For larger files, the server should stream data rather than loading it all into memory to prevent crashes.
For smaller datasets, you can use the Blob API to create the file in the browser's memory and trigger a click on a hidden download link. 3. Automation (CLI/Batch) If this is for an internal tool or script:
How to manage large file downloads in the front end? : r/reactjs
A backend logic to fetch only the first 12,345 entries.
A button or command that initiates the request.
Use a buffered writer to append each record to a temporary text file or stream it directly to the response. 2. Frontend Interaction