# Jstarfish/JavaKeeper

✍️  Java 工程师必备架构体系知识总结：涵盖分布式、微服务、RPC等互联网公司常用架构，以及数据存储、缓存、搜索等必备技能

Repository: https://github.com/Jstarfish/JavaKeeper
Canonical: https://ross.abutalabs.com/products/javakeeper
Homepage: https://javakeeper.starfish.ink/
License Family: other
Topics: java, mysql, redis, linux, elasticsearch, s3, kafka, zookeeper, jvm, algorithms
Last push: 2025-10-10T09:31:37+00:00

## Health v2 (maintenance only)
Score: 53/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 46, release rhythm 35, longevity 100
- inputs: {"age_days": 2556, "days_push": 327, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2093, forks 270 (observed 2026-08-28T04:06:13.073107+00:00)

## What it is
JavaKeeper is a curated knowledge base of study notes and articles for Java engineers, organized as a GitBook/VuePress site. It covers JVM internals, concurrency, distributed systems, microservices, RPC, data storage, caching, and search technologies.

## Use cases
- prepare for Java backend interviews
- learn JVM internals and garbage collection
- understand Java concurrency and thread pools
- study distributed systems and microservices architecture
- review Redis caching and MySQL concepts
- learn Kafka and Elasticsearch fundamentals

## When to choose
- you are a Java engineer studying for interviews or system design
- you want a free, organized reference covering the Java backend ecosystem
- you prefer article-style explanations over official docs

## When to avoid
- you need runnable code or a production library
- you want authoritative, version-specific documentation
- you work outside the Java/backend ecosystem

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, developer-tools
- domain: developer-tools, tutorials, databases, microservices
- platform: jvm
- tags: java, jvm, interview-preparation, redis, mysql, kafka, elasticsearch, microservices, knowledge-base, gitbook, linux, web-server

## Member repositories
- Jstarfish/JavaKeeper (main) score 53

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:13.073107+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 2026-08-30T02:55:26.999254+00:00, confidence not recorded.
  - readme: https://github.com/Jstarfish/JavaKeeper (fetched 2026-08-28T04:06:13.073107+00:00, sha cde262a63353)
  - homepage: https://javakeeper.starfish.ink/ (fetched 2026-08-29T10:35:20.390345+00:00, sha 47a2b18b9856)
- Data as of 2026-08-30T08:39:29.467469+00:00.