Method and device for optimizing memory storage space of mass data

The invention discloses a mass data memory storage space optimization method and device. The method comprises the following steps: acquiring a preset encryption mode to obtain a ciphertext; distributing the key value of each ciphertext to a preset bucket; and intercepting a character string with a preset digit in the key in each bucket as a field key so as to store the field in the hash. The storage space is greatly optimized through combination of two modes of bucket dividing and sub-string storage interception of the keys stored in the buckets. 本发明公开了一种海量数据内存存储空间优化的方法及装置，其中方法包括获取预设加密方式得到密文；将各个所述密文的key值分配到预设的桶中；截取每个桶里key中预设位数的字符串作为field key，以对hash内部的filed进行存储。通过通过分桶，以及对桶内存储的key进行截取子串存储两种方式结合将大大的优化存储空间。