I am interested in migrating a medium sized app to Heroku but one potential roadblock is that a key functionality of our product relies on Postgres’ logical decoding. Is it possible to use logical decoding with Heroku Postgres? If not what would you recommend?
Heroku Postgres does not currently support logical decoding. Additionally, it does not provide access to the replication or superuser so there is not a good option for streaming changes out of your Postgres database, aside from Heroku Postgres followers.
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Can someone explain me why we need the Atlas?
If I have Heroku which gives an easier access to cloud (PaaS), then why we need MongoDB Atlas?
Some sources say that we can connect Heroku with Atlas, but why we need that? And can please someone explain me the difference, because it seems I do not understand it completely.
Will be very thankful to everyone. Articles will also be good.
Heroku is a PAAS where you can deploy your applications. Multiple languages are supported and the development experience is great (deploy from Git or using Docker, plenty of examples and documentation).
Typically your application needs a data store to persist the data, Heroku offers few options (ie Postgres) but no more MongoDB. An alternative is to use Atlas where you can define your MongoDB cluster and databases.
Both Heroku and Atlas have a free-tier so you can run both the application and the database without cost. As your database grows you might need to buy a different subscription, this applies to Heroku too if you require more resources or for example no downtime (Heroku Free tier sends the Dyno to sleep after 30 min inactivity).
A good article to use Heroku with Atlas is Detaching from mLab
I am using mLab MongoDB add-on free version in Heroku.
I want to make two sets of data bases(development, production). But it does not allow me to make multiple databases. Any possible solution to fix this problem?
The paid solutions seem to only increase store capacity and other few features related to monitoring
I have sent an email to mLab. The response is that it is not possible to make multiple databases with a single mLab add-on in heroku. Instead what I can do is add a completely new mLab add-on. But this would be cost inefficient and data cannot be transferred directly from one database to another.
The other solution they suggested, is simply to make mLab database using mLab account itself instead of heroku. Then I would be able to make multiple database in a single instance with a better pricing.
If I am planning to deploy a Django + Postgres site and I would like to do so to a PaaS, what are the major differences between what Heroku and Elastic Beanstalk will offer me?
What are features that one has but the other does not?
How does the experience of deploying and maintaining sites on the two platforms compare?
I have recently migrated an application from Heroku to Amazon EB and am missing Heroku already :)
Application wise, everything is the same. The major differences regard pricing, performance and ease of operation.
1. Price - Amazon will beat Heroku for nearly anything above two servers.
2. Performance - again, Amazon gives you the flexibility to deploy your app on a RAM monster, speeding things up significantly
3. Operation - that's the tricky part where Heroku wins big time.
Operations wise, Heroku is extremely easy to configure and maintain, while in Amazon you need to dig deep into the Elastic Beanstalk deploy scripts in order to customize them for your application. Deploying isn't a breeze as well, as EB CLI isn't as easy to use as Heroku and forces you to keep thinking about the underlying infrastructure (region, vpc, load balancing, security, etc).
I'd stick with Heroku if you're happy with price/performance and move to Amazon only if you really want these parameters notched up.
I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
Heroku is a cloud platform as a service. That means you do not have to worry about infrastructure; you just focus on your application.
In addition to what Jonny said, there are a few features of Heroku:
Instant Deployment with Git push - build of your application is performed by Heroku using your build scripts
Plenty of Add-on resources (applications, databases etc.)
Processes scaling - independent scaling for each component of your app without affecting functionality and performance
Isolation - each process (aka dyno) is completely isolated from each other
Full Logging and Visibility - easy access to all logging output from every component of your app and each process (dyno)
Heroku provides very well written tutorial which allows you to start in minutes. Also they provide first 750 computation hours free of charge which means you can have one processes (aka Dyno) at no cost. Also performance is very good e.g. simple web application written in node.js can handle around 60 - 70 requests per second.
Heroku competitors are:
OpenShift by Red Hat
Windows Azure
Amazon Web Services
Google App Engine
VMware
HP Cloud Services
Force.com
It's a cloud-based, scalable server solution that allows you to easily manage the deployment of your Rails (or other) applications provided you subscribe to a number of conventions (e.g. Postgres as the database, no writing to the filesystem).
Thus you can easily scale as your application grows by bettering your database and increasing the number of dynos (Rails instances) and workers.
It doesn't help you avoid using servers, you will need some understanding of server management to effectively debug problems with your platform/app combination. However, while it is comparatively expensive (i.e. per instance when compared to renting a slice on Slicehost or something), there is a free account and it's a rough trade off between whether it's more cost effective to pay someone to build your own solution or take the extra expense.
Heroku Basically provides with webspace to upload your app
If you are uploading a Rails app then you can follow this tutorial
https://github.com/mrkushjain/herokuapp
As I see it, it is a scalable administrated web hosting service, ready to grow in any sense so you don't have to worry about it.
It's not useful for a normal PHP web application, because there are plenty of web hosting services with ftp over there for a simple web without scalability needs, but if you need something bigger Heroku or something similar is what you need.
It is exposed as a service via a command line tool so you can write scripts to automate your deployments. Anyway it is pretty similar to other web hosting services with Git enabled, but Heroku makes it simpler.
That's its thing, to make the administration stuff simpler to you, so it saves you time. But I'm not sure, as I'm just starting with it!
A nice introduction of how it works in the official documentation is:
https://devcenter.heroku.com/articles/how-heroku-works
Per DZone: https://dzone.com/articles/heroku-or-amazon-web-services-which-is-best-for-your-startup
Heroku is a Platform as a Service (PaaS) product based on AWS, and is vastly different from Elastic Compute Cloud. It’s very important to differentiate ‘Infrastructure as a Service’ and ‘Platform as a Service’ solutions as we consider deploying and supporting our application using these two solutions.
Heroku is way simpler to use than AWS Elastic Compute Cloud. Perhaps it’s even too simple. But there’s a good reason for this simplicity. The Heroku platform equips us with a ready runtime environment and application servers. Plus, we benefit from seamless integration with various development instruments, a pre-installed operating system, and redundant servers.
Therefore, with Heroku, we don’t need to think about infrastructure management, unlike with AWS EC2. We only need to choose a subscription plan and change our plan when necessary.
That article does a good job explaining the differences between Heroku and AWS but it looks like you can choose other iaas (infrastructure) providers other than AWS. So ultimately Heroku seems to just simplify the process of using a cloud provider but at a cost.
Considering you're a startup with no funds for own server farm. Which existing solution can give you a peace of mind that any sudden increase in traffic won't bring everything down.
I know it's not just up to hardware, so we plan to have at least a load balancer, memcache and few db servers.
Is it possible to have a setup on AWS that would automatically add instances and bandwidth if the traffic increases?
What other advice you could give to deployment noobs? Thanks.
ps: I apologize in advance if a question is too broad or reflects inexperience on mentioned topics, but that's why I ask.
Heroku. Because you're a start-up, keep things lean and it doesn't get leaner than almost free (with 1 dyno + small shared DB). Spend time building your product, not on the infrastructure. You don't want to be installing patches when you should be talking to customers. Heroku is also flexible and allows you to scale up 'dynos' as your traffic increases so no worries about growing there. Heroku won't scale automatically for you, though, so do your own server monitoring. Heroku add-ons are also nice.
Recently we have done a very good comparison between AWS and Heroku and we decided to move to Heroku, here is the detail of this http://www.confiz.com/blog/tech-session/selecting-the-right-cloud-platform/
If you're on Python, you can try Google App Engine.
Migrating the Python app from one platform to another isn't too difficult once you get the past the learning curve as to what features is (not) available. GAE offers datastore, memcache, blobstore plus a few other goodies like dJango and Jinja (templating). Worth checking the Python start page and it didn't take me long to integrate it into Facebook and Dropbox too.
Stay away from Heroku. You can get EC2 for free for a year from Amazon. Scaling up heroku is extremely costly. Their pricing tends to be unclear and their customer service in general sucks.
BitNami for Amazon EC2 includes ready-to-run versions of Apache, MySQL, PostgreSQL, SQLite, Python, Django, Git, their required dependencies, and much more. It can be deployed via all-in-one free native installers, virtual machines and Cloud Images. maybe worth checking out.
My personal experience is that you should generally start with Heroku. Get your app out in the wild and find that product/market-fit or some type of traction. You will know you are going somewhere because customers will cause scaling issues. In this case, Heroku will allow you to scale with very little overhead. And for some time, this scaling will not hit you in the wallet.
Jump to AWS when you are ready. When will you be ready? When you have enough pain, in the wallet, where you need more control over the stack. You can hire a AWS devops type or learn about it, yourself.
Both Heroku and AWS have auto-scaling solutions, but whereas Heroku has a fairly flat learning curve -- that is what you are paying for -- AWS can get broad and steep fairly quickly. A Udemy AWS course or any of the hundred other online resources will get your started down building a robust AWS architecture.
Lastly, while performance should not be your primary concern, make sure that you are using best practices in your code. Your first user should not bring your system to a crawl. And AWS will not help if she does.
Hope this helps in some way.
This has been my experience. My saas start kits are built to deploy to Heroku out of the box for this reason. However, the start kits are also containerized. I know that you spoke of AWS explicitly, but with containers you can be infrastructure agnostic. This is worth considering!
Ted [at] https://stacksimple.io
Check out this blog series I'm starting because I found Heroku to not be scalable at all from a financial perspective compared to EC2 and Digital Ocean. Going to be showing how to put a Ruby application on Digital Ocean using Docker, which allows you the same flexibility and ability to scale up and down very quickly https://medium.com/#karimbutt/weaning-off-heroku-part-1-b7f123ae855f
It greatly depeneds whether you're looking for a PaaS, IaaS or SaaS, and what is the language you using.
AWS is a IAAS/PAAS with multiple components and layers.
Heroku is a PAAS supporting multiple languages, most notably Java, Ruby and Node.js
Other platforms come into play depending on your needs, you might want to take a look at this comparison as well: https://dictativ.com/compare/paas