Implement Centralized Caching Service for CoinGecko Mock API

[Merango]

Implement Centralized Caching Service for CoinGecko Mock API

Description

Task

Create a centralized caching service

Acceptance Criteria

• Centralized caching mechanism implemented
• Singleton instance management works correctly
• Type-safe cache operations are supported
• Configurable cache settings are available
• Error handling for invalid operations is robust
• Performance monitoring capabilities are in place

Summary of Work

Overview

This pull request introduces a robust, centralized caching service for the CoinGecko Mock API, providing a flexible and type-safe caching mechanism using node-cache.

Key Changes

• Implemented a singleton CacheService class in src/cache-service.ts
• Provides comprehensive caching functionality with type safety
• Supports configurable cache settings (TTL, check period)
• Offers methods for cache manipulation and monitoring

Implementation Details

CacheService Features

• Singleton pattern to ensure a single cache instance
• Configurable default TTL (10 minutes) and check period (2 minutes)
• Type-safe methods for setting, getting, and managing cache
• Error handling for invalid cache operations
• Ability to retrieve cache statistics

Supported Operations

• set<T>(key, value, ttl?): Store values in cache
• get<T>(key): Retrieve cached values
• delete(key): Remove specific cache entries
• has(key): Check cache key existence
• clear(): Flush entire cache
• getStats(): Retrieve cache performance metrics

Testing Approach

• Comprehensive unit tests in src/cache-service.test.ts
• Validate all cache operations
• Test error scenarios and edge cases
• Verify singleton behavior
• Performance and reliability checks

Considerations

• Default cache TTL is set to 10 minutes
• Supports custom cache configuration
• Easily extendable for future requirements

Next Steps

• Integrate with existing route handlers
• Add more comprehensive error logging
• Consider distributed caching for production

Changes Made

• Implemented singleton CacheService in src/cache-service.ts
• Added type-safe cache methods
• Configured default cache settings
• Implemented error handling for cache operations
• Created methods for cache manipulation and monitoring

Tests

• Verify singleton instance creation
• Test setting and getting cache values
• Check cache key existence method
• Validate error handling for invalid operations
• Test cache clearing and deletion
• Verify cache statistics retrieval

Signatures

Staking Key

84mPEB3qLaB2KQr1RXxNgYDF5DSv5ZyuDPpb9qeeNyyT: 44ZaEbCFGo2N5z6vJUBWPjSCFzyhNvBgeDmHomeoCATy3fg1XbBxL8Ur6jp6QoABaacgAjSUdR8M8MvyoqcRvWSKVc2hpwihjiyuv8dUCA1Rx29xdTaJnfYRvcNHSA6DUL3M9rkkBp4jb7SSJdG34hrChUtJ2sTDehVTUaL27Hnz4en1thkt7XybetJ8BH9qFb26mBD2Kq6STHZXFLCzHVRk1xSn6f14ZDBWL2yxhazSvJzz72fkvTHbmhU3hCXwEKrrVmbK7Zi1B4jEQBLG7TRX54iWbe8oxYbcqhXE7nFSpMCVXUpgt3kmiU5vTNPkufbNdHHtbU8LbeX3334B4XmQMymYa8EZLwpgCHcsm3GkMDpLSTxxWynyPzGhL9bkgHvPwmEtdg6bVZQKzFYKUfM57ZoaqA

Public Key

FLcUWedFSfvYeGjtnoXqgNtvtqEBCKwUK7Qn48hGnwsk: D9BUMBcpmsEq4fRb5gRkmECq2drP2RVVaCakpb2GUuqtATGfwodEnqhvKkVzg3xdo4uEMei5xfCiSeSw56yPS5SBhxFCM1Jb1TsULbtoJuWPu2mdGH1VgBMmFN5eJZSjr4da45xR8tfNCdGbwTEyusjNJnQ7uggKQKHJGJkJ4xXAvVxJDAuuYuXwEQzeFi4mNnEP35hPfs7WEufHWbAryYEhv7UwbqU7VsPhkoLKY2HssLKkybbAzindURcQ9ZRez7jn5KaZQr9z1A3MQhen11PKrLHne9MusPUhdn3RVdMQdascT44yXZaNJ6t4WMpj1sB6nwiDgjPLBz7SjvPDa3ifqVbihW7eJBHDK6pPbTTrQAC6A43Go69EzCzVxYrDnTrXnVDzhnwEhFhoRZN4gTRRRBj2rG