Stop 05 · Express.js & Web FrameworksProjects · 3/3
File Upload Service
Part of the Backend Developer Roadmap
In short
A dedicated service for accepting, validating and storing file uploads — practice for Multer, file validation, and cloud storage integration.
How to learn this
- 1Accept uploads with Multer and validate file type/size before saving.
- 2Upload files to cloud storage (S3 or equivalent) instead of local disk.
- 3Return a public or signed URL for each uploaded file.
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