How to Slash Spring Boot Startup Time from 10s to Sub‑Second: Proven Techniques

This article explores comprehensive strategies for dramatically reducing Spring Boot application startup latency, covering real‑world case studies, dependency slimming, JVM and CDS tuning, lazy and asynchronous bean initialization, GraalVM native image compilation, and advanced runtime techniques such as CRaC, with detailed metrics and step‑by‑step guidance.

Bean InitializationCDSCRaC

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How to Slash Spring Boot Startup Time from 10s to Sub‑Second: Proven Techniques

Xuanwu Backend Tech Stack

Jul 1, 2025 · Backend Development

Mastering Spring Bean Initialization: @PostConstruct, InitializingBean, and init‑method Explained

This article explains the three Spring bean initialization callbacks—@PostConstruct, InitializingBean, and init‑method—their fixed execution order, underlying processing mechanisms, code examples, and guidance on choosing the most suitable approach for different development scenarios.

Bean InitializationInitializingBeanJava backend

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Mastering Spring Bean Initialization: @PostConstruct, InitializingBean, and init‑method Explained

Spring Full-Stack Practical Cases

May 14, 2024 · Backend Development

How Spring 6.2 Eliminates Bean Initialization Blocking and Boosts Startup Speed

Spring 6.2 introduces asynchronous bean initialization, a new addSingletonCallback mechanism, global transaction rollback settings, and injection performance optimizations, eliminating blocking during multi‑threaded event publishing and dramatically reducing startup time, as demonstrated with code examples and performance test results.

Bean Initializationmultithreadingperformance optimization

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How Spring 6.2 Eliminates Bean Initialization Blocking and Boosts Startup Speed

Cognitive Technology Team

May 20, 2022 · Backend Development

Controlling Bean Initialization Order in Spring: Using @Autowired, @Resource, @Inject and @DependsOn

This article explains how Spring developers can explicitly control bean instantiation order by using dependency‑injection annotations such as @Autowired, @Resource, @Inject, and the @DependsOn annotation, detailing the underlying processors and showing code examples for each mechanism.

Bean Initializationdependency-injectionjava

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Controlling Bean Initialization Order in Spring: Using @Autowired, @Resource, @Inject and @DependsOn

Architect's Journey

Mar 23, 2022 · Backend Development

Alibaba Interview: Tackling Spring’s Circular Dependency “Chain of Questions”

The article breaks down Spring's circular dependency problem, explains its three typical forms, details the three‑level cache mechanism with code snippets, walks through the step‑by‑step resolution process, and lists scenarios where Spring cannot resolve such dependencies.

Bean InitializationThree-level Cachecircular-dependency

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Alibaba Interview: Tackling Spring’s Circular Dependency “Chain of Questions”

Architect

Feb 5, 2021 · Backend Development

Spring Container Startup Listeners and Initialization Techniques

This article explains various ways to execute custom logic during Spring container startup, covering bean constructors, @PostConstruct, InitializingBean, ApplicationListener events, @EventListener, constructor injection, CommandLineRunner, and SmartLifecycle, with code examples and usage guidelines.

ApplicationListenerBean InitializationCommandLineRunner

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Spring Container Startup Listeners and Initialization Techniques