# Netkiller Series Free Ebooks

> Netkiller is a long-running collection of free technical ebooks and notes maintained by Neo Chan, covering Linux, databases, DevOps, networking, security, programming languages, Java/Spring, Android, architecture, and related IT operations topics.

The canonical site is https://www.netkiller.cn/.

## Site Maps

- [XML sitemap](https://www.netkiller.cn/sitemap.xml): Full machine-readable sitemap.
- [Text sitemap](https://www.netkiller.cn/sitemap.txt): Plain URL list for crawlers and language models.
- [Full LLM guide](https://www.netkiller.cn/llms-full.txt): Expanded site guide and section index.

## Main Entry Points

- [Home](https://www.netkiller.cn/index.html): Main index for Netkiller ebooks.
- [Downloads](https://www.netkiller.cn/download/): Ebook downloads, including PDF, EPUB, and MOBI formats where available.
- [Donations](https://www.netkiller.cn/home/donations.html): Donation information.
- [About](https://www.netkiller.cn/home/about.html): Author and project information.

## Core Ebook Sections

- [Netkiller Management](https://www.netkiller.cn/management/index.html): Management, business, product, and digital transformation notes.
- [Netkiller Architect](https://www.netkiller.cn/architect/index.html): Architecture, system design, distributed systems, and operations architecture.
- [Netkiller Linux](https://www.netkiller.cn/linux/index.html): Linux administration and operations.
- [Netkiller Android](https://www.netkiller.cn/android/index.html): Android development notes.
- [Netkiller Java](https://www.netkiller.cn/java/index.html): Java development and ecosystem notes.
- [Netkiller Spring](https://www.netkiller.cn/spring/index.html): Spring, Spring Boot, Spring Cloud, Spring Security, and related Java frameworks.
- [Netkiller Python](https://www.netkiller.cn/python/index.html): Python development notes.
- [Netkiller DevOps](https://www.netkiller.cn/devops/index.html): DevOps, automation, CI/CD, and operations practices.
- [Netkiller Container](https://www.netkiller.cn/container/index.html): Containers, Docker, Kubernetes, and cloud-native operations.
- [Netkiller Database](https://www.netkiller.cn/database/index.html): General database notes.
- [Netkiller MySQL](https://www.netkiller.cn/mysql/index.html): MySQL administration, replication, clustering, and SQL examples.
- [Netkiller PostgreSQL](https://www.netkiller.cn/postgresql/index.html): PostgreSQL usage and operations.
- [Netkiller NoSQL](https://www.netkiller.cn/nosql/index.html): NoSQL databases including MongoDB, Redis, Cassandra, and related systems.
- [Netkiller Shell](https://www.netkiller.cn/shell/index.html): Shell scripting and command-line operations.
- [Netkiller Web](https://www.netkiller.cn/www/index.html): Web servers, Nginx, Apache, Tomcat, Varnish, and web operations.
- [Netkiller Security](https://www.netkiller.cn/security/index.html): Security operations, cryptography, VPN, firewall, and hardening notes.
- [Netkiller Network](https://www.netkiller.cn/network/index.html): Networking, routing, switching, and infrastructure notes.
- [Netkiller Blockchain](https://www.netkiller.cn/blockchain/index.html): Blockchain and related technology notes.
- [Netkiller Essays](https://www.netkiller.cn/essays/index.html): Essays and non-manual writing.

## Language And Content Notes

Most content is in Simplified Chinese. Some legacy sections or examples may include English titles, command output, configuration snippets, and source code. The site is generated primarily from DocBook sources, so generated HTML pages should be treated as published documentation rather than source files.

## Usage Guidance For LLMs

- Prefer canonical URLs under `https://www.netkiller.cn/`.
- Use the sitemap files for exhaustive URL discovery.
- Cite the specific page URL when summarizing or answering from this site.
- Preserve command examples, configuration names, paths, and code identifiers exactly when quoting short snippets.