How does the Go Fiber framework handle large file uploads compared to other frameworks

1. Memory Management: The search results indicate that Fiber, being built on top of the Fasthttp library, reads the entire request body into memory before processing it. This can lead to memory issues when handling large file uploads, as the entire file needs to be loaded into memory at once.

2. Default Body Limit: Fiber has a default body limit of 4MB, which can be easily exceeded when uploading large files. To handle larger files, you need to explicitly increase the BodyLimit configuration option.

go
   app := fiber.New(fiber.Config{
       BodyLimit: 100 * 1024 * 1024, // 100MB
   })
   

3. Streaming vs. In-Memory: Frameworks like Gin and the standard Go net/http package are better suited for handling large file uploads, as they allow you to stream the file data directly from the request body to the destination (e.g., S3) without loading the entire file into memory.

go
   // Using the standard Go net/http package
   http.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) {
       file, _, err := r.FormFile("file")
       if err != nil {
           // Handle error
           return
       }
       defer file.Close()
       // Stream the file to S3 or other destination
       _, err = io.Copy(destination, file)
       if err != nil {
           // Handle error
           return
       }
   })
   

4. Minio SDK: The search results suggest using the Minio SDK, which provides better support for streaming large file uploads to S3 compared to the AWS SDK for Go used with Fiber.

go
   // Using the Minio SDK
   minioClient, err := minio.New(endpoint, accessKeyID, secretAccessKey, useSSL)
   if err != nil {
       // Handle error
       return
   }
   _, err = minioClient.PutObject(ctx, bucketName, objectName, file, fileSize, minio.PutObjectOptions{})
   if err != nil {
       // Handle error
       return
   }
   

In summary, while Fiber is a powerful and performant framework, it may not be the best choice for handling large file uploads due to its in-memory request handling approach. Frameworks like Gin or the standard Go net/http package, or using the Minio SDK directly, may be better suited for this use case, as they allow you to stream the file data without loading the entire file into memory.