Q1. What is an API gateway and what does it do?
An API gateway is the single entry point for clients, sitting in front of backend services. It typically handles: - Request routing to the correct service. - Authenticati...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (79 available).
Active:
Tag: routing ×
Q2. How does SvelteKit routing and data loading work?
SvelteKit uses filesystem routing under src/routes. A +page.svelte renders a page, +page.js or +page.server.js exports a load function that runs before the page and retur...
Q3. Explain middleware in Express.
Middleware are functions with the signature (req, res, next) that run in order and can inspect or modify the request/response, end the cycle, or pass control with next()....
Q4. What is the difference between routing and switching?
Switching and routing both forward packets, but at different layers and scopes. A switch works at layer 2 using MAC addresses within a single broadcast domain, the LAN. I...
Q5. What are the RabbitMQ exchange types?
Producers publish to an exchange, which routes to queues via bindings. The exchange type decides the routing: - Direct: routes by exact routing key match. Common for task...
Q6. What is Next.js middleware and when should you use it?
Middleware in middleware.ts at the project root runs before a request is completed, on the Edge runtime, and can rewrite, redirect, set headers or return a response direc...
Q7. What is the `metadata` export in the App Router and how do you use it?
The App Router supports a `metadata` export (or `metadata.js/ts`) to define route-level metadata like title, description, open graph tags and robots. You can export a sta...
Q8. How do fetch cache options work in the App Router?
The `fetch` API in server components supports caching controls via `{ next: { revalidate } }` and cache modes like `cache: 'no-store'` or `cache: 'force-cache'`. Use `no-...
Q9. What does the `dynamic` export do in the App Router?
Exporting `dynamic` controls how a route is rendered: `'force-dynamic'`, `'force-static'`, or `'auto'`. Use it to override Next.js detection — for example, force dynamic ...
Q10. How do you set head metadata per-route with `head.js` / `head.tsx`?
In the App Router you can create a `head.js` or `head.tsx` file inside a route segment to return `` elements (title, meta, link) for that segment. This is preferred for c...