I need to be able to read the first (header) row in big xlsx file (350k x 12 cells, ~30MB) very fast in Ruby on Rails app.
I am using Roo gem at the moment, which is fine for smaller files. But for files this big it takes 3-4 minutes. Is there a way to do this in seconds?

```
xlsx = Roo::Spreadsheet.open(file_path)
sheet = xlsx.sheet(0)
header = sheet.row(1)

```

Edit:

* I tried other gems:
	+ rubyXL took several minutes
	+ creek was the fastest with 30s. But still unusable in controller

Edit2:

* I ended up using creek in a job and polling for the result in controller. Thx [Tom Lord](https://stackoverflow.com/users/1954610/tom-lord) for suggesting creek