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Sleeping
| import { config } from './config'; | |
| // 先入先出缓存 | |
| export default class Cache { | |
| constructor(capacity = 1000000) { | |
| this.capacity = capacity; | |
| this.cache = []; | |
| this.map = new Map(); | |
| } | |
| // 获取一个键的值 | |
| get(key) { | |
| if (!config.enableCache) return false; | |
| if (this.map.has(key)) { | |
| return this.map.get(key); | |
| } | |
| return null; | |
| } | |
| // 设置或插入一个值 | |
| put(key, value) { | |
| if (!config.enableCache) return false; | |
| if (this.cache.length >= this.capacity) { | |
| const oldestKey = this.cache.shift(); // 移除最老的键 | |
| this.map.delete(oldestKey); // 从map中也删除它 | |
| } | |
| if (!this.map.has(key)) { | |
| this.cache.push(key); // 将新键添加到cache数组 | |
| } | |
| this.map.set(key, value); // 更新或设置键值 | |
| } | |
| // 检查缓存中是否存在某个键 | |
| has(key) { | |
| if (!config.enableCache) return false; | |
| return this.map.has(key); | |
| } | |
| } | |