IntermediateApplied2 weeks

File Storage

Handle uploads, file validation, object storage, signed URLs, metadata, and safe delivery.

Topic 13 of 24

Prerequisites

API Development
Authentication & Authorization

Key Concepts & Skills

Local Storage
AWS S3
Cloud Storage
File Upload Systems
Validate uploads
Use object storage
Generate signed URLs
Store metadata

Learning Outcomes

Understand the core principles of Local Storage
Configure and deploy AWS S3 successfully
Troubleshoot common issues with Cloud Storage
Understand the core principles of File Upload Systems
Configure and deploy Validate uploads successfully
Troubleshoot common issues with Use object storage
Understand the core principles of Generate signed URLs
Configure and deploy Store metadata successfully

Resources

Official Docs

Amazon S3 docs Google Cloud Storage docs

Community

Multer docs

Practice Exercises

Upload images safely.Generate signed download URLs.Reject invalid file types and sizes.

Project Task

Build a file storage service with metadata and access control.

Quiz

Why should user uploads not be served directly from application servers?Explain the answer with one real-world example.List one mistake a beginner might make here.

Notes