Practical internet development experience, tech sharing, knowledge consolidation, and forward-thinking insights.
This article provides a comprehensive overview of InnoDB architecture, covering its memory structures, background threads, and key features like checkpoint mechanisms, double write, and neighbor page flushing, essential for understanding MySQL's default storage engine.
This article explains why global transactions are required in distributed systems, compares major transaction models such as XA, LCN, TCC, SAGA, and AT, and provides a detailed overview of Seata's architecture, deployment options, configuration, and code examples for implementing the AT mode in microservice environments.
This article explains the fundamental concept of recursion using a cinema‑seat analogy, demonstrates array‑sum and Fibonacci implementations in JavaScript, shows how to visualize recursive calls, discusses stack‑overflow and redundant computation issues, and presents iterative and memoized alternatives.
This article explains why caching is used, distinguishes between local and distributed caches, compares popular Java cache libraries, describes Redis and Memcached differences, outlines the Cache‑Aside pattern, and discusses common cache problems such as inconsistency, penetration, breakdown, avalanche, hot‑key detection, and their mitigation strategies.
This article analyzes the inconsistency between 2D physics engine mass calculations (mass = density × area) and real‑world physics (mass = density × volume), proposes measurement methods for volume, density, and mass, and presents three implementation strategies for correcting the discrepancy in nape and box2d engines.
This article discusses adaptive scaling methods for canvas-based interactive courseware development, comparing two approaches to maintain aspect ratios while ensuring content visibility across varying screen resolutions and window sizes.
This article explains the concept of unit testing, introduces the Jest framework and its configuration, demonstrates common APIs, matchers, asynchronous testing, mocking, coverage reporting, and shows how to test React components using React Testing Library with practical code examples.
The article introduces xlss, a high‑performance, highly‑available Kubernetes local storage solution, details its core components, application scenarios, custom scheduler design, backup and recovery processes, and provides code snippets and CRD examples for implementing resilient stateful workloads.
This article explains the concepts of polygons, including simple, convex, and concave types, describes vertex visibility, ear clipping, and various algorithms for polygon triangulation and convex decomposition, discussing their complexities and practical considerations.
This article explains the end‑to‑end live‑streaming workflow, covering how a broadcaster pushes video and audio to a server, the various streaming protocols (RTMP, HTTP‑FLV, HLS, RTP), encoding formats, FFmpeg‑based decoding, hardware vs software decoding, and audio‑video synchronization techniques.
