Maintained by a like‑minded team, covering both operations and development. Topics span Linux ops, DevOps toolchain, Kubernetes containerization, monitoring, log collection, network security, and Python or Go development. Team members: Qiao Ke, wanger, Dong Ge, Su Xin, Hua Zai, Zheng Ge, Teacher Xia.
This article explains what a thread pool is—a collection of pre‑instantiated idle threads that execute tasks efficiently—and outlines the essential steps to implement one, including thread creation, container management, and task interface design.
This article explains why keeping the client source IP in an Istio service mesh matters, outlines the reasons for IP loss, and provides step‑by‑step solutions for north‑south and east‑west traffic using Service settings, traffic policies, and Envoy headers.
This guide compiles a comprehensive set of kubectl and Docker commands for retrieving logs, sorting pods, managing secrets, cleaning resources, debugging, port forwarding, and performing cluster maintenance tasks, helping administrators streamline Kubernetes operations and troubleshoot issues effectively.
This article provides a comprehensive guide to Meshery, an open‑source cloud‑native management platform, covering its architecture, deployment options, service‑mesh management, performance testing, and MeshMap visual collaboration features for Kubernetes environments.
This article explains Ceph RBD QoS concepts, describes a full testing environment and workflow, shows command‑line configurations and fio benchmarks, and summarizes the findings that image‑level QoS limits are effective while pool‑level limits are not.
At KubeCon China 2023, experts Liu Kai and Dong Shandong presented a three‑part deep dive into Kubernetes observability challenges, demonstrating how eBPF enables comprehensive data collection across all stack layers, seamless integration, and intelligent root‑cause analysis through dimension attribution, anomaly bounding, and fault‑tree methods.
This article explains the G1 garbage collector’s heap layout, collection cycles, pause prediction, log analysis, and monitoring tools, helping Java developers diagnose and resolve performance issues such as frequent restarts, OOM, CPU spikes, and periodic latency spikes.
This guide explains how to retrieve the true client IP in environments with multiple proxy layers by understanding remote_addr, X-Forwarded-For, and X-Real-IP headers, and configuring HAProxy and Nginx Ingress with appropriate options to forward and preserve the original IP.
This guide demonstrates essential Java Stream API techniques—including grouping collections into maps, extracting first entries, performing reductions to find max or min, converting streams to lists, sorting, removing duplicates, and a comprehensive list of frequently used stream operations—providing practical code examples for Java 11 and 17.
This guide explains why frequent garbage collection and heap memory overflow occur in Java applications, demonstrates how to reproduce the issue with a sample program, and walks through various techniques—including jmap histograms, heap dumps, VisualVM analysis, and remote JMX monitoring—to diagnose and resolve out‑of‑memory errors.
