Backend team lead & architect with 10+ years experience, full‑stack engineer, sharing insights and solo development practice.
This article analyzes common data‑inconsistency problems in order‑placement workflows that involve many external services and presents a lightweight final‑consistency architecture with practical design guidelines, retry strategies, and compensation mechanisms to ensure reliable backend processing.
This article explains the key changes in Spring Boot 3, outlines the new OAuth2 components, and provides a detailed design for secure microservice authentication and authorization using Spring Authorization Server, JWT, API Gateway, and client applications, complete with architecture diagrams and implementation steps.
This article breaks down complex B2B e‑commerce permission scenarios—including multi‑client authentication, role‑based and identity‑based authorization, and a conceptual model—providing clear design points and practical implementation guidance for secure, scalable systems.
This article provides a comprehensive walkthrough of Single Sign‑On (SSO) concepts, common protocols, login flow diagrams, and multiple implementation options, then dives into step‑by‑step deployment of an enterprise‑grade SSO system using Keycloak with Docker or Kubernetes, including configuration, client setup, custom extensions, and practical code snippets.
This article explains the 4A enterprise architecture model, compares it with TOGAF and Huawei’s “One Body Four Faces” framework, outlines the four architectural layers, and shows how Domain‑Driven Design can be mapped onto each layer with concrete examples and diagrams.
This article introduces Dify, an open‑source LLM application platform, outlines its core features such as workflows, model support, RAG pipelines, agents, and observability, compares it with alternatives, and provides step‑by‑step deployment instructions using Docker Compose and Helm for local and Kubernetes environments.
This article outlines a conceptual model for complex payment and refund scenarios, detailing payment methods, channels, platforms, various payment types, refund options, and key design considerations such as multiple payment details, merged payments, distributed locks, and state consistency.
This article walks through installing LM Studio on a Windows PC, downloading models from Hugging Face, using the AI Chat interface (including a Codellama‑generated Snake game), measuring resource usage, exploring the built‑in OpenAI‑compatible API, and summarizing its strengths and limitations.
After experiencing up to 50% battery loss overnight when the MacBook lid is closed, the author diagnosed the issue using pmset, identified Bluetooth and Handoff as culprits, and applied three configuration changes—including disabling network wake, turning off Handoff, and using Bluesnooze—to reduce nightly drain to under 5%.
This guide walks you through setting up Spring AI, configuring model providers and vector stores, initializing a Spring Boot project, adding OpenAI credentials, and running a complete RAG (Retrieval‑Augmented Generation) demo with code snippets and sample API calls.
