Uses gunicorn to serve firefly

[palnabarun]

Solves #6

• Uses gunicorn to run the firefly functions
• Uses nproc to populate the number of workers for gunicorn

[anandology]

Where is nprocs defined?

Did you try this on a server and made sure everything is working as expected? If not, could you please create a digital ocean server and try deploying an app?

I remember seeing an issue with installing gunicorn. It was already installed system wide, so it was using the system python instead of python in the virtualenv. Could you please check and confirm if it is indeed the case still?

[palnabarun]

nproc is a Linux utility. https://linux.die.net/man/1/nproc

Let me try on a server.

[palnabarun]

@anandology It works.

The function was run with two worker process using gunicorn on a droplet with 2 vCPU's.

[anandology]

Did you try with a third-party dependency? Try adding a library (say beautifulsoup4) and try importing it your app. I remember seeing an issue with that.

Also, the recommended workers is 2x to 4x the num procs.
http://docs.gunicorn.org/en/stable/settings.html#worker-processes