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dynamic catch-all routes in next.js 14: a comprehensive tutorial

next.js, especially in version 14 with the app router, offers powerful routing capabilities, including dynamic routes. among them, *dynamic catch-all routes* provide a flexible way to handle an arbitrary number of segments in a url. they're incredibly useful for scenarios like blogs with nested categories, documentation pages, e-commerce with deep product hierarchies, and more.

this tutorial delves deep into dynamic catch-all routes, covering their mechanics, implementation, use cases, considerations, and best practices.

*what are dynamic catch-all routes?*

a dynamic catch-all route is a dynamic route segment enclosed in square brackets with three dots `[...]`, such as `[...slug]`. this segment captures one or more segments of the url path. unlike a regular dynamic route (`[id]`) that matches exactly one segment, a catch-all route can match multiple segments, treating them as a single parameter.

*key characteristics:*

*multiple segments:* the core feature is capturing multiple segments after the route prefix.
*parameter as array:* the value passed to your page component is an array of strings. each element in the array corresponds to a segment captured by the catch-all route.
*optional catch-all:* you can make the catch-all segment optional by wrapping it in double square brackets: `[[...slug]]`. this means the route will also match when there are no segments after the initial path.
*pathname-based routing:* based on the app router's philosophy, the structure of your directories directly mirrors the url structure. this provides intuitive and predictable routing.
*server components emphasis:* catch-all routes, like other routes in the app router, are naturally aligned with server components, enabling efficient data fetching and rendering on the server.

*use cases:*

*blog with nested categories:* `/blog/category1/subcategory2/article-title` (`app/blo ...

#NextJS #DynamicRouting #databaseoptimization
Dynamic routes
catch-all routes
Next.js 14
routing
URL segments
server-side rendering
API routes
file-based routing
multi-segment routes
wildcard routes
Next.js features
React framework
dynamic pages
web development
SPA routing