The Xueersi Online School Tech Team, dedicated to innovating and promoting internet education technology.
This article provides a comprehensive overview of HBase, covering its origins, column‑family storage model, key components such as HMaster and HRegionServer, data‑location process, row‑key design strategies, practical use cases, and comparisons with relational and other NoSQL databases.
This article explains how Redis implements its Sorted‑Set using a skiplist, starting with the basics of a singly linked list, analyzing insertion and query complexities, deriving the skiplist structure and its O(log N) performance, and comparing it with hash tables, balanced trees, and B‑trees.
This article presents a detailed overview of the 4S Smart Student Service System’s web architecture, testing methodology, layered testing strategy, process governance, and efficiency improvements, offering practical guidance for QA teams to ensure reliable, secure, and scalable delivery of educational services.
This article explains how the V8 JavaScript engine allocates memory, why garbage collection is necessary, describes the memory layout of new and old generations, reviews common GC algorithms such as reference counting, mark‑sweep, mark‑compact and incremental marking, and offers practical tips for writing high‑performance JavaScript code.
This article provides a comprehensive overview of the qiankun micro‑frontend framework—including its background, core concepts of micro‑frontends, comparison with other solutions, detailed configuration examples for host and child applications, implementation details such as sandbox mechanisms, common pitfalls, and the overall impact on development efficiency and project complexity.
This article presents a code-less business process orchestration framework that transforms static Go code into configurable drag‑and‑drop workflows, detailing the underlying concepts, architecture, core Go data structures, dynamic configuration, and practical deployment examples for distributed task scheduling and execution.
This article introduces the testing pyramid, explains unit testing concepts, and provides a step‑by‑step guide for writing Go unit tests using the standard testing package, the AAA pattern, Testify assertions, mocks, and test suites, while highlighting the benefits of fast verification, documentation, and sustainable development.
This article explains server‑side network concurrency models, the fundamentals of streams and I/O operations, compares blocking and non‑blocking approaches, and details practical solutions such as multithreading, busy‑polling, select and epoll with code examples and performance analysis.
This article analyzes the limitations of traditional Lambda and Kappa big‑data architectures for online‑school behavior‑feature pipelines and presents a Flink + Hologres solution that provides unified real‑time OLAP and high‑concurrency point‑query services, including design choices, implementation details, and performance results.
This article chronicles the development of a new web live streaming solution, detailing the shift from Flash to HTML5 video, the integration of AI voice detection using hark, audio encoding with lamejs, WebRTC-based real‑time communication, and a systematic modular refactor that transformed the project into a reusable frontend framework.
