September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Heroku configuration
How does Heroku know how to execute the application?
Heroku knows how to execute the application by reading the instructions from a file named Procfile, located at the root of the project; the content is as follows:
web: server/target/universal/stage/bin/server -Dhttp.port=$PORT -Dconfig.file=server/conf/heroku.conf
The first indication in the line is the type of application. This can be anything. The web value is a special type, telling Heroku that this process only receives requests from HTTP.
The second part is the path to the executable. In fact, the SBT project creates this executable for us during the build process.
The last part is a list of properties for the Play application, namely
- -Dhttp.port, which sets the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.