You are load testing your server application and encounter intermittent 5xx and 429 HTTP responses. What action should you take to mitigate these failed responses?

To mitigate intermittent 5xx and 429 HTTP responses during load testing of your server application, limiting the upload rate from your application clients is a strategic approach. This action helps in managing the overall request load and ensures that your server or backend services do not become overwhelmed.

The presence of 5xx status codes typically indicates server errors, suggesting that the server is unable to handle the incoming requests. On the other hand, a 429 status code indicates too many requests, meaning that the server has received more requests than it can process in a given period. By controlling the rate at which uploads are sent from clients, you can prevent hitting a threshold that leads to these errors. This approach allows for gradual scaling and contributes to more stable performance while interacting with the Storage service, thus reducing error rates and improving overall system reliability.

Distributing uploads across multiple storage buckets, utilizing the XML API instead of the JSON API, or passing the response codes back to clients may not directly address the root cause of the load issues. While those alternatives might have their benefits in specific contexts, they do not effectively manage or control the rate at which requests are made to the server, which is essential in addressing the issues represented by the HTTP responses encountered during load testing.