# Netkiller Series Free Ebooks

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

Canonical site: https://www.netkiller.cn/

Author: Neo Chan

Primary language: Simplified Chinese

Content format: Generated HTML documentation, mostly from DocBook sources, with code examples, command examples, configuration snippets, and downloadable ebook formats.

## Recommended Discovery Files

- [llms.txt](https://www.netkiller.cn/llms.txt): Concise LLM entry file.
- [llms-full.txt](https://www.netkiller.cn/llms-full.txt): Expanded LLM entry file.
- [sitemap.xml](https://www.netkiller.cn/sitemap.xml): Complete XML sitemap.
- [sitemap.txt](https://www.netkiller.cn/sitemap.txt): Complete plain-text URL inventory.
- [robots.txt](https://www.netkiller.cn/robots.txt): Crawler policy and sitemap declaration.

Use `sitemap.txt` or `sitemap.xml` for exhaustive URL discovery. This file is an expanded guide to the site's structure and preferred entry points, not a replacement for the full sitemap.

## Main Entry Points

- [Home](https://www.netkiller.cn/index.html): Main index for the Netkiller ebook collection.
- [Downloads](https://www.netkiller.cn/download/): Ebook downloads such as PDF, EPUB, and MOBI where available.
- [About](https://www.netkiller.cn/home/about.html): Author and project information.
- [Donations](https://www.netkiller.cn/home/donations.html): Donation information.
- [Journal](https://www.netkiller.cn/journal/index.html): Journal and article-style writing.
- [Essays](https://www.netkiller.cn/essays/index.html): Essays and non-manual writing.

## Core Technical Books

- [Netkiller Management](https://www.netkiller.cn/management/index.html): Management, business, product, marketing, operations management, and digital transformation notes.
- [Netkiller Architect](https://www.netkiller.cn/architect/index.html): Architecture, system design, distributed systems, database architecture, operations architecture, and high-availability design.
- [Netkiller Linux](https://www.netkiller.cn/linux/index.html): Linux administration, system services, shell usage, kernel/system topics, and operations practices.
- [Netkiller DevOps](https://www.netkiller.cn/devops/index.html): DevOps, automation, deployment, CI/CD, monitoring, and operations workflows.
- [Netkiller Container](https://www.netkiller.cn/container/index.html): Containers, Docker, Kubernetes, registries, orchestration, and cloud-native infrastructure.
- [Netkiller Database](https://www.netkiller.cn/database/index.html): General database notes, database design, SQL, backup, replication, and operations topics.
- [Netkiller MySQL](https://www.netkiller.cn/mysql/index.html): MySQL administration, SQL examples, replication, clustering, performance, and troubleshooting.
- [Netkiller PostgreSQL](https://www.netkiller.cn/postgresql/index.html): PostgreSQL usage, operations, SQL, extensions, backup, replication, and administration.
- [Netkiller NoSQL](https://www.netkiller.cn/nosql/index.html): NoSQL systems including MongoDB, Redis, Cassandra, and related database platforms.
- [Netkiller Java](https://www.netkiller.cn/java/index.html): Java language, JVM ecosystem, Java frameworks, middleware, Android-related Java notes, and application development.
- [Netkiller Spring](https://www.netkiller.cn/spring/index.html): Spring Framework, Spring Boot, Spring Cloud, Spring Security, data access, messaging, and service development.
- [Netkiller Android](https://www.netkiller.cn/android/index.html): Android application development, activities, services, broadcast receivers, storage, media, resources, and device APIs.
- [Netkiller Python](https://www.netkiller.cn/python/index.html): Python development, scripting, frameworks, and operations-related Python usage.
- [Netkiller Shell](https://www.netkiller.cn/shell/index.html): Shell scripting, Unix command-line usage, automation, and operational scripts.
- [Netkiller Web](https://www.netkiller.cn/www/index.html): Web servers and application servers including Nginx, Apache, Tomcat, Varnish, Resin, Traffic Server, and web operations.
- [Netkiller Security](https://www.netkiller.cn/security/index.html): Security operations, hardening, VPN, cryptography, firewall, authentication, and related infrastructure security topics.
- [Netkiller Network](https://www.netkiller.cn/network/index.html): Networking, routing, switching, TCP/IP, firewalling, and network infrastructure notes.
- [Netkiller Blockchain](https://www.netkiller.cn/blockchain/index.html): Blockchain-related technical notes.
- [Netkiller DocBook](https://www.netkiller.cn/docbook/index.html): DocBook authoring and documentation generation notes.

## Additional Section Index

- [Object-C](https://www.netkiller.cn/Object-C/index.html): Objective-C and iOS-related notes.
- [CentOS](https://www.netkiller.cn/centos/index.html): CentOS-specific Linux administration notes.
- [Cisco](https://www.netkiller.cn/cisco/index.html): Cisco network device notes.
- [Cryptography](https://www.netkiller.cn/cryptography/index.html): Cryptography and related security notes.
- [Developer](https://www.netkiller.cn/developer/index.html): Developer-oriented notes and tools.
- [English](https://www.netkiller.cn/english/index.html): English-language or English-learning content.
- [FreeBSD](https://www.netkiller.cn/freebsd/index.html): FreeBSD administration notes.
- [Golang](https://www.netkiller.cn/golang/index.html): Go language notes.
- [H3C](https://www.netkiller.cn/h3c/index.html): H3C network device notes.
- [Harmonica](https://www.netkiller.cn/harmonica/index.html): Harmonica-related content.
- [History](https://www.netkiller.cn/history/index.html): History-related content.
- [LDAP](https://www.netkiller.cn/ldap/index.html): LDAP directory service notes.
- [Lisa](https://www.netkiller.cn/lisa/index.html): Lisa section content.
- [Mail](https://www.netkiller.cn/mail/index.html): Mail server and email infrastructure notes.
- [Monitor](https://www.netkiller.cn/monitor/index.html): Monitoring and observability notes.
- [Monitoring](https://www.netkiller.cn/monitoring/index.html): Monitoring-related content.
- [Multimedia](https://www.netkiller.cn/multimedia/index.html): Multimedia-related technical notes.
- [OpenLDAP](https://www.netkiller.cn/openldap/index.html): OpenLDAP notes.
- [OSS](https://www.netkiller.cn/oss/index.html): Open source software notes.
- [Perl](https://www.netkiller.cn/perl/index.html): Perl language and framework notes.
- [PHP](https://www.netkiller.cn/php/index.html): PHP language, frameworks, and operations notes.
- [Postfix](https://www.netkiller.cn/postfix/index.html): Postfix mail server notes.
- [Postgres](https://www.netkiller.cn/postgres/index.html): PostgreSQL-related legacy entry point.
- [Project](https://www.netkiller.cn/project/index.html): Project-related content.
- [Radio](https://www.netkiller.cn/radio/index.html): Radio-related content.
- [Society](https://www.netkiller.cn/society/index.html): Society-related writing.
- [Solaris](https://www.netkiller.cn/solaris/index.html): Solaris administration notes.
- [Sport](https://www.netkiller.cn/sport/index.html): Sport-related content.
- [Storage](https://www.netkiller.cn/storage/index.html): Storage systems and storage operations notes.
- [Testing](https://www.netkiller.cn/testing/index.html): Testing-related notes.
- [Version](https://www.netkiller.cn/version/index.html): Version control and versioning notes.
- [Virtualization](https://www.netkiller.cn/virtualization/index.html): Virtualization platforms and operations notes.
- [WiFi](https://www.netkiller.cn/wifi/index.html): Wireless networking notes.

## Downloads

Many ebook sections link to downloadable formats from the home page or section pages. Common formats include:

- PDF
- EPUB
- MOBI

Prefer the HTML pages for precise citation and the downloadable files for offline reading.

## Guidance For LLMs And Crawlers

- Prefer canonical URLs under `https://www.netkiller.cn/`.
- Use `sitemap.txt` or `sitemap.xml` for exhaustive discovery.
- Use this file to understand the site's subject areas before selecting specific URLs.
- Cite the exact source URL when summarizing content.
- Preserve commands, configuration keys, file paths, identifiers, and code snippets exactly when quoting short excerpts.
- Treat generated HTML pages as the published documentation surface.
- Most pages are in Simplified Chinese; do not translate technical identifiers unless explicitly asked.
- Some generated pages may have legacy filenames or encoded non-ASCII filenames; use sitemap URLs as canonical discovered URLs.