Tag: #english
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 592 posts
Database MVCC & Isolation Levels Complete Guide 2025: Read Phenomena, Snapshot Isolation, SSI, PostgreSQL/InnoDB Internals
From Dirty Read to Write Skew, from Read Committed to Serializable Snapshot Isolation. A 720-line deep dive into the real behavior of each isolation level and the MVCC internals of PostgreSQL and InnoDB.
2026-04-15 · 19 min read #database#mvcc#isolation-level#snapshot-isolation#serializableThe Complete Guide to Probabilistic Data Structures 2025: Bloom Filter, HyperLogLog, Count-Min Sketch, and Real-World Usage
Everything about probabilistic data structures! Bloom Filter, Counting Bloom Filter, HyperLogLog, Count-Min Sketch, MinHash, Cuckoo Filter — the memory-accuracy tradeoff, and real-world usage in RocksDB/Redis/Cassandra/S
2026-04-15 · 14 min read #bloom-filter#hyperloglog#count-min-sketch#probabilistic#data-structuresAI-Native UI and Generative UX 2025 — Complete Guide: Streaming UI, Tool Use Rendering, AI SDK (Vercel), LangChain UI, LlamaIndex.TS UI, Conversational Interfaces, Feedback and Correction UX, Uncertainty Visualization, Human-in-the-loop, 2025 AI Product UX Benchmark — Season 6 Ep 3
While AI generates a response, what does the user see? The full scope of 2025 AI-Native UI. Streaming UI (token-by-token render), Tool Use to dynamic card rendering, Vercel AI SDK, LangChain UI, LlamaIndex.TS UI, UX prin
2026-04-15 · 12 min read #ai-ui#generative-ui#streaming-ui#tool-use#ai-sdkCompiler and Linker Internals — From #include to an Executable: ELF, Symbols, Static/Dynamic Linking, Relocation, LTO (2025)
Tracing the journey of "hello.c" becoming an executable, atom by atom. The four phases of preprocess / compile / assemble / link, ELF file layout, symbol tables and relocation, the archive structure of static libraries,
2026-04-15 · 20 min read #compiler#linker#elf#symbol#static-linkingClickHouse MergeTree — The Complete Guide to Columnar, Sparse Index, Part, and Materialized View (2025)
Everything about ClickHouse MergeTree — the physical layout of columnar storage, parts and granules and the sparse primary index, why ORDER BY matters so much, projections and skip indexes, real-time aggregation with mat
2026-04-15 · 23 min read #clickhouse#olap#columnar#mergetree#analyticsPerformance & Core Web Vitals 2025 — LCP, CLS, INP, RUM, Image/Font/JS Optimization, Edge, CDN, HTTP/3 (S6 E6)
Performance is not a feature — it is the precondition for every feature. The full 2025 Core Web Vitals map: LCP, CLS, INP (FID successor), RUM vs synthetic, critical rendering path, JS bundle diet, image/font optimizatio
2026-04-15 · 7 min read #performance#core-web-vitals#lcp#cls#inpConsistent Hashing Complete Guide 2025: Virtual Nodes, Jump Hash, Rendezvous, and the Core Building Block of Distributed Systems
How DynamoDB, Cassandra, and Memcached minimize data movement when nodes are added or removed. A 700-line deep dive on Consistent Hashing, from first principles to virtual nodes (vnodes), Jump Hash, Rendezvous Hashing, a
2026-04-15 · 16 min read #consistent-hashing#distributed-systems#sharding#virtual-nodes#jump-hashComplete Guide to CDN & Edge Caching Strategies 2025: Cache Invalidation, ETag, Stale-While-Revalidate
Everything about CDNs and caching. HTTP cache headers (Cache-Control/ETag/Vary), how CDNs work, edge caching, the hard problem of cache invalidation (one of the two hard problems), Stale-While-Revalidate, and a compariso
2026-04-15 · 14 min read #cdn#cache#edge-computing#http-cache#cache-invalidationComplete Guide to Async I/O Models 2025: epoll, io_uring, Reactor/Proactor, and async/await Internals
Everything about async I/O. Blocking vs non-blocking vs async, the select/poll/epoll/kqueue evolution, the iouring revolution, Reactor/Proactor patterns, Tokio/libuv internals, and what async/await actually does.
2026-04-15 · 12 min read #async-io#epoll#io-uring#reactor#proactorCDN and Edge Computing Deep Dive — Anycast, Cache Invalidation, DDoS Defense, Lambda@Edge vs Workers vs Compute
From Akamai in 1998 to 2025 edge computing. The magic of Anycast, cache tier design, the philosophy of cache invalidation, the three-layer DDoS defense, and an architecture comparison of Lambda@Edge vs Cloudflare Workers
2026-04-15 · 14 min read #cdn#edge-computing#cloudflare#akamai#fastlyBinary Serialization Complete Guide 2025: Protobuf, Thrift, Avro, MessagePack, FlatBuffers, Cap'n Proto — Choosing Between Performance and Flexibility
Binary formats that are 10x faster and 5x smaller than JSON. From Protocol Buffers varint through FlatBuffers zero-copy to Avro schema evolution — a complete 720-line analysis of the internal structure and real-world sel
2026-04-15 · 29 min read #serialization#protobuf#thrift#avro#messagepackAI Product Design Complete Guide: Generative UI, Trust, Feedback, Streaming, Agent UX, Korean Culture Specialization (2025)
A good AI product is not "a good model + good UX" — it is "UX design that builds trust within constraints." The boundary between deterministic and generative UI, designing for trust, uncertainty, and editability, streami
2026-04-15 · 10 min read #ai-product-design#ux#generative-ui#trust#streamingAPI Versioning & Evolution Strategy Complete Guide 2025: Breaking-Change-Free API Evolution, Deprecation, Sunset
Everything about API versioning! URL/Header/Content negotiation strategies, breaking vs additive changes, Semantic Versioning, deprecation policy, Sunset header, GraphQL versionless approach, case studies of Stripe/GitHu
2026-04-15 · 12 min read #api#versioning#evolution#breaking-changes#deprecationAI-Era Developer Survival Strategy 2025 — Complete Guide: Copilot vs Cursor vs Claude Code vs Devin vs Codex, Prompt to Context Engineering, Senior/Junior Role Shifts, Team AI Adoption Roadmap, Portfolio, Korean Developers' Global Competitiveness — Season 5 Finale
The grand finale of Season 5. A survival strategy for developers living through the AI era of 2025. A deep comparison of GitHub Copilot, Cursor, Claude Code, Devin, and Codex; the shift from Prompt to Context Engineering
2026-04-15 · 15 min read #ai-developer#copilot#cursor#claude-code#devinThe Frontend Engineer in 2025 — Career Growth, RSC, Signals, AI, Edge, Burnout (Season 6 Finale)
The Season 6 finale: where is the frontend engineer role in 2026? Server Components and Signals changed the mental model. AI pair-programmers changed how we write code. The "full-stack TypeScript" identity matured. Here
2026-04-15 · 8 min read #frontend#career#rsc#signals#aiDeveloper Personal Finance Complete Guide: Salary Negotiation, RSU/Options, 401k, Startup Equity, FIRE (2025)
The science of salary negotiation, RSU vs stock options, Korean ESOP tax law, 401k and retirement pensions, startup equity vesting and exit scenarios, FIRE (Financial Independence Retire Early) math, personal finance in
2026-04-15 · 17 min read #personal-finance#salary-negotiation#rsu#stock-option#startup-equityThe Developer Learning Complete Guide: New Languages, New Domains, Papers, Lifelong Learning, and AI Learning Partners (2025)
The science of adult learning (Benedict Carey, Barbara Oakley). Reading proficiency in a new language in 30 days. The 3-pass paper reading method (S. Keshav). Building a learning system with Zettelkasten and Obsidian. Co
2026-04-15 · 15 min read #learning#skill-acquisition#programming-language#papers#ai-learningThe Complete Actor Model Guide 2025: Erlang OTP, Akka, Orleans, Elixir — The Real Way to Handle Millions of Concurrent Connections
How WhatsApp handled 2 million TCP connections on a single server. From the mathematical foundations of the Actor Model to Erlang OTP, Akka, and Microsoft Orleans — a 720-line deep dive into the "Let it crash" philosophy
2026-04-15 · 32 min read #actor-model#erlang#akka#orleans#elixirLanguage Learning Motivation Guide for Developers: Technical English, Effective Methods, and Global Career
Everything about developer language learning! Technical English (code review/PR/issues/docs), effective methods (spaced repetition/immersion/shadowing), motivation strategies, preparing English for global companies, Japa
2026-03-25 · 20 min read #language-learning#english#motivation#developer-english#technical-englishMastering FDE Interviews: 50 Power Phrases and STAR Framework for Technical Customer-Facing Roles
Complete guide to articulating technical experience persuasively in FDE/Success Engineer interviews at OpenAI, Cohere, Palantir. STAR framework, 50 essential expressions, scenario-based answer templates, and common pitfa
2026-03-23 · 40 min read #interview#english#fde#forward-deployed-engineer#career