demo/cache.ts

interface CacheDetail {
  value: any;
  expiresTimeStamp: number;
}

interface CacheMap {
  [cacheKey: string]: CacheDetail;
}

/**
 * 默认过期时间
 */
export const DEFAULT_EXPIRES = 5 * 60 * 1000;

let data: CacheMap = {};

export default class {
  /**
   * 插入指定名称数据
   * @param {string} name
   * @param {T} cache
   * @param {number} expires 有效时间（毫秒时间戳）
   */
  static set<T = any>(name: string, cache: T, expires: number = DEFAULT_EXPIRES) {
    data[name] = {
      value: cache,
      expiresTimeStamp: Date.now() + expires,
    };
    return this;
  }

  static get<T = any>(name: string): T | null {
    const detail = data[name];
    if (!detail) return null;

    try {
      if (detail.expiresTimeStamp && detail.expiresTimeStamp > Date.now()) {
        return detail.value || null;
      }
    } catch (err) {}
    this.clear(name);
    return null;
  }

  /**
   * 获取指定名称数据
   * @param {string} name
   */
  static clear(name: string) {
    delete data[name];
    return this;
  }

  /**
   * 清除所有数据
   */
  static clearAll() {
    data = {};

    return this;
  }
}