Security: MD5 is considered insecure and should not be used for password storage or security-sensitive scenarios. It is recommended to use more secure hash algorithms such as SHA-256.
Input type: If the input is not a string, the function returns a random string.
Output format: Returns a 32-character hexadecimal string (lowercase).
Performance: For large amounts of data, MD5 computation may be slow, so it is recommended to use it in an async environment.