Persisting store state in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does 'persisting store state' mean in Vue applications?

It means saving the data in the store so it stays even after the page reloads or the user closes the browser. This helps keep the app's state consistent.

beginner

Which browser storage options are commonly used to persist Vue store state?

LocalStorage and SessionStorage are common. LocalStorage keeps data even after closing the browser, while SessionStorage clears data when the tab closes.

intermediate

How can you automatically save Vue store state changes to LocalStorage?

You can watch the store state and save it to LocalStorage whenever it changes, or use plugins like vuex-persistedstate that handle this for you.

intermediate

What is a simple way to restore persisted state when a Vue app starts?

When the app loads, read the saved state from LocalStorage and replace the store's state with it, so the app continues where it left off.

advanced

Why should you be careful about what data you persist in the store?

Because sensitive data saved in LocalStorage can be accessed by anyone using the browser. Also, large data can slow down loading and cause bugs if outdated.

Which Vue plugin helps automatically persist store state to LocalStorage?

A vue-router

B vuex-persistedstate

C vue-loader

D vuex-logger

vuex-persistedstate is designed to save and restore Vuex store state automatically using browser storage.

What happens to data in SessionStorage when the browser tab closes?

A It is encrypted

B It is saved permanently

C It is sent to the server

D It is cleared

SessionStorage data is cleared when the browser tab or window closes.

Why might you not want to persist all Vue store data?

A Because it can cause security risks and slow loading

B Because Vue does not support persistence

C Because LocalStorage is too small

D Because persistence is automatic

Persisting sensitive or large data can cause security issues and performance problems.

Which method is commonly used to restore persisted state in Vuex?

A Replacing the store state on app start

B Using Vue Router guards

C Calling a Vue lifecycle hook

D Using CSS variables

Restoring persisted state usually involves replacing the Vuex store state with saved data when the app loads.

What is the main difference between LocalStorage and SessionStorage?

A SessionStorage is shared across tabs; LocalStorage is not

B SessionStorage is faster than LocalStorage

C LocalStorage persists after browser closes; SessionStorage does not

D LocalStorage encrypts data; SessionStorage does not

LocalStorage keeps data even after closing the browser, while SessionStorage clears data when the tab closes.

Explain how you would implement persisting Vue store state using LocalStorage.

Think about saving data when it changes and loading it back when the app starts.

What are the risks and best practices when persisting store state in a Vue app?

Consider security and performance when saving data.