CommandLineRunner

Spring Full-Stack Practical Cases

Sep 23, 2024 · Backend Development

How to Load Initial Data into Spring Boot 3.2.5: Runners, Beans, and SQL Scripts

This guide explains why pre‑loading initial data is essential for Spring Boot applications and demonstrates four practical methods—CommandLineRunner/ApplicationRunner, bean initialization with @PostConstruct, SQL script execution, and @Sql annotation for tests—complete with code snippets and configuration details.

CommandLineRunnerData InitializationSQL Scripts

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How to Load Initial Data into Spring Boot 3.2.5: Runners, Beans, and SQL Scripts

Top Architect

Jul 2, 2024 · Backend Development

Cache Preheating in Spring: Abstract Cache, Context Utility, and Implementation

This article explains the concept of cache preheating, provides an abstract cache class, a Spring ApplicationContext utility, a CommandLineRunner handler to load hot data at startup, and demonstrates a concrete NewsCache implementation with Redis integration, followed by a REST endpoint to access the cached data.

AbstractCacheCache PreheatCommandLineRunner

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Cache Preheating in Spring: Abstract Cache, Context Utility, and Implementation

Spring Full-Stack Practical Cases

Jun 16, 2024 · Backend Development

Master SpringBoot Runners: ApplicationRunner vs CommandLineRunner Explained

This guide explains how to run custom code after SpringApplication starts by implementing ApplicationRunner or CommandLineRunner, compares their method signatures and argument handling, shows execution timing, provides practical examples, and demonstrates how to control execution order with @Order or Ordered.

ApplicationRunnerCommandLineRunnerJava

0 likes · 7 min read

Master SpringBoot Runners: ApplicationRunner vs CommandLineRunner Explained

Code Ape Tech Column

Apr 17, 2024 · Backend Development

Spring Boot Startup Configuration Principles, Extension Points, and Performance Optimizations

This article explains the core principles of Spring Boot startup configuration, demonstrates how to intervene using ApplicationContextInitializer, SpringApplicationRunListener, ApplicationRunner, and CommandLineRunner, and provides practical optimization techniques to significantly reduce application launch time.

ApplicationRunnerCommandLineRunnerPerformance

0 likes · 32 min read

Spring Boot Startup Configuration Principles, Extension Points, and Performance Optimizations

Top Architect

May 25, 2021 · Backend Development

Spring Boot Resource Initialization: CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener

This article explains several Spring Boot techniques for initializing resources at application startup, including CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener, and provides code examples and usage guidelines for each method.

ApplicationListenerApplicationRunnerCommandLineRunner

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Spring Boot Resource Initialization: CommandLineRunner, ApplicationRunner, @Order, @PostConstruct, InitializingBean, and ApplicationListener

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