You need to implement a feature allowing users to upload large files in your web application. How would you design the file upload process to optimize performance, handle interruptions, and ensure data integrity?

To design a file upload process that optimizes performance, handles interruptions, and ensures data integrity, you could follow these steps:

1. Chunking: Break down the large file into smaller chunks. This will allow the upload process to handle interruptions effectively. If the upload process is interrupted, you can resume the upload from the last successful chunk instead of starting over. This also optimizes performance as smaller data packets are easier to manage and process.

2. Concurrency: Implement concurrent uploads. This means that multiple chunks of the file are uploaded at the same time. This can significantly speed up the upload process.

3. Compression: Compress the file before uploading. This reduces the size of the file, which can improve upload speed. However, this might increase CPU usage on the client side, so it's a trade-off that needs to be considered.

4. Data Integrity: To ensure data integrity, generate a checksum for each chunk. A checksum is a unique value that is generated by a function that takes an input (or 'message') and returns a fixed size string of bytes. The checksum is sent along with each chunk. When the chunk is received by the server, the server generates a new checksum for the chunk and compares it with the received checksum. If they match, the chunk is accepted, otherwise it is rejected.

5. Error Handling: Implement robust error handling. If a chunk fails to upload, have a system in place to retry the upload. If it fails after several attempts, log the error and notify the user.

6. Progress Tracking: Provide feedback to the