What is the underlying mechanism of the implementation …

Redis stores string data using byte arrays as the underlying implementation mechanism.

In Redis, strings are stored as arrays of bytes. Each byte has a corresponding index position that can be used to access and modify the byte data. The length of the string is equal to the length of the byte array.

In order to efficiently handle string operations, Redis utilizes pre-allocated buffers which allocate enough space based on the length of the strings to avoid frequent memory allocation and freeing operations. Additionally, Redis also records the length information of the strings for quick access.

The underlying implementation of strings in Redis is a simple and efficient data structure that allows for fast operations such as read, modify, and concatenate strings. Additionally, Redis also offers a variety of string manipulation commands, such as retrieving substrings and searching for specific characters, making it easy to handle and manipulate strings.