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Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3517 posts
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The Definitive 2025 Developer Study Guide: Tech Stack Roadmaps, Free Resources, and Interview Prep for Every Position
A comprehensive, data-driven study guide covering every tech stack in modern JDs — from algorithms and system design to AI/ML, DevOps, and data engineering. Includes curated free/paid resources, certification prep, and p
2026-03-21 · 38 min read #study-guide#career#learning-resources#coding-test#system-designToss Bank ML Backend Engineer Study Guide: Server Architecture, ML Serving, and Career Roadmap
Complete analysis of Toss Bank ML Service Team JD. Server architecture design, large-scale traffic handling, AI model serving on K8s, MSA distributed tracing — with a 6-month study roadmap and interview preparation.
2026-03-21 · 34 min read #ml-engineering#backend#tossbank#kubernetes#python2025-2026 IT Job Market Deep Dive: Tech Stacks, Salaries, and Interview Strategies from FAANG to Korean Big Tech
A data-driven analysis of the 2025-2026 IT hiring landscape — from FAANG and AI-native startups to Korean tech giants like Naver, Kakao, Coupang, and Toss. Covers in-demand tech stacks, salary benchmarks, certifications,
2026-03-21 · 27 min read #career#job-market#tech-stack#interview#salary2025 AI Research Trends: Top HuggingFace Papers and 10 Defining Research Directions
A developer-focused review of HuggingFace trending papers and the 10 defining AI research trends of 2025. DeepSeek-R1 pure RL reasoning, Nemotron-Cascade 30B/3B MoE, GRPO, PagedAttention, million-token context limitation
2026-03-21 · 15 min read #ai-research#papers#huggingface#reasoning#moeMarch 2025 Tech·AI·K-POP Weekly Digest: From GTC to BTS Comeback
A comprehensive roundup of March 2025 highlights: NVIDIA GTC Blackwell Ultra announcement, Gemini 2.5 Pro topping benchmarks, MCP becoming the industry standard, DeepSeek-R1 open-source shock, BTS full-group comeback aft
2026-03-21 · 12 min read #culture#ai#kpop#nvidia#gtcToss Bank Data Engineer (Kafka & Streaming) Study Guide: Tech Stack, Interview Prep, and 6-Month Roadmap
Complete analysis of Toss Bank Real-Time Data team JD. Master Kafka Broker operations, Spring Boot Kafka Client, Active-Active replication, CDC with Debezium, Flink stream processing, and ClickHouse analytics — with a 6-
2026-03-21 · 29 min read #kafka#data-engineering#tossbank#streaming#flinkAI Supercomputer at Home: Study LLMs on NVIDIA DGX Spark and Create Content with ComfyUI
Run 200B-parameter LLMs locally on NVIDIA DGX Spark ($3,999) and generate FLUX/SDXL images with ComfyUI. Complete guide with specs, benchmarks, setup instructions, and cost analysis — the era of personal AI supercomputer
2026-03-21 · 37 min read #nvidia#dgx-spark#comfyui#local-ai#llm[Virtualization] 08. KubeVirt + GPU: Leveraging GPU Acceleration in VMs
Learn how to use GPU passthrough and vGPU with KubeVirt VMs. Covers GPU Operator integration, VFIO setup, Sandbox Device Plugin, and guest OS driver installation.
2026-03-20 · 9 min read #virtualization#kubernetes#gpu[Virtualization] 05. AWS EC2 and Nitro System: The Evolution of Cloud Virtualization
AWS Nitro System architecture, GPU instance types (P/G series), EFA networking, Nitro Enclaves, and the cutting edge of cloud virtualization.
2026-03-20 · 9 min read #virtualization#infrastructure#cloud[Virtualization] 02. QEMU and KVM: The Heart of Open-Source Virtualization
Deep dive into QEMU emulation architecture and KVM integration, the TCG engine, VirtIO devices, GPU passthrough, and the foundations of open-source virtualization.
2026-03-20 · 8 min read #virtualization#infrastructure#cloud[Prometheus] PromQL Engine Internals: From Parser to Execution Engine
Source code level analysis of the PromQL engine internals. Covers the lexer, parser, AST structure, query evaluation engine for instant and range queries, step evaluation, lookback delta, subquery implementation, and mem
2026-03-20 · 9 min read #prometheus#observability#open-source-internalsKyverno Production Operations: HA, Monitoring, Troubleshooting
Production operations guide for Kyverno. Covers HA deployment (replicas, failurePolicy), PolicyReport/ClusterPolicyReport CRDs, Prometheus metrics and Grafana dashboards, background scanning, PolicyException mechanism, a
2026-03-20 · 2 min read #kyverno#policy#security#open-source-internalsKyverno Architecture Internals: Kubernetes-Native Policy Engine
Deep dive into Kyverno architecture internals. Covers its design as a Kubernetes-native policy engine, Admission Controller/Background Controller/Reports Controller architecture, webhook configuration, ClusterPolicy vs P
2026-03-20 · 2 min read #kyverno#policy#security#open-source-internals[Virtualization] 10. The Future of Virtualization: From Confidential Computing to GPU Disaggregation
A comprehensive look at the future of virtualization technology, covering confidential computing, ARM virtualization, GPU disaggregation, WebAssembly, Kata Containers, and unikernels.
2026-03-20 · 11 min read #virtualization#kubernetes#gpu[Virtualization] 07. NVIDIA GPU Operator: Automating GPU Management on Kubernetes
A detailed guide on using NVIDIA GPU Operator to automatically manage GPU drivers, runtime, device plugins, and monitoring on Kubernetes.
2026-03-20 · 8 min read #virtualization#kubernetes#gpu[Virtualization] 04. Complete Guide to GPU Virtualization: Passthrough, vGPU, MIG, SR-IOV
Comprehensive comparison of GPU Passthrough, vGPU (NVIDIA GRID), MIG, SR-IOV, and Kubernetes time-slicing for GPU virtualization.
2026-03-20 · 9 min read #virtualization#infrastructure#cloud[Virtualization] 01. Virtualization Fundamentals: Type 1 vs Type 2 Hypervisors
Core virtualization concepts, differences between Type 1 and Type 2 hypervisors, and a comparison of full virtualization, paravirtualization, and hardware-assisted virtualization.
2026-03-20 · 8 min read #virtualization#infrastructure#cloud[Prometheus] TSDB Internals: WAL, Chunks, Blocks, Compaction
Source code level analysis of Prometheus TSDB internals. Deep dive into WAL segment structure, Head Block memSeries, chunk encoding (XOR, delta-of-delta), block structure, compaction algorithms, and posting list indexing
2026-03-20 · 10 min read #prometheus#observability#open-source-internals[Prometheus] Architecture Internals: Source Code Level Deep Dive
A source code level analysis of Prometheus server internals. Deep dive into the Scrape Manager, TSDB, Rule Manager, Notifier, Web UI components, their goroutine models, lifecycle management, and configuration reload mech
2026-03-20 · 8 min read #prometheus#observability#open-source-internalsKyverno vs OPA/Gatekeeper: Policy Engine Comparison
Compare Kyverno and OPA/Gatekeeper from architecture, policy language, features, performance, and ecosystem perspectives. Covers YAML/CEL vs Rego, mutation/generation support, image verification, webhook latency, memory
2026-03-20 · 2 min read #kyverno#policy#security#open-source-internals