In this article, I want to show you how you can import data via a CSV file in a cloud based application. Spring controller In order to upload the CSV file, we will use an HTTP POST request with mime type as multipart/form-data . This request will be processed by my spring rest controller. I will get the file via the request parameter with type : MultipartFile . If the file content is not empty, I can extract the bytes and encode them as Base64 encoding using java 8 utility. In order to do the work outside of a user-facing request, I use the Google Cloud Platform (GCP) task queues mechanism. I can pass the encoded content as a task parameter. In parallel to the user facing request, a servlet will do the job with the specified parameter. Servlet Consumer The servlet is pretty straightforward : It extracts the encoded content It decode the encoded content It loads object list from the CSV content (jackson csv) It calls a service with the list of objects...