existing character while keeping collection updates inside the service-owned boundary. |
| Delete characters | Use withArrayByIdMergeBehavior to remove (add and edit) a character by identifier inside the service-owned boundary. |
| Lifecycle | Distinguish a persisted null value, a reusable reset, and permanent FeatureCell destruction. |
| Filters and reducers | Centralize filtering, sorting, labels, and display derivation before the UI renders State. |
The result is more useful than a finished screen. You can see why each responsibility belongs where it does, and you can carry that structure into a different feature instead of copying a component that happens to work for one demo.
The Feature Service Is the Teaching Boundary
The tutorial repeatedly returns to one rule: the component should not become the owner of Feature State just because it is the place where State is displayed. The service exposes the component-facing reactive State, while the service also owns the FeatureCell configuration and update methods.
The welcome chapter summarizes the flow like this: Angular UI action, feature service method, FeatureCell request, FeatureCell pipeline execution, committed StateSnapshot, component Signal or Observable, and finally the template. That sequence gives every later chapter a stable place to add behavior without changing the basic ownership model.
import {
ApplicationConfig,
provideBrowserGlobalErrorListeners,
provideZonelessChangeDetection
} from '@angular/core';
import { provideVault } from '@sdux-vault/angular';
export const appConfig: ApplicationConfig = {
providers: [
provideBrowserGlobalErrorListeners(),
provideZonelessChangeDetection(),
provideVault()
]
};
This is the tutorial's initial application configuration. Later checkpoints add the FeatureCell provider and the service-owned feature contract without changing the application runtime setup. The code is small; the important lesson is where the setup lives and how it prepares the application boundary for the feature.
Warning: Do not treat every value the UI needs as Feature State. The tutorial keeps selection, form mode, confirmation, and feedback local when they are presentation concerns. Shared domain State stays with the feature service.
Core Chapters First, Optional Labs Second
Chapters 1–7 form the main read, write, lifecycle, transformation, and error-management path. Chapters 8–15 then act as focused labs for requirements that will not belong in every application. That organization helps you learn the complete feature without turning every available capability into a mandatory checklist.
| Lab | Use it to explore |
|---|---|
| Errors | Failure observation and error handling at the feature boundary. |
| Async input | Promise, Observable, and Angular HTTP Resource inputs through the same feature boundary. |
| Delay | Timing policy for delayed state transitions when that requirement fits the application. |
| Encrypt and Persist | Encrypted, tab-scoped session persistence when that requirement fits the application. |
| State introspection | Observation points for explaining a transition without giving diagnostics authority over State. |
| Tab Sync | Same-origin coordination across browser tabs. |
| Distinct Until Changed | Deliberate suppression of semantically redundant candidates. |
| Stepwise | Explicit human or policy decisions at a pipeline boundary, treated as a comparison lab rather than a default. |
Each lab explains its boundary and its trade-offs. For example, Tab Sync coordinates finalized Feature State across same-origin browser tabs; it does not turn every form interaction into shared collaboration. Encrypted persistence protects values at the persistence boundary, but the tutorial still asks you to consider whether the data and threat model justify storing it locally.
Checkpoints Make the Tutorial Recoverable
Long tutorials fail when one missed import or one divergent file leaves the reader guessing what changed. This tutorial addresses that problem with chapter checkpoints. You can continue in one Angular project, or start a later chapter from the completed source of the preceding chapter.
Each chapter also provides a live StackBlitz project and a downloadable archive. Use the complete-file tabs to compare your checkpoint, inspect the action list to see what is new, and run the finished example when your local project has drifted. The result is a practical feedback loop: build, compare, understand, and then continue.
Key takeaway: Choose your route. Start at the beginning if you want the ownership model built from first principles. Start from a checkpoint when you already understand the core path and need to investigate one optional capability.
Deeper Dive
Open the Angular tutorial to build the feature step by step. Use the chapter labs to test a specific requirement, but keep the central boundary in view: the component renders and interacts, the feature service owns State, and the FeatureCell pipeline keeps the transition path explicit.
If you are evaluating SDuX Vault for an existing Angular application, the tutorial is also a useful architecture review. Compare its service boundary with your current feature, identify which concerns are mixed into the UI, and adopt only the chapters that address a real need.
Watch It
Pipeline Overview: https://www.youtube.com/watch?v=m7ClyWSh754
SDUX vs Redux O(n) Comparison: https://www.youtube.com/watch?v=aFTiIvR0H4M
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