You can use the Upload to split files into chunks and send them asynchronously through multiple requests to the server.
If you use a
ChunkSettings parameter, the Upload enables you to specify the following options:
size—Determines the size of each chunk in bytes. The default value is
autoRetryAfter—Will attempt a failed chunk upload after the specified number of milliseconds. The default value is
maxAutoRetries—Determines the number of attempts to retry uploading a failed chunk. The default value is
resumable—Determines if the file upload process could be paused and later resumed. The default value is
If you use a
boolean parameter and set the value to
true, the component will apply the default
Along with the uploaded file chunk, the
FormData contains a JSON stringified
ChunkMetadata object with the following information:
contentType—The MIME type of the file.
fileName—The name of the file.
fileSize—The size of the file.
fileUid—The unique identifier of the file.
chunkIndex—The index of the currently uploaded chunk.
totalChunks—The total number of chunks that the file is split in.
You can use this information to reconstruct the original file on the backend.
By default all files are uploaded concurrently. In order to upload the files one by one, set the
concurrent option to
In order to upload the files without allowing the user to pause the upload process, set the
resumable option of the
ChunkSettings parameter to