Django on Heroku running with Celery | Hacker News Reader

Django on Heroku running with Celery

gist.github.com

83 pointsjimmydo40 comments

Heroku, AppHosted, DotCloud, ep.io, Gondor.io, DjangoZoom, Google App Engine.

Looks like the market for "push-hosting" django (suddenly?) increased much more than that existed for ruby frameworks.

AFAI am concerned, WebFaction, Linode, Slicehost, EC2 more than addressed what I wanted for a while.

Not that I don't like these or that they don't make my life simpler- They very much do. But is there room for so many? Do I just forget the Apache VirtualHost config details, as I may never need that again?

All the ones that support Django out of the box, are all in private beta I believe. So the market is starting to warm up to Django, but still not open for sale. Hopefully they all get through private beta and release, because competition is good for the market.

Except one or two, all of them are available for general public.

I feel like the title of this post would make someone over the age of fifty's head explode.

Head check: intact.

Thanks for your concern. :)

You may win the award for "best comment I've seen all day", and today has just started.

Or it could be a long lost Beatles song

Heroku in the Celreeee with Djangossss ...

I am the Python, goo goo g'joob

hahaha!!

I thought Heroku only suppoted Ruby and node.js. Can someone explain what is going on here? Does it run arbitary executables, but it handles Ruby in some more powerful way?

Heroku introduced a new stack that can "Run Anything":

http://www.heroku.com/#run_anything

http://devcenter.heroku.com/articles/cedar

http://news.ycombinator.com/item?id=2602728

Only http traffic is routed to your web processes so a different protocol (I don't know, IRC) won't be routable to one of your deployed processes, correct?

Also, how much RAM can a process use? What happens if I run Redis and fill it up with "a lot" of data?

how much RAM can a process use? What happens if I run Redis and fill it up with "a lot" of data?

From http://devcenter.heroku.com/articles/how-much-memory-does-a-... : Each dyno has 300MB of memory. If your process uses more than 300MB, the system will automatically kill your dyno and insert an entry into your logs.

Are there any drawbacks to this? I've been looking for a "Heroku for Django" for a few months and I just started using Google App Engine to get some of what I want. I'll go ahead and try this if it works well.

The [good / bad] news for you is: you [won't have to / can't] use the AppEngine High Replication Datastore.

It's also worth mentioning that unlike AppEngine the Heroku stack is a unix based environment (call "heroku run bash" and boom, you have shell access) and its components are all open sourced, so it should be relatively easy to move from there to a VPS if you ever need to.

Other than that, Heroku comes from multiple years of supporting Ruby (and some Node.js), their main page still states "Agile deployment for Ruby and Node.js", there's a lot of Rails/Sinatra/Rack specific stuff in their docs, and the Heroku command line tool is a Ruby Gem. In other words, this is not an "Heroku for Django", like Djangy was, it's become more like an "Heroku for anything, with a strong culture of Ruby", and IMO that's extremely exciting: we're talking about access to multiple languages and tools on the same easy-to-use cloud.

That is pretty exciting. I moved to App Engine from EC2 because I didn't want to spend that much time managing the stack. I'm going to go try Heroku now.

If you like the idea of "Heroku for anything", I encourage you to try the original: dotCloud has been running a similar platform for almost a year now.

We're flattered to see everyone shift gear and try our approach. But we like being one generation ahead - and we have a few announcements up our sleeve, too.

Dotcloud looks very interesting, but to me it's hard to consider next to strong competitors that have established their pricing... That said I'm very looking forward to see the dotcloud pricing announced.

Hi Steph, I just dropped you an email with good news :)

dotcloud (http://www.dotcloud.com/) has been my go-to django (and everything) hosting. They seem to hand out invites pretty quickly, esp if you tweet them (http://docs.dotcloud.com/faq/#i-need-a-beta-invite-right-now).

I signed up for all the betas of django hosting places a while ago and dotcloud was the only one I heard from. I'm pretty sure they're YC too.

If you want a dedicated cloud hosting platform that works really well with Django you could do worse than try http://www.ep.io/ (currently invite only, but really good service).

Yes, I saw that a week ago and signed up for an invite. People seem to be happy with it from what I've seen on StackOverflow and other sites.

Has anybody tried running numpy? If it's got numpy then I think I have found my new hosting solution for my upcoming project at work.

Slight OT: Is it just me or non-Ruby/NodeJS no longer works on Cedar stack?

           Cleaning up...
    -----> Discovering process types
     !     Heroku push rejected due to an unrecognized error.
     !     We've been notified, see http://support.heroku.com if the problem persists

More info: I'm running exactly what's on this Gist.

INSTALLED_APPS = INSTALLED_APPS + (...) can be rewritten as:

INSTALLED_APPS += (...)

No?

Yep. It could be argued that the first is more readable though.

Personally, I find:

  x += 2

Easier to read then:

  x = x + 2

For many reasons.. but mainly:

  1) The first statement basically says: Add 2 to x, while the second says: Take x, add 2 and add that to x.. Which is one more step. 

  2) When a variable is repeated multiple time, I always read the line multiple time to make sure there is no error. For instance, in english "On the screen, there there is a xyz". I'll stop and read that sentence a couple of time to try to understand it.. and then realize it's an error. Likewise, when I see x = x + 2, I think "Is it a mistake?" I.e. did the author wanted to write: y = x + 2.. if not, why does he repeat himself?

However, I'm interested in knowing in what you find it more readable :) ?

Looking a bit closer:

1) "Take x, add 2 and add that to x" the second add should be "set x to that". "Which is one more step." It is the same amount of steps, just a difference in how it is represented to the end user.

2) Hmm, never thought about that type of connection before. In my experience I had many years of "x = x + 1" in both Algebra class and when first exposed to Basic programing. I didn't encounter C (first exposure to extended operators) for at least another decade.

Whenever I see such an assignment statement I visualize this in my head...

  x = x + 1
  x = 5 + 1
  x = --> 6 <--  (woosh)
  x <---6  (woosh)
 (6)  (thud)

It's merely more familiar to the average person. I'm not against the first form and use it a lot. See my comment to llamda below for more details.

For who? I don't think anybody who actually writes code is going to be confused by +=

No need to race to the bottom any faster guys.

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