Sha256: 359fdd28c1a35f8dae1c71483c5ba4c7af1f92c847057b6a5f0926140a88e694
Contents?: true
Size: 1.27 KB
Versions: 45
Compression:
Stored size: 1.27 KB
Contents
/**
* @author Toru Nagashima
* See LICENSE file in root directory for full license.
*/
"use strict"
const SKIP_TIME = 5000
/**
* The class of cache.
* The cache will dispose of each value if the value has not been accessed
* during 5 seconds.
*/
module.exports = class Cache {
/**
* Initialize this cache instance.
*/
constructor() {
this.map = new Map()
}
/**
* Get the cached value of the given key.
* @param {any} key The key to get.
* @returns {any} The cached value or null.
*/
get(key) {
const entry = this.map.get(key)
const now = Date.now()
if (entry) {
if (entry.expire > now) {
entry.expire = now + SKIP_TIME
return entry.value
}
this.map.delete(key)
}
return null
}
/**
* Set the value of the given key.
* @param {any} key The key to set.
* @param {any} value The value to set.
* @returns {void}
*/
set(key, value) {
const entry = this.map.get(key)
const expire = Date.now() + SKIP_TIME
if (entry) {
entry.value = value
entry.expire = expire
} else {
this.map.set(key, { value, expire })
}
}
}
Version data entries
45 entries across 44 versions & 2 rubygems