createCacheManager

Creates a simple in-memory cache manager with optional TTL (time-to-live) support for each entry.

Usage

import { createCacheManager } from 'rattail'

const cache = createCacheManager({ ttl: 1000 }) // default TTL: 1000ms

cache.set('foo', 123)
cache.get('foo') // 123

setTimeout(() => {
  cache.get('foo') // undefined (expired)
}, 1500)

cache.set('bar', 456, { ttl: 5000 }) // custom TTL for this entry
cache.has('bar') // true
cache.remove('bar')
cache.has('bar') // false
cache.clear() // clear all

Arguments

Arg	Type	Description	Default
options	object	Cache manager options	{}
options.ttl	number	Default TTL in ms for all entries	Infinity

Methods

Method	Description
set(key, value, options?)	Set a value with optional TTL override
get(key)	Get a value by key (auto-purges expired)
has(key)	Check if a key exists and is not expired
remove(key)	Remove a value by key
clear()	Clear all cache entries

Return

Returns a cache manager object with the above methods.

Notes

• Expired entries are automatically purged on access.
• TTL is in milliseconds. If not set, entries never expire.
• Each entry can override the default TTL via set method.