I'm using MongoDB with mongo_mapper gem in Rails and project is big enough. Is there any way I can migrate data from Mongoid to Postgresql?
Migrating from mongodb to postgresql in rails
4.1k Views Asked by Aydar Omurbekov At
1
There are 1 best solutions below
Related Questions in RUBY-ON-RAILS
- Rails HABTM: Select everything a that a record 'has'
- Best way to make an HABTM association via console
- dynamically create an ical / ics file from a rails model
- Ruby destroy is not working? Or objects still present?
- NoMethodError: undefined method `update_average_rating' for nil:NilClass
- Select results where joined table contains records with an attribute, but without another
- Showing posts only created when boolean was true
- Ruby on rails and HAML - Print a hash with background color
- How can I monitor an endpoint's status with Ruby?
- How to create dynamic pages without form_for helper in Rails?
- Rails 4.2 jQuery loads only after refresh
- "Access Denied" - User's Permissions to S3 Bucket
- ActiveRecord, Rails 4: has_many :through with scoped conditions failure
- Rails - formatting a list of options
- Rails - Ajax do not work properly on production server
Related Questions in MONGODB
- Meteor MapReduce Package Error: A method named is already defined
- Token based authorization in nodejs/ExpressJs and Angular(Single Page Application)
- Big data with spatial queries/indexing
- How to recover from losing all your /data/db
- What are the benefits of using the fields option when querying in Meteor
- Node JS Async Response
- mongoose get property from nested schema after `group`
- What to use for subdocuments ID's in MongoDB?
- ORM Code First versa Database First in Production
- How to profile a Yii2 based API?
- get length of embedded document in mongoDB with jade
- Architecture: Multiple Mongo databases+connections vs multiple collections with Express
- Why are numbers being inserted into MongoDB incorrectly?
- hibernate ogm mongo db, how to get count of collection?
- C++ Mongodb driver, not working
Related Questions in POSTGRESQL
- Why does adding a JOIN completely modify the query planner behaviour?
- When dealing with databases, does adding a different table when we can use a simple hash a good thing?
- Aggregate and count in PostgreSQL
- Rails HABTM: Select everything a that a record 'has'
- Trigger using data from inserted row
- Select results where joined table contains records with an attribute, but without another
- DB candidate as CouchDB/Schema replacement
- How do I properly add data in SQLAlchemy?
- Postgres in Conda Environment (Ubuntu 14.04)
- How to customize the output of the Postgres Pseudo Encrypt function?
- Split a large query (2 days) into pieces to increase the speed in Postgres
- Why does pg_search prefix not work like I expect?
- extracting meta info from a table psql using information_schema
- How to query a table in the database and copy it's data into one one?
- Update a table using info from a second table and a condition from a third table in Postgresql
Related Questions in MONGOMAPPER
- Is write operations go to secondary when i set readpreference as secondary in mongodb?
- MongoDB query failing
- mongo_mapper or mongoid with rails4
- How to get sub documents value from following BSON Document
- Rails 3 Polymorphic Association between one MongoMapper model and one/many Active Record model/s
- Mongomapper: does "_id" field conflict with "id"?
- Efficient retrieval of large data sets in Mongo mapper?
- rails and mongodb
- Authlogic no credentials provided
- mongo_mapper custom data types for localization
- Including nested objects in JSON response, from MongoMapper objects
- MongoMapper and "join tables" with properties
- Rails 4 Authentication using Devise with MongoMapper
- Migrating from mongodb to postgresql in rails
- How to use mongo_mapper with rails 4?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
You should look into some of the automated migration/replication tools like MoSQL: https://stripe.com/blog/announcing-mosql
One risky strategy for this migration would be to convert your codebase to using postgres and all of your models, put your site into maintenance mode, migrate your databases, deploy the new code, and bring it back up. However, this requires significant downtime and development risk of bugs or data loss.
A safer, but much more involved strategy would be to setup automatic migration of data to a new database to sync up your databases. Then, every action in the application writes to both databases. After each transaction, you verify the data is in sync between both databases and read from Mongo. This allows you to fix errors as you find them and highlight any inconsistencies. Once you are no longer finding discrepancies, you can turn off writing to mongo and retire that database, remove the mongo models/code, and move on.