Why caching improves performance in Azure - See It in Action

Why caching improves performance

📖 Scenario: You are working on a web application hosted on Azure. The app fetches user profile data from a database. To make the app faster and reduce database load, you want to use caching.

🎯 Goal: Build a simple Azure cache setup that stores user profile data temporarily to improve app performance.

📋 What You'll Learn

Create a dictionary called user_profiles with three user IDs and their names.

Create a variable called cache_duration_seconds and set it to 300.

Create a dictionary called cache to store cached user profiles.

Add a function called get_user_profile that checks the cache first, and if not found, fetches from user_profiles and caches it.

💡 Why This Matters

🌍 Real World

Web applications often use caching to speed up data retrieval and reduce database costs.

💼 Career

Cloud engineers and developers use caching to optimize app performance and scalability.

1

Create initial user profile data

Create a dictionary called user_profiles with these exact entries: "user1": "Alice", "user2": "Bob", "user3": "Charlie".

Azure

# Your code here

Need a hint?

Use curly braces to create a dictionary with keys and values.

2

Set cache duration

Create a variable called cache_duration_seconds and set it to 300.

Azure

user_profiles = {"user1": "Alice", "user2": "Bob", "user3": "Charlie"}
# Your code here

Need a hint?

Just assign the number 300 to the variable cache_duration_seconds.

3

Create cache dictionary

Create an empty dictionary called cache to store cached user profiles.

Azure

user_profiles = {"user1": "Alice", "user2": "Bob", "user3": "Charlie"}
cache_duration_seconds = 300
# Your code here

Need a hint?

Use empty curly braces to create an empty dictionary.

4

Add caching function

Create a function called get_user_profile that takes user_id as input. Inside, check if user_id is in cache. If yes, return the cached value. If not, get the profile from user_profiles, store it in cache, then return it.

Azure

user_profiles = {"user1": "Alice", "user2": "Bob", "user3": "Charlie"}
cache_duration_seconds = 300
cache = {}
# Your code here

Need a hint?

Use if user_id in cache to check cache. Use user_profiles.get(user_id) to get profile safely.