node skillA
node is agent-read markdown (skill) from yuecao365/offercome: Node.js 后端怎么面：事件循环、流与背压、内存泄漏、Nest/Express。JD 点名 Node 时读。.
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What the file says
## 面试官在意什么 Node.js 后端集中在 BFF 与网关层、全栈团队、工具与平台类产品、实时通信（IM、协作、推送）、Serverless 与边缘函数，以及大量出海与外企的 TypeScript 全栈岗位。日常是用 NestJS/Express/Koa 或 Fastify 写 API、聚合下游服务、处理 WebSocket、写 SSR 与构建服务，跑在 PM2 或容器里。Node 面试的主线很清晰：事件循环与异步模型、Promise 与 async/await 的细节、流与背压、模块系统、性能与内存泄漏排查、集群与多进程、框架（Nest 的 DI 与生命周期）、TypeScript 工程化。因为单线程模型的特殊性，面试官最在意三件事：一是候选人是否真的理解"什么会阻塞事件循环"并能定位它；二是对异步错误处理是否严谨——未捕获的 rejection、流的错误、进程崩溃的处理；三是有没有把 Node 服务跑稳过：内存泄漏怎么抓、CPU 密集任务怎么隔离、多核怎么用、优雅退出怎么做。 校招侧重语言与运行时基础：事件循环各阶段与 microtask 顺序、Promise 的实现、闭包与 this、模块加载、能否写一个带并发限制的异步任务调度器。社招侧重生产问题与设计：接口偶发卡顿的排查、heap snapshot 分析、流式处理大文件、Nest 的模块与依赖注入设计、BFF 的聚合与降级、SSR 服务的性能。全栈岗位会同时追前端协作（接口契约、SSR、Monorepo），基础平台岗位会追 Node 底层（libuv、N-API、Worker Threads）与 Bun/Deno 的判断。 怎么问才像这个方向的面试官： - 架构与方法论（缓存一致性、消息队列、限流降级）交给 backend 包，本包专注 Node 运行时、异步模型、框架机制与生产运维。 - 事件循环必考且必须落到排查：不接受背阶段顺序，要给一个"服务卡住"的场景让候选人说定位工具与改法。 - 异步错误处理是分水岭：任何候选人都要被追未捕获 rejection、流的错误传播、进程崩溃策略，答不严谨的标记为危险信号。 - 结合岗位类型出题：全栈岗位追接口契约与 SSR；平台岗位追 Worker、多进程与运行时细节；小团队追 TypeScript 工程化与部署简化。 ## 项目 / 实习怎么深挖 简历上出现下面这类经历时从哪里切、追什么。追到候选人能说出机制、数字的来源与一次真实的故障或取舍才算实；只有框架名与结论、说不出自己那一段的，记为危险信号。通用的追问方法见 project-deep-dive。 - 简历出现 BFF / 接口聚合 → 追下游并行还是串行、超时与降级怎么做、聚合层的缓存策略、P99 与下游的差值 …
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How to install
mdr add yuecao365/offercome/node@git:20260920.a4843f5mdr add yuecao365/offercome/node@sha256:706f71ff01057d3fPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_44sex7a6xbjf64tq)
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Audit of the latest version
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Source
yuecao365/offercome · 23 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_44sex7a6xbjf64tq GET https://markdownregistry.com/api/v1/resolve?ref=yuecao365/offercome/node GET https://markdownregistry.com/api/v1/blob/706f71ff01057d3f630f8ca9fbb1a92e2ea91aee2a207fd42a9076219808de2b
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