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Xiao Liu Lab

An operations lab passionate about server tinkering 🔬 Sharing automation scripts, high-availability architecture, alert optimization, and incident reviews. Using technology to reduce overtime and experience to avoid major pitfalls. Follow me for easier, more reliable operations!

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Latest from Xiao Liu Lab

82 recent articles

Xiao Liu Lab

Dec 30, 2025 · Information Security

Why Our New SSL Certificate Caused Handshake Errors and How We Fixed It

After updating a core API's SSL certificate, a partner reported repeated SSLHandshakeException errors, mistakenly labeling the cert as a development version; thorough verification revealed the issue stemmed from an outdated Java trust store lacking the new Sectigo root, leading to a set of concrete remediation steps and best‑practice lessons.

APICertificateJava

0 likes · 15 min read

Why Our New SSL Certificate Caused Handshake Errors and How We Fixed It

Xiao Liu Lab

Dec 28, 2025 · Operations

When to Use Async vs Multithreading: A Practical Guide for Ops Teams

This article explains the fundamental differences between asynchronous programming and multithreading, illustrates each with real‑world operations scenarios, outlines their key advantages and pitfalls, compares them in a concise table, and provides step‑by‑step guidance for communication, deployment, and troubleshooting.

AsynchronousConcurrencyPerformance

0 likes · 12 min read

When to Use Async vs Multithreading: A Practical Guide for Ops Teams

Xiao Liu Lab

Dec 26, 2025 · Cloud Computing

Layer 4 vs Layer 7 Load Balancing: Choosing the Right Alibaba or Tencent Cloud Service

This guide explains the fundamental differences between Layer 4 (transport‑level) and Layer 7 (application‑level) load balancers, compares Alibaba Cloud and Tencent Cloud offerings across performance, features, and pricing, and provides practical selection tips and common pitfalls to avoid.

Alibaba CloudLayer 4Layer 7

0 likes · 9 min read

Layer 4 vs Layer 7 Load Balancing: Choosing the Right Alibaba or Tencent Cloud Service

Xiao Liu Lab

Dec 26, 2025 · Operations

How to Achieve RabbitMQ High Availability with HAProxy: A Step‑by‑Step Guide

This tutorial explains why HAProxy is essential for RabbitMQ clusters, walks through installing HAProxy on Ubuntu, configuring load‑balancing and health‑check parameters, integrating with Java applications, and validating automatic failover to ensure high availability and efficient resource utilization.

HAProxyJavaLinux

0 likes · 8 min read

How to Achieve RabbitMQ High Availability with HAProxy: A Step‑by‑Step Guide

Xiao Liu Lab

Dec 24, 2025 · Operations

How to Build a Full‑Featured Zabbix Monitoring Platform with Docker Compose

This step‑by‑step guide shows how to choose Zabbix over other monitoring tools, deploy a complete Zabbix stack with Docker Compose, configure agents on Linux and Windows, set up auto‑discovery, alerts (email, WeChat, escalation), use proxies for distributed monitoring, and optimize performance for enterprise environments.

AutomationDocker ComposeMonitoring

0 likes · 27 min read

How to Build a Full‑Featured Zabbix Monitoring Platform with Docker Compose

Xiao Liu Lab

Dec 23, 2025 · Databases

Mastering Redis Master‑Slave Replication: Core Concepts, Workflow, and Configuration

This article explains how Redis master‑slave replication provides hot backup, read‑write separation, high availability, and horizontal scaling by detailing its three‑stage workflow, full and partial synchronization mechanisms, key configuration options, and practical analogies for clear understanding.

Data SynchronizationRedisReplication

0 likes · 11 min read

Mastering Redis Master‑Slave Replication: Core Concepts, Workflow, and Configuration

Xiao Liu Lab

Dec 23, 2025 · Operations

Master Incident Response: Diagnose and Recover Service Outages in 15 Minutes

When a service crashes and users flood you with complaints, following a structured 15‑minute workflow—first narrowing the impact, then probing six layers (network, system, application, data, external services, security), and finally documenting the incident—lets you pinpoint and fix most outages quickly and reliably.

System monitoringTroubleshootingnetwork debugging

0 likes · 10 min read

Master Incident Response: Diagnose and Recover Service Outages in 15 Minutes

Xiao Liu Lab

Dec 21, 2025 · Databases

Master MySQL for Ops: DML/DQL Tricks, Permissions & Transaction Pitfalls

This guide equips MySQL ops engineers with practical DML/DQL commands, permission management, transaction handling, and common pitfalls, offering step‑by‑step examples, performance tips and safety checklists to ensure reliable database maintenance and troubleshooting.

Database OperationsMySQLPermissions

0 likes · 27 min read

Master MySQL for Ops: DML/DQL Tricks, Permissions & Transaction Pitfalls

Xiao Liu Lab

Dec 18, 2025 · Operations

scp vs rsync: Choose the Right Tool for Fast, Efficient File Transfers

This guide explains the fundamental differences between scp and rsync, outlines their mechanisms, advantages, and drawbacks, provides practical command examples for various scenarios, highlights common pitfalls, and offers a concise comparison table to help operations engineers select the appropriate tool for secure and efficient file transfers.

Linuxfile transferoperations

0 likes · 10 min read

scp vs rsync: Choose the Right Tool for Fast, Efficient File Transfers

Xiao Liu Lab

Dec 17, 2025 · Cloud Native

Deploy SpringBoot JAR and Legacy WAR with Docker + Nginx in 5 Minutes

This guide shows how to containerize Java SpringBoot JAR or traditional WAR projects with Docker and Nginx, providing a unified, reproducible deployment pipeline that eliminates environment conflicts, simplifies port management, and enables seamless development‑to‑production transitions.

DockerDocker ComposeJava

0 likes · 13 min read

Deploy SpringBoot JAR and Legacy WAR with Docker + Nginx in 5 Minutes