I have 2 projects, 1 is rails project containing apis for Mobile application which database is in MongoDB and on opposite side other project is in spree which database is in postgres, So how might I synchronize both the databases? I want to make entries in both databases but at the same time. If rails api project get any entry in postgres database so, it would also make same entry into mongodb database.
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I had to migrate my database from MongoDB to PostgreSQL.
The inconvenient is that everytime I add modifications in my local database, I have to go through a backup file creation and import it on my Heroku postgreSQL.
I would like to reduce the steps.
Ideally I would like to have an online database so that I won't have to worry about data migration, like it was for MongoDB.
Is there any solution like this ?
I am building a WEB (PWA) application which needs to run offline and should sync data whenever network is available. Current technology stack is Postgresql and django.
For offline apps Pouch db and couch db seems to be the first choice. But how exactly postgresql database should be used with Pouch db and couch db? What should be architecture and which library I have use to sync postgresql data to user's device
I've brought up the mongodb-charts in my desktop and connected it to my mongodb database. When I connect to the database through mongodb-charts I see all of my databases there except the one named "admin" which is the one I need and where my data is. Why is this happening? I am using the same user to connect studio 3T to my mongodb that I use to connect mongodb-charts to mongodb. The picture below shows that I have the database "admin" in mongodb when I connect through studio 3T, but can't see it when connecting by mongodb-charts to mongodb...
MongoDB Charts currently excludes databases which are considered internal:
admin: stores user & role information
config: stores sharded cluster and session metadata
local: stores local node data including the replication oplog
It is generally not recommend to use any of these databases for your own application data, however the MongoDB server (as at 4.2) does not prevent you from doing so.
If you have chosen to store application data in the admin database you will have to copy it to a new database in order to visualise in MongoDB Charts.
Ok, I'm a mobile developer trying to learn backend development.
I have two AWS RDS instances running postgresql. One for development and one for production.
The scenario is that the development data base is operated on. Create tables, add postgis, new relationships, what ever.
Now, I want to go put all those schema changes into the production database. Obviously I don't want to migrate development data to production, just the schema and db changes.
What do I do?
You can dump schema only:
pg_dump -s databasename > your_schema.sql
Then you restore the dumped schema from your_schema.sql by running on the production sever:
psql < your_schema.sql
Use user/pass options as needed.
It's possible to connect meteor manually to 2 or more databases in order to have a normal mongo that saves to the disk and a memory one like redis?
I'm asking because mongo has already full support from meteor and using it would be a lot easier than redis or other database
Right now, a Meteor server can only connect to one (and exactly one) Mongo database.
Redis support is on the roadmap, as is SQL support. Once Meteor supports multiple databases, you will have more options for how to set up your databases as well as dividing up your data between them. The only way to do what you are saying right now is to have your Meteor client connect to two different Meteor servers, and have one of them clear/dump the database regularly.
Source: discussions at Meteor's offices.