cache-set

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A minimal cache that actually just is a Set.

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Get it!

npm install --save cache-set

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Usage

var CacheSet = require('cache-set')
var cache = new CacheSet()
 
cache.add(27, 419) // time-to-live, value
 
console.log(cache, cache.size)
 
setTimeout(function () {
  console.log(cache, cache.size) // will be empty
}, 28)

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API

var cache = new CacheSet([ttl, iterable][, willDelete(value, doDelete)])

Create a new CacheSet instance. If iterable is provided all passed items get added to the set during instantiation, and deleted after ttl. If willDelete is a function it will be called as a cleanup hook before items are deleted from the set but after ttl has exceeded. Make sure to call the doDelete callback at the end of the willDelete hook to actually perform the deletion.

cache.add(ttl, ...itemsAndOptionalwillDeleteHook)

Provide ttl, time to live in ms, and a variable number of items that will get deleted from the set at the end of their lifetime. If the last argument is a function it will be called as a cleanup hook before items are deleted from the set but after ttl has exceeded. Make sure to call the doDelete callback at the end of the willDelete hook to actually perform the deletion.

cache.find(predicate)

Find a value in the set. Equivalent to Array.prototype.find.

cache.some(predicate)

Check if any predicate(value) is truthy. Equivalent to Array.prototype.some.

cache.every(predicate)

Check if all predicate(value) are truthy. Equivalent to Array.prototype.every.

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License

MIT