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A Heroku web app using Compojure.

This generated project has a few basics set up beyond the bare Compojure defaults:


To start a local web server for development you can either eval the commented out forms at the bottom of web.clj from your editor or launch from the command line:

$ lein run -m chai.web

Initialize a git repository for your project.

$ git init
$ git add .
$ git commit -m "Initial commit."

You'll need the heroku toolbelt installed to manage the heroku side of your app. Once it's installed, get the app created:

$ heroku apps:create chaidanlik
Creating chaidanlink... done, stack is cedar |
Git remote heroku added

You can deploy the skeleton project immediately:

$ git push heroku master
Writing objects: 100% (13/13), 2.87 KiB, done.
Total 13 (delta 0), reused 0 (delta 0)

-----> Heroku receiving push
-----> Clojure app detected
-----> Installing Leiningen
       Downloading: leiningen-2.0.0-preview7-standalone.jar
-----> Launching... done, v3 deployed to Heroku

 * [new branch]      master -> master

It's live! Hit it with curl:

$ curl
["Hello" :from Heroku]

The cookie-backed session store needs a session secret configured for encryption:

$ heroku config:add SESSION_SECRET=$RANDOM_16_CHARS

Remote REPL

The devcenter article has a detailed explanation, but using the repl task from Leiningen 2.x lets you connect a REPL to a remote process over HTTP. The first step is setting up credentials:

$ heroku config:add REPL_USER=[...] REPL_PASSWORD=[...]

Then you can launch the REPL:

$ lein repl :connect http://$REPL_USER:$

Everything you enter will be evaluated remotely in the running dyno, which can be very useful for debugging or inspecting live data.


Copyright © 2012 FIXME

Distributed under the Eclipse Public License, the same as Clojure.