[+] added import of functools and concurrent.futures libraries
[+] added lru_cache decorator to resolve_domain function to cache resolved DNS queries and improve performance
[+] modified resolve_domain function to use ThreadPoolExecutor from concurrent.futures to resolve DNS queries in parallel and improve performance
[+] added try-except block to handle exceptions in resolve_domain function
[+] added IP variable as list to store multiple IP addresses returned from socket.getaddrinfo function
[+] added print statement to display exception message in case of failure in resolving DNS queries.
[+] added import of functools and concurrent.futures libraries [+] added lru_cache decorator to resolve_domain function to cache resolved DNS queries and improve performance [+] modified resolve_domain function to use ThreadPoolExecutor from concurrent.futures to resolve DNS queries in parallel and improve performance [+] added try-except block to handle exceptions in resolve_domain function [+] added IP variable as list to store multiple IP addresses returned from socket.getaddrinfo function [+] added print statement to display exception message in case of failure in resolving DNS queries.