code: function MemcachedStore(options) {
      options = options || {};
      Store.call(this, options);
  
      this.prefix = options.prefix || "";
      this.ttl = options.ttl;
      if (!options.client) {
        if (!options.hosts) {
          options.hosts = "127.0.0.1:11211";
        }
        if (options.secret) {
          (this.crypto = require("crypto")), (this.secret = options.secret);
        }
        if (options.algorithm) {
          this.algorithm = options.algorithm;
        }
  
        options.client = new Memcached(options.hosts, options);
      }
  
      this.client = options.client;
    }
docs: Initialize MemcachedStore with the given `options`.
  
  @param {Object} options
  @api public