Knowledge Planet: Old Dock's Tech Chronicles Zhihu: SamDeepThinking A technical manager who still codes heavily on the front line. From junior developer to tech lead, then tech manager, now leading the whole front‑ and back‑end development team—leveling up along the way. I have some insights on programming, career development, and tech management.
The article argues that you can’t judge your suitability for management through tests or advice alone; only real leadership experience—such as owning projects, guiding newcomers, or handling cross‑team collaborations—reveals whether you have the necessary leadership and horizontal capabilities.
The Apollo 11 guidance computer faced near‑overload and alarmed during the final descent, yet Margaret Hamilton’s team used priority scheduling and fault‑tolerant design on a 32‑kg, 2 MHz machine with only a few kilobytes of memory, enabling the historic Moon landing.
The article explains that true P0 (urgent) requests should be extremely rare, serving only to pre‑empt ongoing work, describes how they typically originate from CEOs or CTOs, outlines the author’s execution approach, contrasts P0 with P1 priorities, and shares interview insights on judging project importance, including growth, brand, UX, and cost factors.
The article examines Bruce Eckel’s perspective on functions, tracing their origins from early assembly language to modern high‑level languages, highlighting practical motivations such as code reuse, debugging efficiency, and meaning‑driven design, while contrasting historical structured programming with contemporary polymorphic concepts.
The article explains MyBatis’s three‑stage process—building an in‑memory mapping dictionary at startup, using JDK dynamic proxies to bind interface methods to that dictionary, and the runtime execution flow that translates a mapper call into JDBC operations, highlighting design choices such as builder chains, pre‑loading, and composition over inheritance.
This article explains MySQL index fundamentals—from the B+‑tree storage engine and InnoDB’s clustered and secondary indexes to query execution, common index‑failure scenarios, and practical design principles for building effective indexes in interview settings.
This article walks through a side‑by‑side examination of MyBatis‑Flex and MyBatis‑Plus, covering entity annotations, query construction, pagination, architectural differences, APT‑generated code, multi‑table joins, partial updates, and the trade‑offs of each design, helping developers choose the right ORM for their projects.
The article argues that leaders care more about a team member's reliability than the exact delivery time, and outlines a practical pre‑during‑post framework to build trust, communicate risks, and continuously improve task execution.
The author recounts joining a chain‑store tech startup housed in a rented residential house, taking an ¥8,000 salary reduction because the leader’s expertise, the company’s stability, and the chance to build core IT systems outweighed the poor office environment.
The article explains a professional approach to handling vague or low‑impact requests from senior leaders by providing clear upfront assessments, timely feedback during execution, and post‑completion reflections to build trust and avoid silent missteps.
