Web Architecture Techniques and Goals

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Questions and Answers

What is the primary benefit of using lazy loading for non-critical resources?

It allows faster initial rendering of critical content. (correct)

It ensures all resources load simultaneously.

It delays the loading of only non-essential resources.

It preloads all resources before user interaction.

What is the main purpose of using the Common Plugin API in drop-ins?

To allow developers to bypass bootstrap files.

To create a uniform structure across all applications.

To integrate plugins for improved discoverability. (correct)

To limit drop-in functionalities to a single application.

Which tool is specifically mentioned for performance testing?

Jest

React

Google Lighthouse (correct)

UglifyJS

What role does dc-core serve within the application ecosystem?

A library that connects to third-party libraries, ensuring compatibility. Signup and view all the answers

How does proper versioning contribute to modifiability in Drop-in components?

It integrates various applications for compatibility. Signup and view all the answers

What is the role of dropin discovery in enhancing Drop-in features?

It provides a centralized reference for features and providers. Signup and view all the answers

What is a primary function of using Iframes in web applications?

To embed third-party content without modifying the parent application. Signup and view all the answers

Which tool is specifically mentioned as a custom solution for discovering drop-ins?

dc-discovery Signup and view all the answers

What is a key characteristic of the plug-and-play feature of Drop-in components?

Standard methods like 'executeAction' facilitate integration. Signup and view all the answers

What is a major consequence of slow first load times for applications?

Decreased overall user experience Signup and view all the answers

Which feature aids in immediate tool accessibility during PDF rendering?

Employing thumbnails for user feedback. Signup and view all the answers

What approach improves the user experience by optimizing PDF loading times?

Implementing async loads for non-critical resources. Signup and view all the answers

Which of the following BEST describes the nature of modular 'Drop-In' architecture?

It encourages independent feature development and reusability. Signup and view all the answers

What is the significance of optimizing assets such as CSS and JavaScript?

To enhance the first load time of applications. Signup and view all the answers

Which development framework is stated as beneficial for building user interfaces?

React Signup and view all the answers

When integrating a drop-in, which file is essential for initialization?

bootstrap.js Signup and view all the answers

What is the primary purpose of using feature flags in the system?

To provide easy feature removal for streamlined functionality and user experiences Signup and view all the answers

How does the feature flagging system benefit the architecture?

It allows immediate adaptation to user feedback without code changes. Signup and view all the answers

Which architecture allows dynamic, replaceable parts to add functionality without altering the core system?

Plug-and-Play Architecture Signup and view all the answers

What does the Layers Pattern promote in the system architecture?

Clear responsibility and maintainability Signup and view all the answers

What is a feature management tool mentioned for handling feature flags?

Sophia Signup and view all the answers

How does the architecture facilitate continuous A/B testing?

By allowing feature removal without affecting site layout Signup and view all the answers

In what scenario is the Plug-and-Play Architecture utilized?

In the Viewer Drop-in for integrating additional functionalities Signup and view all the answers

What is a major advantage of avoiding code updates when using feature flags?

It allows for continuous user feedback integration. Signup and view all the answers

What is the function of Dropins within the application?

To provide a modular component that extends application functionality. Signup and view all the answers

What does the term 'Bootstraping' refer to in the context provided?

The initialization of Dropins using a common interface. Signup and view all the answers

Which statement best describes Ethos?

An internal CI/CD solution based on GitOps for Kubernetes deployments. Signup and view all the answers

What role does the dc-core library play in application development?

It acts as the core structure for building and integrating Dropins and Providers. Signup and view all the answers

What is the primary purpose of Moonbeam in the mentioned architecture?

To control the deployment of Dropins and Providers across different environments. Signup and view all the answers

What is the primary purpose of the view-sdk-bundle in the architecture?

To create the basic structure and initialize the viewer. Signup and view all the answers

Which layer directly interacts with WASM files to display content on the canvas?

Layer 2: Rendition Dropin Signup and view all the answers

Which aspect of the architecture allows for asynchronous bootstrapping of dropins?

The view-sdk-bundle structure. Signup and view all the answers

What does the Embed SDK consume to render Adobe's PDF Application?

The view-sdk-bundle. Signup and view all the answers

From which layer does the basic rendering of the PDF files start?

Layer 2: Rendition Dropin Signup and view all the answers

What is the role of the Preview Dropin within the architecture?

To allow user interactions such as comments and annotations. Signup and view all the answers

What allows the architecture to be consumed by various clients like GDrive and MS Teams?

The core Embed SDK structure. Signup and view all the answers

Which layer serves as the engine for PDF rendering, written in C++?

Layer 0: T5 Signup and view all the answers

Study Notes

Architecture Goals

Drop-in Integration: Ensure drop-ins contribute to building composite applications by effectively utilizing shared services and data.
Interoperability: Achieve interoperability between modules and iframes.
Performance: Optimise first page load and first action availability.
Modifiability: Allow easy addition and removal of features.

Architecture Techniques

Modular "Drop-In" Architecture:
- Drop-ins are grouped into iframes to create cohesive web apps, with a standard structure and a bootstrap.js file for initialization.
- Modules promote reusability and maintainability, while iframes embed third-party content without altering the parent application.
Performance Optimization:
- Asset Optimization: Reduce the size of CSS, JavaScript, and images.
- Lazy Loading: Load non-critical resources only when needed.
- Asynchronous Loading: Load JavaScript files without waiting for rendering.
Drop-In Components:
- Introduce new functionalities in existing drop-ins to improve capabilities and user experience.
- Use proper versioning for integration with other applications.
- Employ a drop-in discovery system for a single source of truth for providers and drop-ins.
- Implement plug-and-play functionality for seamless feature addition.
Feature Flags for Gradual Removal:
- Enable easy removal of features for streamlined functionality and user experiences.
- This caters to frequent A/B testing and adapts to user feedback or changing business needs without requiring code updates and redeployments.
Feature Management Tools:
- Utilize feature management tools like Sofia for effective management of feature flags.

Architecture Patterns

Plug-and-Play Architecture (Drop-ins): This supports dynamic replaceable parts for extending functionality without interfering with the core system.
Layers Pattern: System components are organized in a structured stack of layers, each level dependent on the level below, promoting clear responsibilities and maintainability.

Deployment

Ethos: Internal GitOps-based Kubernetes-native CI/CD solution for deploying drop-ins and providers.
Moonbeam: Deployment pipeline for controlling deployments in multiple environments.

Key Learnings

Understanding the evolution of architecture decisions over time.
Representing architecture for different stakeholders.
Understanding how deployments occur and viewing the system from a holistic perspective.
Identifying and measuring relevant tactics within designs.
Developing a critical analysis of complex architectures.

Terminology

Drop-in: A modular component that delivers a feature for the PDF application.
Provider: A service that provides specific functionality or information to applications.
dc-core: A core library for integrating drop-ins and providers into an application.
dc-discovery: A tool for discovering and managing drop-ins and providers.
DropinHarness: A development harness for local testing of drop-ins.

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Description

Explore the essential goals and techniques of web architecture, focusing on modular 'drop-in' structure, performance optimization, and interoperability between modules and iframes. This quiz will test your understanding of how to build efficient and maintainable web applications.