ptarjan/node-cache
Node Cache
Node-cache is a lightweight in-memory data storage module designed for Node.js applications. It functions as a key-value store that maintains frequently accessed data directly within the application runtime to improve response times and reduce latency.
The library manages the lifecycle of stored information through automated expiration policies, which use internal timers to remove stale entries once a defined time-to-live duration has elapsed. It provides granular control over stored resources, allowing for the manual inspection, deletion, or clearing of specific keys to manage memory usage effectively.
Beyond basic storage, the module includes observability tools that track cache hits, misses, and total entry counts to assist in evaluating storage efficiency. It also supports state persistence by providing utilities to serialize the entire cache contents into a JSON format, facilitating data migration or state restoration across application environments.
Features
- In-Memory Data Stores - Stores frequently accessed data in application memory to reduce latency for Node.js backend services.
- TTL Expiration Management - Implements automatic removal of stale entries using internal timers based on defined time-to-live durations.
- Entry Expiration Policies - Automates the removal of stale information to reclaim memory and ensure data remains current.
- Node.js Caches - Provides a lightweight storage module for keeping key-value pairs in Node.js application memory.
- Key-Value Stores - Functions as a lightweight local key-value store for managing temporary application data.
- Cache Value Retrievals - Enables efficient storage and retrieval of key-value pairs with safe handling of missing or expired items.
- In-Memory State Maps - Uses standard JavaScript objects as key-value structures to provide constant-time access to cached application state.
- Cache Expiration Management - Manages the lifecycle of cached items through automated expiration policies to ensure data freshness.
- Cache Key Management - Provides administrative tools to inspect, clear, or delete specific keys to maintain precise control over memory usage.
- Node.js Development Utilities - Acts as a performance utility to improve application response times by caching data within the runtime.
- Cache Efficiency Metrics - Provides internal event signals for cache hits and misses to enable real-time monitoring of storage efficiency.
- Cache Performance Monitoring - Tracks cache hits, misses, and entry counts to evaluate storage efficiency and identify performance bottlenecks.
