This article shares practical insights on work habits, personal growth, knowledge‑system construction, and early career planning for software developers, emphasizing solid fundamentals, balanced work‑life practices, and the importance of soft skills in a saturated tech market.
This article explains why using only file name and size to detect duplicate uploads is unreliable, demonstrates how to compute reliable file checksums in Java, and shows through experiments that identical content yields identical hashes regardless of name or type, providing a robust deduplication solution.
This article outlines a comprehensive knowledge framework for software architects, covering nineteen essential areas such as responsibilities, foundational concepts, internet system challenges, distributed caching, messaging, load balancing, performance testing, operating systems, algorithms, networking, database design, JVM internals, flash-sale systems, microservices, domain‑driven design, security, high‑availability, big data, and blockchain.
This article explains the roles of app_id, app_key, and app_secret in third‑party platform authentication, how they differ, when they are used together, and various usage patterns for fine‑grained permission control and secure token generation.
Early in a tech career, building a personal knowledge system—by avoiding over‑focus on details, consolidating frameworks, strengthening backend fundamentals, and visualizing one's skill map—helps engineers make informed design choices, retain learning, and stay competitive, as illustrated through interview preparation insights.
This article explains the four theoretical I/O models—blocking, non‑blocking, synchronous, and asynchronous—and details five practical network service I/O patterns, illustrating each with diagrams and showing how they can be implemented using libraries such as libevent.
