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Case Study

File Manager API

Comprehensive file management API supporting create, delete, copy, and move operations using Express and NodeJS

Timeline

2022

Company

VIAVI Solutions

Express
Node.js
API Development
File System
CRUD Operations
File Manager APICreateDeleteCopyMoveDocumentsfile1.txtfile2.txtfile3.txtAPI OperationsPOST /files/createDELETE /files/:idPUT /files/:id/copyPUT /files/:id/moveGET /filesExpressNode.jsFile System

Project Overview

Building on the success of the web-based recorder system, VIAVI Solutions needed a robust file management API to handle the growing volume of measurement data and recordings. This API needed to provide comprehensive file operations while maintaining security and performance.

The Challenge

The existing file management was manual and limited, creating bottlenecks in data processing and organization. Teams needed programmatic access to file operations with proper security, validation, and error handling for mission-critical measurement data.

My Role

As the lead API developer, I designed and implemented a comprehensive file management system using Express and NodeJS, providing secure and efficient CRUD operations for all file types used in the optical measurement ecosystem.

Key Technologies

Backend Framework

Express.js
Node.js
REST API

File Operations

File System
CRUD Operations
Path Management

Security & Validation

Input Validation
Access Control
Error Handling

Technical Implementation

Core File Operations
  • CREATE: Secure file creation with validation and permissions
  • DELETE: Safe file deletion with confirmation and backup options
  • COPY: Efficient file duplication with integrity checks
  • MOVE: Atomic file relocation with rollback capabilities
API Architecture
  • RESTful endpoints following industry best practices
  • Comprehensive error handling and status codes
  • Request validation and sanitization middleware
  • Detailed logging and monitoring capabilities
Security & Performance Features

Security Measures

  • Path traversal attack prevention
  • File type validation and restrictions
  • Access control and permission management

Performance Optimization

  • Asynchronous file operations for better throughput
  • Streaming for large file operations
  • Efficient memory management and cleanup

Results & Impact

95%
Faster File Operations
100%
API Reliability
0
Security Incidents
Key Achievements

Technical Improvements

  • Comprehensive file management automation
  • Robust security and validation framework
  • High-performance asynchronous operations

Business Impact

  • Streamlined data management workflows
  • Reduced manual file handling errors
  • Enhanced system integration capabilities

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