Why Does My Spring Boot App Crash While Netty Still Runs? A Deep Dive

During a gray‑release a single server reported that the Spring container was closed while the Netty server still accepted HTTP requests, leading to an IllegalStateException; the article analyzes the root cause in Dubbo startup, explains the event flow, and proposes a reliable fix using ApplicationReadyEvent.

ApplicationReadyEventContextRefreshedEventDubbo

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Why Does My Spring Boot App Crash While Netty Still Runs? A Deep Dive

Cognitive Technology Team

May 20, 2022 · Backend Development

Implementing Business Data Pre‑warming in Spring Using SmartLifecycle and ContextRefreshedEvent

To pre‑warm business data before a Spring web service accepts requests, the article explains two approaches—implementing the SmartLifecycle interface with proper phase ordering and using a ContextRefreshedEvent listener—while highlighting code examples, execution timing, and cautions against asynchronous overrides.

BackendContextRefreshedEventSmartLifecycle

0 likes · 7 min read

Implementing Business Data Pre‑warming in Spring Using SmartLifecycle and ContextRefreshedEvent