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Top Architecture Tech Stack
Top Architecture Tech Stack
Feb 24, 2025 · Backend Development

Optimizing SpringBoot Startup Time: Analyzing and Reducing Bean Scanning and Initialization Overheads

This article investigates why a SpringBoot service takes 6‑7 minutes to start, identifies the costly bean‑scanning and bean‑initialization phases, and demonstrates how to speed up startup to around 40 seconds using custom SpringApplicationRunListener, BeanPostProcessor monitoring, JavaConfig selective bean registration, and cache auto‑configuration adjustments.

Backend DevelopmentCachePerformance Optimization
0 likes · 20 min read
Optimizing SpringBoot Startup Time: Analyzing and Reducing Bean Scanning and Initialization Overheads
macrozheng
macrozheng
Feb 5, 2025 · Backend Development

How to Cut Spring Boot Startup Time from 7 Minutes to 40 Seconds

This article explains why a SpringBoot service took 6‑7 minutes to start, shows how to pinpoint the bottlenecks using SpringApplicationRunListener and BeanPostProcessor, and presents concrete optimizations—reducing scan paths, manually registering beans, and fixing cache auto‑configuration—to shrink the local startup time to about 40 seconds.

BeanPostProcessorCacheJavaConfig
0 likes · 18 min read
How to Cut Spring Boot Startup Time from 7 Minutes to 40 Seconds
Programmer DD
Programmer DD
Mar 21, 2022 · Backend Development

Why Spring’s Bean Scanning Can Trigger Unresolvable Circular References (and How to Fix It)

This article examines how Spring Boot 2.0.3 resolves (or fails to resolve) setter‑based circular dependencies, explores bean definition scanning order, bean definition overriding, and instantiation sequence that can lead to an “unresolvable circular reference” error, and then shifts to explain ZGC’s mark‑compact algorithm, its evolution before and after JDK 16, and its performance characteristics.

bean-scanningcircular-dependencyjava-gc
0 likes · 14 min read
Why Spring’s Bean Scanning Can Trigger Unresolvable Circular References (and How to Fix It)