Posts on Clarence | Backend, AI, DevOps, Infrastructure

How I Work: Backend, AI, DevOps, and Infrastructure

Wed, 08 Jul 2026 00:30:00 +0800

I do not treat Backend, AI, DevOps, Infrastructure, and Network as isolated areas. For a product that has to go online, be used, and remain maintainable, these layers eventually become one delivery chain.

Features need stable APIs. Services need reliable CI/CD. Long-running systems need monitoring, backup, network visibility, and security. When a product needs LLMs, Speech AI, or GPU runtime, model integration also has to be deployable, observable, and operable.

GitLab CI/CD Configuration Guide

Tue, 30 Jan 2024 15:00:00 +0800

In enterprise DevOps work, I build and maintain GitLab CI/CD workflows from code submission to production deployment. This article summarizes the practical configuration patterns I use most often.

Reviewed July 11, 2026: The examples now use GitLab Runner authentication tokens, Node.js 24 LTS, and Docker 29.6.1. Version and security defaults continue to change; check the current GitLab Runner registration documentation, Node.js release status, and Docker Engine release notes before production use, then pin images to a version or digest your team has tested.

High-traffic Web Hosting Operations

Sat, 21 Jan 2023 02:00:00 +0800

I have operated a high-traffic hosting environment that hosted more than 4,000 websites. This kind of work is not just about running a web server. It requires capacity planning, monitoring, updates, security, DNS / CDN operations, incident response, and day-to-day maintenance discipline.

At this scale, standardization matters. Every update, certificate change, configuration adjustment, and alert cannot depend only on human memory.

Cloudflare 30-day Metrics

The following chart shows one month of traffic: