# fuzhengwei/itstack-demo-design

:art: 《重学Java设计模式》是一本互联网真实案例实践书籍。以落地解决方案为核心，从实际业务中抽离出，交易、营销、秒杀、中间件、源码等22个真实场景，来学习设计模式的运用。欢迎关注小傅哥，微信(fustack)，公众号：bugstack虫洞栈，博客：https://bugstack.cn

Repository: https://github.com/fuzhengwei/itstack-demo-design
Canonical: https://ross.abutalabs.com/products/itstack-demo-design
Homepage: https://bugstack.cn
Language: Java
License: Apache-2.0
License Family: permissive
Topics: java, springboot
Last push: 2024-05-10T10:05:58+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2296, "days_push": 845, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6776, forks 1967 (observed 2026-08-28T04:09:48.495570+00:00)

## What it is
The companion code repository for the book 'Relearning Java Design Patterns' (重学Java设计模式) by 小傅哥, containing runnable Java/Spring Boot examples of 22 real-world scenarios such as trading, marketing, and seckill systems. It teaches GoF design patterns through practical, business-driven case studies rather than abstract definitions.

## Use cases
- learn design patterns with real Java examples
- study how patterns apply to e-commerce and marketing systems
- prepare for Java interviews on design patterns
- find reference implementations of factory, strategy, and builder patterns
- practice refactoring messy business code with patterns

## When to choose
- you are a Java developer wanting practical pattern examples
- you prefer learning from business scenarios like seckill or lottery systems
- you want free companion code for the design patterns book

## When to avoid
- you need design pattern examples in languages other than Java
- you want a design patterns library to import into your project
- you need an actively maintained framework rather than educational code

## Facets
- artifact type: learning-resource
- maturity: stable
- function: developer-tools, documentation
- domain: tutorials, programming-languages, education, developer-tools
- platform: jvm, cross-platform
- tags: design-patterns, java, springboot, book-examples, gof-patterns, real-world-scenarios

## Member repositories
- fuzhengwei/itstack-demo-design (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:48.495570+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 2026-08-29T17:42:23.506347+00:00, confidence not recorded.
  - readme: https://github.com/fuzhengwei/itstack-demo-design (fetched 2026-08-28T04:09:48.495570+00:00, sha 26523331a4c8)
  - homepage: https://bugstack.cn (fetched 2026-08-29T08:38:33.141774+00:00, sha e727ef12aa21)
  - site_page: https://bugstack.cn/md/about/me/about-me.html (fetched 2026-08-29T08:38:33.144600+00:00, sha 2aafeb43d0e4)
- Data as of 2026-08-30T08:39:29.467469+00:00.