✅ LRU Cache Clear API Implementation Complete

Implementing LRU cache clear API with IP restriction and token authentication for dev branch:

• Analyze existing codebase structure and LRU cache implementation
• Understand current storage drivers (Redis/SQLite) with cache support
• Build and test current codebase to ensure functionality
• Add cache clear method to storage interface
• Generate random token on service startup
• Create cache clear handler with 127.0.0.1 IP restriction and token validation
• Add new route for cache clear endpoint
• Add configuration support for cache clear feature
• Write tests for new functionality
• Verify end-to-end functionality with manual testing
• Create comprehensive documentation

🚀 Features Implemented

API Endpoint

• Endpoint: POST /admin/clear-cache?token=<random-token>
• Security: Only accessible from 127.0.0.1 (localhost)
• Authentication: Random 32-character token generated on startup

Security Features

• ✅ IP Restriction: Validates requests come from localhost/loopback addresses
• ✅ Token Authentication: Requires valid token parameter
• ✅ Random Token Generation: 32-character alphanumeric token per session
• ✅ Security Logging: All access attempts and security violations logged

Compatibility

• ✅ Redis Storage: Works with Redis + LRU cache
• ✅ SQLite Storage: Works with SQLite + LRU cache
• ✅ Configurable: Supports environment variables and TOML config

Testing & Validation

• ✅ Unit Tests: Comprehensive test coverage for all scenarios
• ✅ Manual Testing: End-to-end functionality verified
• ✅ Security Testing: All security restrictions validated
• ✅ Error Handling: Proper HTTP status codes and error messages

Documentation

• ✅ API Documentation: Complete usage guide with examples
• ✅ Security Guidelines: Best practices and considerations
• ✅ Configuration Examples: Redis and SQLite setup examples

📋 Usage Example

# Service startup (token logged automatically)
INFO admin cache clear token generated: 9HzET3R4r0uH6UGLoEG13DDxAYFTXgTp

# Clear cache (from localhost only)
curl -X POST "http://localhost:8080/admin/clear-cache?token=9HzET3R4r0uH6UGLoEG13DDxAYFTXgTp"
# Response: {"Code":0,"Message":"cache cleared successfully","Data":null}

Implementation complete and ready for production use! 🎉

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.