When not to use lazy loading | Angular tutorial in English (Session-237)

Описание: When NOT to Use Lazy Loading | Angular tutorial in English (Session-237)

In this Angular session, learn the important scenarios where lazy loading should NOT be used. While lazy loading greatly improves performance, using it everywhere can actually slow down your application, create unnecessary complexity, and negatively impact user experience. This session helps you understand when eager loading is the better choice.

What You’ll Learn in This Video:

1.When lazy loading becomes harmful instead of beneficial

2.Scenarios where eager loading performs better

3.Modules that should always load upfront

4.Why overusing lazy loading impacts UX

5.How lazy loading affects shared components and services

6.When lazy loading causes unnecessary network calls

7.Best practices for mixing eager and lazy loading correctly

Concept Breakdown:

🔹 Core / Essential Modules:
Modules required immediately after app startup — Home, Auth, Layout, Shared UI — should not be lazy loaded.

🔹 Frequently Visited Routes:
Lazy loading routes visited repeatedly creates repeated network fetches and slower navigation.

🔹 Very Small Modules:
If a module contains only 1–2 components, lazy loading adds unnecessary overhead.

🔹 Shared Services & Global State:
Lazy loading can create multiple instances of shared services, breaking state management.

🔹 Critical UX Features:
Anything needed instantly — header, footer, menus, dashboards — must be eagerly loaded.

🔹 SEO-Sensitive Apps (SSR):
Lazy loading might delay content rendering, impacting indexing and page performance.

🔹 Apps with Poor Network Connectivity:
Too many lazy-loaded chunks can cause delays on slow networks.

FAQs (When NOT to Use Lazy Loading)

Q1: Which modules should never be lazy loaded?
Q2: Does lazy loading slow down frequently visited pages?
Q3: Can lazy loading break shared services?
Q4: Is lazy loading good for small feature modules?
Q5: How do I decide between lazy loading and eager loading?

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