# linyimin0812/spring-startup-analyzer

spring-startup-analyzer generates an interactive spring application startup report that lets you understand what contributes to the application startup time and helps to optimize it.🚀

Repository: https://github.com/linyimin0812/spring-startup-analyzer
Canonical: https://ross.abutalabs.com/products/spring-startup-analyzer
Language: Java
License: Apache-2.0
License Family: permissive
Topics: async-spring-bean, startup-time-optimization, spring-startup-monitor, spring-startup-optimization, spring-boot-startup, spring-boot-startup-optimization, spring, spring-boot
Last push: 2025-07-10T02:12:54+00:00

## Health v2 (maintenance only)
Score: 34/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 30, release rhythm 8, longevity 87
- inputs: {"age_days": 1220, "days_push": 420, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1832, forks 148 (observed 2026-08-28T04:05:42.259970+00:00)

## What it is
A Java agent/library that instruments Spring and Spring Boot applications to collect startup data and generate an interactive HTML startup report. It also supports optimizing startup time via asynchronous bean initialization.

## Use cases
- analyze why my spring boot app starts slowly
- generate a spring bean initialization timeline report
- find unused jars in a fat jar
- profile application startup thread wall clock
- speed up spring boot startup with async beans
- locate slow bean initialization bottlenecks

## When to choose
- you run Spring or Spring Boot on the JVM and need to diagnose startup latency
- you want an interactive HTML report of bean initialization and method invocation times
- you want to try async bean initialization to reduce startup time

## When to avoid
- your application is not Spring/Spring Boot based
- you need continuous production APM rather than startup-time analysis
- you need a general-purpose JVM profiler beyond startup profiling

## Facets
- artifact type: library
- maturity: active
- function: monitoring, benchmarking, developer-tools
- domain: backend, performance, developer-tools
- platform: jvm, windows
- tags: spring-boot, startup-analysis, profiling, async-bean-initialization, performance-optimization, java, linux, macos

## Member repositories
- linyimin0812/spring-startup-analyzer (main) score 34

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:42.259970+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:19:09.793205+00:00, confidence not recorded.
  - readme: https://github.com/linyimin0812/spring-startup-analyzer (fetched 2026-08-28T04:05:42.259970+00:00, sha e1095e886e5d)
- Data as of 2026-08-30T08:39:29.467469+00:00.