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Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3517 posts
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Accelerating LLM Inference 2-3x with Speculative Decoding: From Theory to Production
A deep dive into the mathematical foundations of Speculative Decoding, the Draft-Verify pipeline, acceptance probability analysis, practical implementation in vLLM/TensorRT-LLM, and Apple's Mirror Speculative Decoding.
2026-03-02 · 8 min read #llm#speculative-decoding#inference#optimization#vllmMastering Japanese Conversations at the Hospital
Learn 5 essential expressions for visiting a hospital in Japan, along with practical conversations, grammar points, and audio practice.
2026-03-02 · 8 min read #japanese#jlpt#japanese-conversation#hospital-japanese#japan-careerMastering Keigo (Honorific Japanese) at Japanese IT Companies — Practical Expressions for Email, Meetings, and Slack
A comprehensive guide to keigo (honorific) expressions used daily at Japanese IT companies, organized by email, meeting, and Slack scenarios. Learn the differences between sonkeigo, kenjougo, and teineigo along with prac
2026-03-02 · 15 min read #japanese#keigo#business-japanese#it-company#careerKubernetes RBAC Complete Guide: Hands-On Practice for Golden Kubestronaut Exam Prep
From core concepts to real-world scenarios of Kubernetes RBAC (Role-Based Access Control). A hands-on guide covering least privilege implementation with Role, ClusterRole, RoleBinding, and ServiceAccount, plus Golden Kub
2026-03-02 · 8 min read #kubernetes#rbac#security#kubestronaut#ckaetcd Backup & Restore Complete Guide — CKA Exam Essential Hands-on
A complete guide to backing up and restoring etcd — the brain of a Kubernetes cluster — with practical commands. A must-know topic for the CKA exam and an essential skill for production operations.
2026-03-02 · 7 min read #kubernetes#etcd#cka#backup#restoreKubernetes Gateway API Hands-On Migration — From Ingress to Gateway
A practical guide to migrating from Kubernetes Ingress to Gateway API. Covers concepts of GatewayClass, Gateway, and HTTPRoute, leveraging the ingress2gateway tool, and gradual transition strategies — all with code examp
2026-03-02 · 6 min read #kubernetes#gateway-api#ingress#networking#migrationComplete Guide to Japanese IT Company Interviews: Keigo, Technical Expressions, and Mock Interviews for Engineers
A comprehensive Japanese guide specialized for IT company interviews in Japan. Covers self-introduction, technical explanations, keigo usage, common questions with model answers, and common mistakes Korean engineers make
2026-03-02 · 15 min read #japanese#it-interview#keigo#tech-career#jlptEvening English Mini — Job Interviews & Career Growth
Key expressions and practical dialogue for salary negotiation and interviews — negotiate a raise, leverage your experience, compensation package
2026-03-02 · 3 min read #english#job-interview#career#salary-negotiation#evening-englishEnglish for IT Job Seekers: The Complete Tech Resume & Cover Letter Writing Guide
A complete guide to writing English resumes and cover letters for overseas IT jobs. Covers ATS optimization strategies, action verbs, the STAR method, and practical templates.
2026-03-02 · 7 min read #english#resume#cover-letter#job-interview#tech-careerGitHub Actions Advanced CI/CD — Matrix, Cache, Self-hosted Runner
Master advanced GitHub Actions features with practical examples. Parallel builds with Matrix Strategy, build speed optimization with Cache, and cost reduction with custom environments using Self-hosted Runners.
2026-03-02 · 7 min read #github-actions#ci-cd#devops#automation#self-hosted-runnerPractical Guide to English Tech Presentations — Slide Narration, Q&A Handling, and Demo Expressions
A situational compilation of frequently used English expressions in tech presentations. Covers opening, slide transitions, live demos, and Q&A handling with practical expressions and examples you can use right away.
2026-03-02 · 10 min read #english#presentation#technical-english#public-speaking#careerPostgreSQL + pgvector Vector Search Practical Guide: From RAG to Hybrid Search
Implement vector similarity search with the PostgreSQL pgvector extension. Covers installation through HNSW/IVFFlat indexes, hybrid search (vector + full-text search), and RAG pipeline integration with practical code.
2026-03-02 · 9 min read #postgresql#pgvector#vector-search#embedding#ragGrafana + Loki + Promtail Log Pipeline Setup Guide
A hands-on guide to building a lightweight log collection, storage, and visualization pipeline with Grafana, Loki, and Promtail using Docker Compose, including label-based queries and alerting configuration
2026-03-02 · 9 min read #grafana#loki#promtail#observability#loggingArgoCD ApplicationSet and Progressive Rollout: A Practical Guide to GitOps Multi-Cluster Deployment
This post is the multi-cluster operations companion in the GitOps series. It focuses on ApplicationSet, generator design, Progressive Sync, and environment fan-out patterns so staged rollout remains manageable as cluster
2026-03-02 · 7 min read #argocd#gitops#applicationset#progressive-rollout#kubernetesPostgreSQL Performance Tuning Practical Guide — Query Optimization, Index Strategy, EXPLAIN Analysis
A hands-on guide to the core of PostgreSQL performance tuning. Covers how to read EXPLAIN output, index strategies, query optimization patterns, and configuration tuning with practical code examples you can apply immedia
2026-03-02 · 11 min read #database#postgresql#performance#sql#indexingTelegram Bot + Webhook Practical Guide: From Building a Bot with Python to Kubernetes Deployment
A complete guide to chatbot development using Telegram Bot API and Webhooks. Build a bot with python-telegram-bot and FastAPI, compare Polling vs Webhook, implement inline keyboards and command handlers, and deploy to Ku
2026-03-02 · 7 min read #telegram#bot#webhook#python#chatbotBuilding a RAG Chatbot — Create Your Own Document QA Bot with LangChain + ChromaDB + OpenAI
A hands-on guide to building a PDF document-based RAG chatbot from scratch using LangChain, ChromaDB, and OpenAI. Covers document loading, vector storage, prompt design, and a Streamlit UI.
2026-03-02 · 9 min read #rag#langchain#chromadb#openai#chatbotEvent-Driven Architecture + CQRS + Saga Pattern: A Practical MSA Design Guide
A practical design guide combining Event-Driven Architecture, CQRS (Command Query Responsibility Segregation), and the Saga pattern in an MSA environment. Includes Kafka-based implementation code, Mermaid diagrams, and a
2026-03-02 · 8 min read #architecture#event-driven#cqrs#saga-pattern#microservicesEvent-Driven Architecture Design Patterns — Kafka, CQRS, Event Sourcing Practical Guide
A hands-on guide to core Event-Driven Architecture patterns. Covers the concepts and implementation of Kafka-based messaging, CQRS, and Event Sourcing with code examples and Mermaid diagrams.
2026-03-02 · 12 min read #architecture#event-driven#kafka#cqrs#event-sourcingAI Prompt Engineering Complete Guide — Information Retrieval, Image/Video Generation, and Debugging (KR/EN/JA)
Prompt techniques for getting great results from AI, organized by use case: information retrieval, image/video generation, and debugging. Includes practical expressions in three languages — Korean, English, and Japanese.
2026-03-02 · 17 min read #ai#prompt-engineering#multilingual#image-generation#debugging