Deferred Initialization using @Lazy

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Deferred Initialization using @Lazy

The @Lazy annotation prevents Spring from creating a bean at startup. Instead, it is initialized only when it is first requested, which can speed up application startup.

snippet.java
java
@Service
public class ReportService {
    @Lazy
    @Autowired
    private HeavyEmailClient emailClient;
 
    public void send() {
        emailClient.dispatch();
    }
}

spring

Breakdown

@Lazy

Indicates whether a bean is to be lazily initialized.

@Autowired

Spring injects a proxy instead of the real bean until the first method call occurs.

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Deferred Initialization using @Lazy

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