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.
A detailed post‑mortem explains how a sudden traffic surge, insufficient pod count, and a custom thread‑pool bottleneck caused Tomcat thread‑pool saturation, health‑check failures, and a zone‑wide outage, and offers concrete lessons on capacity planning, monitoring, and safe coding practices.
This article explains the fundamentals of Prometheus Histogram metrics, covering data format, metric types, how histograms work as cumulative time series, provides Go code examples for collection, and demonstrates practical queries for rate, bucket analysis, and quantile calculations to monitor service performance.
This guide introduces Terraform, an open-source IaC tool, covering its core concepts, key features, installation steps, command hierarchy, and execution workflow, enabling readers to confidently automate and manage cloud and on-premise infrastructure using declarative configurations.
This article introduces nerdctl, a Docker‑compatible CLI built on containerd, outlines its key features, installation methods, and essential commands—including image building and Docker Compose support—providing developers and sysadmins a lightweight alternative for advanced container management.
3FS is an open‑source distributed file system that abstracts multiple machines into a single namespace, offering massive scalability, fault tolerance, and high throughput through components like Meta, Mgmtd, Storage, and Client, and leveraging the CRAQ protocol for strong consistency and efficient reads and writes.
In May 2024, Dior Shanghai faced an administrative investigation for illegally transferring user data abroad, failing to obtain explicit consent, and neglecting encryption, highlighting critical compliance gaps under China’s Personal Information Protection Law and prompting a strong security reminder for data handlers.
This guide introduces six modern command-line utilities—exa, bat, zoxide, fd, nmon, and ncdu—that serve as powerful, Rust-based replacements for traditional Unix commands, offering enhanced visuals, smarter navigation, faster searching, and real-time system monitoring to streamline everyday terminal workflows.
This guide introduces Zabbix's monitoring architecture, key features, step‑by‑step installation on Debian/Ubuntu, configuration of server, database, and agents, plus essential troubleshooting commands for a reliable monitoring setup.
This guide compiles a comprehensive set of Linux commands and Java diagnostic utilities—including tail, grep, awk, find, tsar, btrace, Greys, jps, jstack, jmap, and more—providing practical examples and code snippets to help engineers quickly troubleshoot and monitor system and JVM issues.
At the 27th GOPS Global Operations Conference in Shanghai (Oct 17‑18, 2025), Professor Wang Peng of Fudan University will reveal how large language models can extract and structure heterogeneous operational data into high‑quality knowledge bases, and how RAG‑driven Q&A enhances fault diagnosis, SOP generation, and automated decision‑making.
