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• Async Rust: async/await and the Tokio Runtime

  Async in Rust has a different flavor from other languages. A Future is just a lazy state machine, and without an executor to poll it, nothing happens. What a Future really is, what .await means, the executor/runtime (Tok

  2026-06-29 · 11 min read #rust#async#tokio

• A DNS Deep Dive — The Infrastructure Hidden Behind Names ♪ Listenable

  DNS is not a simple name tag but a vast distributed infrastructure that holds up the internet. From the hierarchy and recursive/authoritative resolution, record types, TTL and caching, Anycast and GeoDNS, to DNSSEC and D

  2026-06-29 · 22 min read #network#dns#anycast#cdn#infrastructure

• Opinionated Tools — The Philosophy of Code Formatters and Linters ♪ Listenable

  Why code formatters end debates and preserve consistency. Comparing gofmt and gofumpt, prettier, black, and ruff, this piece lays out the philosophy of strictness versus flexibility, the difference from linters, CI enfor

  2026-06-29 · 22 min read #devops#formatter#linter#developer-tools#tooling

• The Rise of AI Code Review Tools — How Automated Review Changes Teams ♪ Listenable

  AI code review tools are pouring out as open source and reshaping developer workflows. From Git diff analysis, defect detection, and convention enforcement to the division of labor with human reviewers, false-positive ma

  2026-06-29 · 20 min read #devops#ai#code-review#ci-cd#developer-tools

• Distributed Transactions: 2PC vs the Saga Pattern

  Why the ACID that was easy inside one database falls apart across services, how two-phase commit works and where it breaks (coordinator, blocking, failure modes), the Saga pattern (choreography vs orchestration, compensa

  2026-06-29 · 12 min read #distributed-systems#transactions#saga

• Tactile Sensing and Dexterous Manipulation — Robots That Feel with Their Fingertips ♪ Listenable

  Robots have begun to feel the world with their fingertips. We lay out vision-based tactile sensors (the GelSight family) and electronic skin, the role of touch in sensing slip, force, and texture, visual-tactile fusion,

  2026-06-29 · 21 min read #ai-papers#robotics#tactile-sensing#manipulation#gelsight

• JLPT N3 Reading and Listening — Strategies for a High Score

  A focused attack on JLPT N3 reading and listening — the high-weight sections that trip up learners from Korean. Passage types and approaches, tracking keywords, referents, and connectors, time allocation, listening note-

  2026-06-28 · 10 min read #japanese#jlpt#n3#reading#listening

• JLPT N3 in 5 Days — An Ultra-Compressed Crash Course When Time Is Short ♪ Listenable

  An emergency pass strategy for when you have only five days left before the exam. Give up on perfection and focus on clearing the 95-point pass line and avoiding a sectional fail. Includes a time-blocked 5-day plan, a mi

  2026-06-28 · 28 min read #japanese#jlpt#n3#crash-course#study-guide

• JLPT N3 Essential Grammar Patterns — A Complete Roundup

  About 40 core JLPT N3 grammar patterns organized by meaning group in tables. See connection form, meaning, and examples at a glance, compare easily confused patterns, and sharpen your skills with grammar-solving tips and

  2026-06-28 · 17 min read #japanese#jlpt#n3#grammar#study-guide

• Conquering JLPT N3 — A Section-by-Section Exam Strategy

  A complete, section-by-section strategy for passing JLPT N3. From the exam structure, scoring, and pass criteria to tactics for vocabulary, grammar, reading, and listening, plus time management, error reduction, exam-day

  2026-06-28 · 12 min read #japanese#jlpt#n3#exam-strategy#study-guide

• Reading Logs and Stack Traces Like a Detective

  A stack trace is a crime scene; logs are witness statements. How to read a stack trace top to bottom (the top is where it blew up, the bottom is the origin), follow the "caused by" chain, use structured/JSON logging, cor

  2026-06-28 · 13 min read #logging#debugging#stack-trace#observability

• Building Web APIs in Rust: Axum and Actix

  A practical guide to building web backends in Rust. Axum's handlers, extractors, routing, and shared state; tower middleware; JSON with serde; database access with sqlx; robust error handling; and a comparison with the o

  2026-06-28 · 10 min read #rust#web#axum#backend

• The Truth About Exactly-Once Semantics

  What the three delivery guarantees (at-most-once, at-least-once, exactly-once) actually mean, why exactly-once delivery is fundamentally impossible while exactly-once processing is achievable through idempotency, dedupli

  2026-06-28 · 13 min read #distributed-systems#messaging#reliability

• Kubernetes Architecture Visualized — From the Control Plane to the Pod

  We unpack the Kubernetes architecture with ASCII diagrams, from control-plane and node components to objects and controller loops, scheduling flow, networking, and storage. Request handling and the pod-creation sequence

  2026-06-27 · 11 min read #kubernetes#architecture#control-plane#scheduling#networking

• Mastering Hiragana and Katakana — Your First Step into Japanese ♪ Listenable

  A complete guide to the kana scripts that begin every Japanese journey. It covers the full system of base sounds, voiced and semi-voiced marks, contracted sounds, the small tsu and long vowels, the gojuon chart, how to t

  2026-06-27 · 22 min read #japanese#hiragana#katakana#kana#study-guide

• CUDA Architecture Visualized — From Threads to Tensor Cores

  A diagram-driven tour of the CUDA execution model and GPU hardware. We walk through the grid-block-warp-thread hierarchy, SM internals, the memory hierarchy, warp scheduling and occupancy, tensor cores, and streams, all

  2026-06-27 · 17 min read #cuda#gpu#tensor-core#warp#memory-hierarchy

• A Kanji Study Strategy — A Roadmap for the JLPT and Real Use ♪ Listenable

  Memorizing kanji blindly burns you out fast. This guide covers approximate kanji counts per JLPT level, efficient memorization that combines radicals, words, and spaced repetition, the balance between writing and reading

  2026-06-27 · 26 min read #japanese#kanji#jlpt#study-strategy#srs

• Revisiting Hadoop Architecture — HDFS, YARN, and Beyond ♪ Listenable

  A diagram-driven walkthrough of Hadoop core internals — HDFS, YARN, and how MapReduce works. We look at how Hadoop role has shifted in the era of object storage, the cloud, and the lakehouse, and how we should understand

  2026-06-27 · 30 min read #hadoop#hdfs#yarn#mapreduce#lakehouse

• Next.js 16 Architecture — A Deep Dive into Turbopack and Cache Components

  A deep look at the Next.js 16 architecture through the lens of App Router structure, the server/client component boundary, rendering models, Cache Components, and Turbopack, now the default bundler. We unpack the request

  2026-06-27 · 11 min read #nextjs#turbopack#cache-components#app-router#rendering

• MariaDB Architecture — From Storage Engines to Galera ♪ Listenable

  A top-down walk through the MariaDB server architecture, from the connection layer to the parser, optimizer, and executor, covering storage engine selection criteria, replication, the Galera synchronous multi-master clus

  2026-06-27 · 20 min read #mariadb#storage-engine#galera#replication#innodb