Handling Large Payloads in a Spring Boot REST API Causes OutOfMemoryError
I'm relatively new to this, so bear with me. I'm working with an `OutOfMemoryError` when my Spring Boot REST API attempts to process large JSON payloads, specifically when the payload size exceeds 10 MB. I’ve set up my API to accept file uploads via a POST request, but it seems that the default configuration for message converters is not handling these large requests well. Here’s the relevant code snippet from my controller: ```java @RestController @RequestMapping("/api/files") public class FileUploadController { @PostMapping(value = "/upload", consumes = MediaType.APPLICATION_JSON_VALUE) public ResponseEntity<String> uploadFile(@RequestBody MyFilePayload payload) { // Process the payload return ResponseEntity.ok("File processed successfully"); } } ``` My `MyFilePayload` class looks like this: ```java public class MyFilePayload { private String fileName; private String fileData; // Base64 encoded file data // getters and setters } ``` I’ve tried increasing the JVM memory limits using `-Xmx512m` but that hasn’t resolved the scenario. I've also attempted to set `spring.http.multipart.max-file-size` and `spring.http.multipart.max-request-size` in `application.properties`: ```properties spring.http.multipart.max-file-size=15MB spring.http.multipart.max-request-size=15MB ``` Despite these configurations, I still get the following behavior when uploading a large file: ``` Exception in thread "http-nio-8080-exec-4" java.lang.OutOfMemoryError: Java heap space ``` Is there a best practice for handling large JSON payloads in Spring Boot? Should I consider streaming the file instead, or is there a different approach that I’m missing? Any help would be greatly appreciated! Could someone point me to the right documentation? I'm open to any suggestions.