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Questions tagged [cedar]

**'Celadon Cedar'** is the newest runtime stack for apps hosted on heroku.com. It is a polyglot platform, supporting multiple languages including Ruby, Python, Java, and Clojure.

'Celadon Cedar' is the newest runtime stack for apps hosted on heroku.com. It is a polyglot platform, supporting multiple languages including Ruby, Python, Java, and Clojure.

Cedar has several improvements over Heroku's earlier stacks:

  • It uses the process model to declare, manage, and run processes across a distributed environment
  • Different types of processes can to scale at different rates to meet demand
  • Aggregate logs and process transparency give users improved process visibility into app behaviour
  • Increased user control over app releases
  • Language support is implemented through modular, customizable buildpacks, allowing developers to add support for any language or framework they need

More information:

For general questions about heroku itself, see the tag.

117 questions
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Error in SendGrid on Heroku cedar stack

when I try to send an email via sendgrid on heroku cedar stack, I got an following error : ArgumentError (SMTP-AUTH requested but missing user name): my settings in /environments/staging.rb are : config.action_mailer.delivery_method = :smtp …
jwako
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Load on Heroku Instance seen in heroku run top

When I run heroku run top on my server I see a very high load, currently 36.37 I realise this is probably not the dyno that runs the app, but it does seem very high to me, does this explain poor performance in heroku from time to…
Robin
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Get FreeTDS working on Heroku Cedar Stack

I'm trying to deploy my Rails app to Heroku. I'm using Postgres, but in my database.yml I've also added a définition to access a remote sql server. In my Gemfile : gem 'tiny_tds', '0.5.1' In a model : establish_connection :my_sqlserver This is…
fro_oo
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heroku/cedar javascript not working

Somehow can't get javascript to run: Am trying to use rails 3.2.2, Heroku, Cedar stack. The application works fine locally, and seems to be deploying fine to Heroku, but the javascript refuses to run. this thread seemed to cover a similar question…
Arby Wabd
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How to optimize a Rails application on the Heroku Cedar stack?

Which gem do you install or which configuration do you change to optimize your Ruby on Rails applications on the Cedar stack of Heroku? Like adding Rack::Deflater...
Camille
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heroku godaddy domain java stack SSL setup

I'm trying to set up SSL for my heroku java app. I've followed http://devcenter.heroku.com/articles/ssl to setup SSL at secure.mydomain.com. Everything works great if I do https://secure.mydomain.com. But, 1) How do I forward all http traffic to…
Kiran Gollu
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How to install python module on Heroku cedar stack with Rails

We have a rails app running on the Heroku Cedar stack, and we have a need for an external python module, namely 'pyPdf'. Unfortunately it is not one of the pre-installed python modules. Is there a way to install python modules on the Cedar stack?…
Bastien
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For rails3, cedar stack or bamboo stack?

I need to create an application on heroku, But I am confused in selecting a better stack. For rail3.1 application, which heroku stack is better in terms of caching, speed and assets pipeline ???
Hardik Joshi
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Heroku cedar stack, thin and eventmachine

Do Heroku Cedar stack apps require thin and eventmachine in Gemfile? gem 'thin' gem 'eventmahine' What about versions? On other stacks they were installed automatically?
WHITECOLOR
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Heroku Cedar Rails 3.1 db:migrate Failing

I'm a first-time heroku, first-time postgres newbie and am having some difficulties deploying to heroku. My app is working fine on my machine but I get a status=500 when I try to access myapp.heroku.com. My steps thus far: $ lunchy start postgres $…
Vlad Ivanovic
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Caching with Cedar/Memcache/Rails 3.1

So I have been trying to get caching to work on my private website, which basically just serves static stuff with little dynamic stuff in it. Since I am going to deply to Heroku Cedar, I have to go with Memcache instead of Varnish. However, I do not…
nambrot
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Heroku error on trying to redeploy old app

I'm trying to redeploy this app https://github.com/Arepo/rails-blog on Heroku, which I haven't touched in a couple of years. I had a warning that I needed to update Cedar-14, so I went through the Upgrading an app steps here But when I input git…
Arepo
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Using Heroku cedar 14 stack as a Docker image

Recently I had my application running on cedar-14 stack in Heroku But since End-of-life window has begun and builds won't be available, I decided to use Docker, so Heroku will host Docker container with my application on cedar-14 stack as base…
Arty Dev
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Problems using Pip Install on Cedar inside a virtual environment

I having problems trying to install some packages using virtualenv on Cedar. I am following the directions found on https://docs.computecanada.ca/wiki/Python but however I keep running into one of two problems: unable to load python 3.7, or able to…
patrick7
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Why did get a nil when I test my custom view's subview in IOS(Objective-C)?

I want to test a custom view and when I test the subview of my custom view,I get a nil. This is the init code of my custom view -(instancetype)init { self = [super init]; if(self){ self = [[[NSBundle mainBundle] loadNibNamed:@"ExistAccountView"…
Dave Luo
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