Dismissible manages the state of your UI elements across sessions, so your users see what matters, once! No more onboarding messages reappearing on every tab, no more notifications haunting users across devices. Dismissible syncs dismissal state everywhere, so every message is intentional, never repetitive.

@dismissible/nestjs-memory-cache

In-memory LRU cache adapter for the Dismissible system.

Overview

This library provides:

• MemoryCacheAdapter - In-memory LRU cache implementation using lru-cache
• Cache adapter for the Dismissible system with automatic eviction

Installation

npm install @dismissible/nestjs-memory-cache

Getting Started

Using In-Memory Cache

The memory cache adapter is useful for development, testing, or single-instance production deployments:

import { Module } from '@nestjs/common';
import { DismissibleModule } from '@dismissible/nestjs-core';
import { MemoryCacheModule } from '@dismissible/nestjs-memory-cache';

@Module({
  imports: [
    DismissibleModule.forRoot({
      cache: MemoryCacheModule.forRoot({
        maxItems: 5000,
        ttlMs: 6 * 60 * 60 * 1000, // 6 hours
      }),
    }),
  ],
})
export class AppModule {}

Configuration Options

• maxItems (optional): Maximum number of items to cache (default: 5000)
• ttlMs (optional): Time-to-live in milliseconds (default: 6 hours)

API Reference

MemoryCacheAdapter

An in-memory implementation of IDismissibleCache using LRU (Least Recently Used) eviction. Data is stored in memory and will be lost when the application restarts.

Note: This adapter is suitable for single-instance deployments. For distributed systems, consider using @dismissible/nestjs-redis-cache.

MemoryCacheModule

MemoryCacheModule.forRoot(options)

Register the memory cache adapter with configuration options.

MemoryCacheModule.forRootAsync(options)

Register the memory cache adapter with async configuration.

License

MIT