This public account is maintained by Xiaotianguo and friends, regularly publishing widely-read original technical articles. We focus on operations transformation and accompany you throughout your operations career, growing together happily.
This guide introduces tcpdump, a powerful network packet capture tool, explains its filtering capabilities with logical operators, and provides numerous practical examples—from capturing traffic on specific interfaces and hosts to filtering by ports, protocols, and saving captures—helping users troubleshoot network issues efficiently.
This article outlines the essential inputs and collaborative outputs needed when using large language models throughout software development—from requirement gathering and design to implementation and testing—highlighting practical steps to achieve far greater productivity than current modest gains.
This article uses everyday analogies—herbal shops, libraries, and refrigerators—to demystify databases, covering relational tables, primary/secondary keys, foreign keys, DBMS, and SQL in a clear, beginner‑friendly way.
This article outlines 30 essential DevOps competencies—from foundational infrastructure and cloud/container orchestration to automation, monitoring, security, and AI‑driven operations—detailing key technologies, real‑world scenarios, and measurable impact, helping professionals craft a standout resume in the evolving operations landscape.
This article examines how Industrial and Commercial Bank of China’s software development center tackled the complexities of financial‑grade system governance by introducing a three‑in‑one standardized version‑management framework that combines standardization, automation, and intelligence to improve delivery speed, risk control, and environment consistency.
Learn how to efficiently locate and manage large files on Linux using powerful commands such as du, find, ls, and the visual tool ncdu, with step-by-step examples, sorting techniques, and practical tips for cleaning up disk space.
This article introduces Vector, an open‑source, Rust‑based observability data pipeline that outperforms traditional tools like Logstash and Fluentd, covering its core features, concepts, installation script, minimal configuration example, and how it handles events, logs, metrics, and traces.
This article reviews the most popular log‑management solutions, summarizing each tool's core features, pricing model, advantages, and drawbacks to help readers choose the right logging stack for their observability needs.
After a midnight CPU alarm threatened service stability, I walked through rapid diagnosis with top and htop, identified JVM bottlenecks using jstat and async‑profiler, refactored a Java sorting algorithm, added caching, optimized database queries, containerized the service, and set up Prometheus‑Grafana alerts to prevent future incidents.
This comprehensive guide outlines six critical areas of modern system operations—including real‑time monitoring, security safeguards, automation, fault diagnosis, collaborative teamwork, and process optimization—offering practical strategies and tools such as Zabbix, Prometheus, ELK, Redis, Ansible, and capacity planning to ensure stable, efficient enterprise services.
