Tech Notes

     Let’s dive into debugging memory leaks step-by-step using tools like Chrome DevTools  and best practices for Angular. We’ll focus on identifying and fixing issues effectively. 1. Understanding the Tools Browser DevTools: Performance Tab : Monitor memory usage over time. Memory Tab : Analyze heap snapshots and memory retention. Console : Observe memory usage using the window.performance.memory object (not in all browsers). Augury Extension : Provides Angular-specific insights such as component hierarchies and bindings. Can highlight improper use of change detection or subscriptions. RxJS Spy : Helps track Observables and their subscriptions in real time. 2. Step-by-Step Debugging Step 1: Record Memory Usage Use the Performance Tab in Chrome DevTools: Open DevTools ( Ctrl + Shift + I or F12 ). Go to the Performance tab. Click Record and interact with your application (e.g., navigate between components). Stop recording and review: Look for steady memory incre...

     A memory leak occurs when an application consumes memory that it no longer needs but fails to release. Over time, this unneeded memory builds up, reducing the available memory for the application or other processes. This can lead to performance degradation, crashes, or application instability. In the context of Angular (or any JavaScript application), memory leaks often happen when objects or references remain in memory longer than necessary because: The garbage collector cannot reclaim them. They are inadvertently kept alive by event listeners , subscriptions , or references . How Memory Management Works in JavaScript JavaScript uses automatic garbage collection : When an object or value is no longer reachable, it is eligible for garbage collection. The garbage collector identifies and removes these unreachable objects to free up memory. However, if objects are still referenced (even unintentionally), the garbage collector cannot reclaim them, causing a memory le...

  Project Overview: Multi-Site Content Delivery Platform Objective : Create a multilingual, multi-site content delivery platform for a fictional global retail brand. The platform integrates AEM, Adobe Analytics, Target, Campaign, and other tools to deliver a personalized, high-performance experience. Project Goals Build a scalable AEM-based CMS with headless capabilities. Personalize user experiences using Adobe Target. Analyze user behavior with Adobe Analytics. Automate email campaigns with Adobe Campaign. Deploy the platform on a cloud-based infrastructure with CI/CD. Ensure performance optimization, security, and fault tolerance. Phase 1: Core AEM Setup Deliverables : Create a multi-language website using AEM Sites with MSM. Implement content fragments for headless API delivery. Build reusable editable templates for different content types. Tools : AEM Sites, MSM, Content Fragments. Tasks : Design the site structure (e.g., Home, Products, Blog). Create a content fragment model ...

  Phase 1: Mastering AEM Advanced Features – Weekly Schedule Week 1: Editable Templates & Content Fragments Objective : Master editable templates and content fragments for flexible content authoring. Tasks : Review editable templates' structure and policies. Practice creating editable templates for multiple page types. Explore content fragments: text, structured data, and variations. Build and use a sample content fragment model for headless use. Resources : Adobe Experience League: Editable Templates and Content Fragments guides. Hands-on: Create a blog template with reusable content fragments. Week 2: Advanced Sling Models and OSGi Configurations Objective : Deepen understanding of Sling Models and OSGi services. Tasks : Learn advanced Sling Models annotations (e.g., @Self , @ResourcePath ). Explore OSGi DS annotations for dependency injection. Create and deploy custom OSGi services and utilities. Resources : Adobe Documentation: Sling Models and OSGi guides. Practical Exerci...

  The META-INF/vault/filter.xml file is a critical part of an AEM (Adobe Experience Manager) content package. It belongs to the Apache Jackrabbit FileVault framework, which is responsible for managing repository-level content. Below is an in-depth exploration of the filter.xml file, its purpose, structure, and importance. Purpose of filter.xml The filter.xml file: Defines Repository Scope : Specifies which parts of the JCR repository (content or configuration nodes) are included in or excluded from the package. Enables selective deployment to avoid overwriting unintended parts of the repository. Controls Deployment Behavior : Dictates how package installation interacts with existing nodes and content in the repository. Ensures that only specified areas are updated, merged, or replaced. Supports Modularity : Allows modular packaging, where different parts of a project (e.g., /apps , /content , /etc ) are packaged and deployed independently. Enhances Maintainability : Enables de...