How long does the closure compiler default.js last for?

Question

I just minified a script using this tool and noticed the line "The code may also be accessed at default.js". Here's a pic:

How long will this link stay good for? Is it safe for me to use this in my script tags?

Answer 1

To use the optimized code, you can cut and paste it into your source file, download the file into your directory, or link to the file directly in your script tag ( for up to one hour ).

This is from the help page on the link you posted.