Caching strategies in Wordpress - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is caching in WordPress?

Caching in WordPress means saving copies of your website pages or data so they load faster next time someone visits. It helps reduce the work your server does and speeds up your site.

beginner

Name two common types of caching used in WordPress.

Two common types are:<br>1. Page Caching - saves full HTML pages.<br>2. Object Caching - saves database query results or objects.

intermediate

What is the difference between server-side caching and browser caching?

Server-side caching stores data on the web server to speed up responses.<br>Browser caching stores files on the visitor's device to avoid re-downloading them on repeat visits.

beginner

How does a caching plugin improve WordPress performance?

A caching plugin creates and serves saved copies of pages or data quickly, reducing the need to run heavy database queries or PHP code every time. This makes pages load faster for visitors.

intermediate

What is cache invalidation and why is it important?

Cache invalidation means clearing or updating cached data when the original content changes. It is important so visitors see the latest content and not outdated pages.

Which caching type saves full HTML pages in WordPress?

A Page Caching

B Object Caching

C Browser Caching

D Opcode Caching

Page caching saves the entire HTML page to serve it quickly without rebuilding it each time.

What does object caching store?

A Full HTML pages

B Browser cookies

C Images and CSS files

D Database query results or objects

Object caching stores database query results or PHP objects to speed up repeated data access.

Why is cache invalidation necessary?

A To speed up the server

B To increase browser storage

C To clear outdated cached content

D To compress images

Cache invalidation clears or updates cached content so visitors see the latest version.

Which of these is NOT a caching strategy in WordPress?

A SQL Injection

B Object Caching

C Browser Caching

D Page Caching

SQL Injection is a security issue, not a caching strategy.

Where is browser caching data stored?

A On the web server

B In the visitor's device

C In the WordPress database

D In the caching plugin settings

Browser caching stores files on the visitor's device to avoid re-downloading them.

Explain how caching improves WordPress website speed and user experience.

Think about what happens when a website doesn't have to rebuild pages every time.

Describe the difference between page caching and object caching in WordPress.

Consider what each type stores and how it helps.