To optimize Cybersource API performance for high-traffic environments,
consider implementing rate limiting, caching responses, and using
asynchronous processing to handle requests efficiently. Additionally,
ensure robust error handling and monitor AP...
The error arises because rest Response. Headers contains duplicate Vary
keys. You can handle this by modifying the code to handle duplicate
keys, or by filtering the headers to ensure each key is unique before
creating the ApiResponse object.
