URL Parameters vs Query Strings in Express.js

Short summary

This Express.js tutorial clarifies when to use URL parameters versus query strings in REST API design. URL parameters (like /users/123) identify specific resources and are part of the route path; query strings (like ?sort=asc&limit=10) provide optional filters, search terms, or metadata. The post includes code examples, a comparison table, and practical use cases showing when each pattern makes sense for building cleaner, more intuitive APIs.

• •URL parameters identify and locate resources; query strings apply optional filtering, sorting, or pagination
• •Parameters are required and part of the route path; query strings are optional and don't affect route matching
• •Use parameters for IDs and slugs; use query strings for filters, search terms, and configuration options

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