Backend tech guide and AI engineering practice covering fundamentals, databases, distributed systems, high concurrency, system design, plus AI agents and large-model engineering.
A recent graduate compares offers from Meituan's Beijing marketing platform and ByteDance's Shanghai Douyin e‑commerce team, weighing base location, title prestige, salary, work pressure, team atmosphere, and career growth across transaction, product, instant delivery, and national subsidy domains.
Transsion’s Java positions in Shanghai and Shenzhen pay 300k‑400k RMB, the interview is surprisingly simple, and the article walks through Java’s compilation pipeline, JVM benefits, Java‑C++ differences, exception handling, collections, concurrency, multithreading, project‑prep tips, and essential AI concepts for interviewers.
Cursor, once hailed as the leading AI‑enhanced IDE, has shifted its focus by making Agent mode the default and launching its own large‑model Composer, which the vendor claims runs four times faster than comparable models, though real‑world performance remains to be validated.
The article shares recent JD backend salary data ranging from 24k to 32k RMB per month, explains the compensation structure, and provides a step‑by‑step interview preparation guide covering project presentation, JWT, Redis, thread pools, MySQL‑Elasticsearch sync, isolation levels and performance analysis.
Spring Boot 4.0 removes Undertow because it cannot meet the Servlet 6.1 baseline, leading to build failures for projects that depend on spring-boot-starter-undertow, and the article analyzes the technical reasons, compatibility matrix, and lessons for future web‑container selection.
The article reviews OPPO’s 2026 campus hiring salaries for backend and algorithm roles, outlines the interview stages, and provides a comprehensive Java guide covering exceptions, checked vs unchecked, reference types, HashMap concurrency issues, ConcurrentHashMap internals, and the differences between synchronized and volatile.
The article introduces Microstrategy, a US‑based BI firm with a large Hangzhou R&D center, outlines its generous 9‑5‑style work environment, details the interview stages—including written test, technical and non‑technical rounds—and provides concrete advice on self‑introduction, project presentation, system design, Canal‑MySQL sync, XXL‑Job video transcoding, Redis, MongoDB, SQL injection, Java exceptions, OOP concepts, and interview puzzles.
AipexBase, the first Chinese open‑source AI‑native backend‑as‑a‑service platform, lets developers and AI agents bypass traditional server, database, and authentication code by using an MCP‑compatible SDK, with step‑by‑step deployment, API key generation, and integration examples that demonstrate end‑to‑end intelligent app creation.
The article reveals Xiaohongshu’s unusually high 2023 campus recruitment packages—over 51 w annual total—while also providing an extensive backend interview preparation guide covering TCP vs UDP differences, design patterns, workflow versus rule engines, message‑queue selection, and Redis data structures and eviction policies.
The article shares ZTE salary offers and interview tips, then dives into technical deep‑dives on Spring bean injection annotations, compares MySQL InnoDB and MyISAM, explains Redis usage patterns, and walks through JVM OutOfMemoryError diagnosis with concrete code and tooling examples.
