@CachePut for updating cache in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to use @CachePut to update the cache after method execution.

Spring Boot

@CachePut(value = "users", key = "#user.id")
public User [1](User user) {
    // update user logic
    return user;
}

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

AdeleteUser

BgetUser

CupdateUser

DcreateUser

Attempts:

3 left

💡 Hint

Common Mistakes

Using @CachePut on a method that only retrieves data without updating.

Choosing a method name that does not indicate updating.

The method annotated with @CachePut should update the cache, so the method name 'updateUser' fits the purpose.

2fill in blank

medium

Complete the code to specify the cache key using SpEL expression in @CachePut.

Spring Boot

@CachePut(value = "products", key = "[1]")
public Product updateProduct(Product product) {
    // update logic
    return product;
}

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

Aid

B#product.id

C#id

Dproduct.id

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting '#' in the SpEL expression.

Using a variable name not matching the method parameter.

The key expression in @CachePut uses SpEL and must reference the method parameter with #, so '#product.id' is correct.

3fill in blank

hard

Fix the error in the @CachePut annotation to correctly update the cache for the method.

Spring Boot

@CachePut(value = "orders", key = "[1]")
public Order updateOrder(Order order) {
    // update order logic
    return order;
}

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

A#orderId

Border.id

CorderId

D#order.id

Attempts:

3 left

💡 Hint

Common Mistakes

Using a key expression without '#' symbol.

Referencing a variable name not declared as a parameter.

The key must use SpEL with '#' and match the method parameter name, so '#order.id' is correct.

4fill in blank

hard

Fill both blanks to correctly use @CachePut with cache name and key expression.

Spring Boot

@CachePut(value = "[1]", key = "[2]")
public Customer updateCustomer(Customer customer) {
    return customer;
}

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

Acustomers

B#customer.id

C#id

Dusers

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong cache name that does not match the entity.

Incorrect key expression without '#' or wrong parameter name.

The cache name is 'customers' and the key expression must reference the method parameter with '#customer.id'.

5fill in blank

hard

Fill all three blanks to create a method that updates cache with @CachePut, specifying cache name, key, and method name.

Spring Boot

@CachePut(value = "[1]", key = "[2]")
public Product [3](Product product) {
    // update logic
    return product;
}

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

Aproducts

B#product.id

CupdateProduct

DsaveProduct

Attempts:

3 left

💡 Hint

Common Mistakes

Using inconsistent cache names.

Incorrect key expressions missing '#'.

Method names that do not reflect updating.

The cache name is 'products', the key expression is '#product.id', and the method name 'updateProduct' clearly indicates updating.