How to query heroku database from salesforce (eg. via vf page) - heroku

can anyone help me on this? How can I achieve the following:
I need to set up a prototype integration with heroku from salesforce application. The need is to store a huge volume of data in a single heroku table and accessble from salesforce - eg: have a vf page in salesforce which queries the data in realtime

We're doing this. We use Heroku connect. We created a salesforce custom object and bidirectionally synched it using Heroku connect. You can then update the data on either side (in salesforce or in Heroku:PG).
But Heroku connect is expensive & priced on a # of synchs per month.
https://www.heroku.com/connect

Firstly, heroku is not a database. It is a PAAS.
My approach would have been :
- Create a heroku app(this is a link to create a node.js app) link
- After you create the app choose one of the datastore addons -> link if you want a SQL/Column oriented Database choose heroku postgres or ClearDB Mysql
- Secondly you actually need a webserver that exposes this database to you. I am thinking you would make this a webservice of some sort. You can build that in node.js. Here is something that will get you started or give you an idea - link

Related

How do I access Heroku Postgres DB from an external application using latest credentials?

I am building an ETL Application that needs to fetch data from Heroku Postgres DB a few times a day but the application is not running on Heroku, I am already able to do this, but using the current credentials, but heroku states that the credentials are not permanent and will be rotated from time to time.
What is the best way to do this, building a REST API on top of my app is not viable an option. I have seen that Heroku provides a config vars API which I could potentially use to fetch the DB credentials, but is there a simpler/cleaner way for implementing this, is enforcing permanent credentials an option?
There is no way to enforce it. And it's not a question of credentials, but a question of a database hostname. It's ec2.
Your safest bet is to always fetch current DATABASE_URL from your Heroku app. If you only need to do it 'a few times a day' this is not a problem.

Parse Server Migration, Swapping Client Code

As a server rookie and Parse user, I need to migrate and I intend to migrate to Parse Server, likely with Heroku and mLab.
Once I have clicked Migrate and Finalise in the Parse Dashboard, all data from my original Parse client code goes to the new database, right?
Once migrated, I can just push an update of my client code with the new Parse Server SDK pointing to the new server?
My main over ruling question is do I need to do any management on the client side, sending data to both servers? Or does Parse migration handle this?
I think you are mixing two different things. Read the tutorial
Simply
Step 1
You should move your data from Parse.com to self hosted database (mLab or mongoDB and more...), this step means that api.parse.com will use the "external" database but you will still use the code and server from Parse.com (when you send query to your app it goes to api.parse.com and than it access the database) - do this till end of April 2016
Step2 move from api.parse.com to your own instance of Parse server (the one you download from github or install it on heroku). You will need change you code in your app because it wont use api.parse.com fro mthis point... - till end of July 2016
On github the developers still say that it is not "production ready". You should only migrate your database and build the whole server later. You can read the discussion here

Addons for standalone heroku postgres database

Is it possible to attach addons to a standalone postgres database created at https://postgres.heroku.com ? I'm using the dev plan.
The database details page # https://postgres.heroku.com/databases/ shows "Heroku PG-Backups addon not attached" under Snapshots heading. I couldn't find a way to add the PG-Backups addon.
You probably need to take a look at the docs: https://devcenter.heroku.com/articles/pgbackups#provisioning-the-add-on

Running SQL queries through web interface on Heroku

I'm having trouble finding a web interface in Heroku to write SQL queries that can be created by app collaborators. I want to be able to query from a computer that doesn't have the heroku toolbelt installed as a collaborator.
Currently, I've been using the dataclips feature to do such a task, however it only allows the query to be modified by the app owner.
I'm not sure if I'm just misunderstanding how Heroku Dataclips works or just can't find a feature that allows collaborators to do such a task?
Collaborators in your application can also modify dataclips. However data clips are intended to be a 'data clip' and not a webUI onto your database. Giving anyone the ability to update your application/data requires them to be a collaborator. Heroku provides no other security role than that.

How manage multiple DB with MongoLab and Heroku?

I have a project hosted on Heroku using Mongolab for storing data (MongoDB).
I need to create 2 different DB instances: one for prod, one for dev.
Any idea how can I do and how I can tell my code which one to use?
Thanks
You should use a config variable (https://devcenter.heroku.com/articles/config-vars) to set the database url and then use the environment variable in your mongo initializer. Set one app to use the production url and a dev app to use the developer database url.

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