@Cacheable for read caching in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable caching on the method.

Spring Boot

@Cacheable(value = "books")
public Book [1](Long id) {
    // method body
}

Drag options to blanks, or click blank then click option'

AfindBookById

BgetBookById

CsaveBook

DdeleteBook

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that implies writing or deleting data.

Not matching the method name to the caching purpose.

The method name 'getBookById' is a common naming for read operations suitable for caching.

2fill in blank

medium

Complete the annotation to specify the cache name.

Spring Boot

@Cacheable(value = "[1]")
public Book getBookById(Long id) {
    // method body
}

Drag options to blanks, or click blank then click option'

Abooks

Borders

Cusers

Dauthors

Attempts:

3 left

💡 Hint

Common Mistakes

Using a cache name unrelated to the method's data.

Using plural vs singular inconsistently.

The cache name 'books' matches the data type being cached.

3fill in blank

hard

Fix the error in the cache key expression.

Spring Boot

@Cacheable(value = "books", key = "#[1]")
public Book getBookById(Long id) {
    // method body
}

Drag options to blanks, or click blank then click option'

Aparam

BbookId

Ckey

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using a key that does not match any method parameter.

Forgetting the '#' symbol in the key expression.

The parameter name is 'id', so the key expression must use '#id' to cache by method argument.

4fill in blank

hard

Fill both blanks to create a cacheable method with a custom key.

Spring Boot

@Cacheable(value = "books", key = "#[1]")
public Book [2](Long bookId) {
    // method body
}

Drag options to blanks, or click blank then click option'

AbookId

BgetBook

CfindBook

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between key and parameter name.

Using a method name that implies writing data.

The key uses the parameter 'bookId' and the method name 'findBook' fits a read operation.

5fill in blank

hard

Fill all three blanks to define a cacheable method with a cache name, key, and method name.

Spring Boot

@Cacheable(value = "[1]", key = "#[2]")
public Book [3](Long id) {
    // method body
}

Drag options to blanks, or click blank then click option'

Aauthors

Bid

CgetBookById

Dbooks

Attempts:

3 left

💡 Hint

Common Mistakes

Using a cache name unrelated to the method.

Key not matching the parameter name.

Method name not indicating a read operation.

The cache name is 'books', the key matches the parameter 'id', and the method name is 'getBookById'.