Object storage with hashes in Redis - Mini Project: Build & Apply

Object Storage with Hashes in Redis

📖 Scenario: You are managing a small online bookstore. You want to store information about books such as title, author, and price in Redis using hashes. This will help you quickly retrieve and update book details.

🎯 Goal: Build a Redis hash to store book details with fields for title, author, and price. Then add a helper variable for a book ID, update the hash with core book data, and finally add a field for stock quantity.

📋 What You'll Learn

Create a Redis hash key named book:1001 to store book details

Add a variable book_id with the value 1001

Use HSET to add fields title, author, and price to the hash

Add a new field stock with the value 30 to the hash

💡 Why This Matters

🌍 Real World

Storing objects like books in Redis hashes allows fast access and updates for web applications such as online stores.

💼 Career

Understanding Redis hashes is useful for backend developers working with caching, session storage, or real-time data storage.

1

Create a Redis hash key for the book

Create a Redis hash key named book:1001.

Redis

# Your code here to create the hash key book:1001

Need a hint?

Use the HSET command with the key book:1001 and field book_id value "1001".

2

Add a variable for the book ID

Create a variable called book_id and set it to the string "1001".

Redis

HSET book:1001 book_id "1001"
# Your code here to create the variable book_id

Need a hint?

Assign the string "1001" to the variable book_id.

3

Add book details to the hash

Use HSET with the key book:1001 to add fields title with value "Redis Basics", author with value "Jane Doe", and price with value 19.99.

Redis

HSET book:1001 book_id "1001"
book_id = "1001"
# Your code here to add title, author, and price fields

Need a hint?

Use one HSET command to add all three fields and their values.

4

Add stock quantity to the book hash

Add a new field stock with the value 30 to the Redis hash key book:1001 using HSET.

Redis

HSET book:1001 book_id "1001"
book_id = "1001"
HSET book:1001 title "Redis Basics" author "Jane Doe" price "19.99"
# Your code here to add stock field

Need a hint?

Use HSET again to add the stock field with value 30.