netflix/ember-batch-request

Ember-batch-request is a tool that helps web applications send multiple data changes to a server all at once, instead of making a separate network request for every single change. It was built at Netflix for apps using the Ember framework and a Ruby on Rails backend. Normally, if a user edits ten records in an app, the app might send ten separate requests to the server, one after another. That can be slow and put unnecessary load on the network. This tool bundles them together so the app sends just one request, and the server processes them in parallel or sequentially. The app then gets back a single response containing both the successful results and any errors. A concrete use case: a project management tool where a user reassigns fifty tasks at once. Instead of firing off fifty individual save requests, the app sends one batch request and handles all the results together. The tool offers three main operations, batchCreate, batchUpdate, and batchDelete, each taking an array of records. You can also tell it to skip updating the local data cache, which is useful when you're doing bulk operations and don't need the app's local state to reflect every intermediate change. It relies on a companion Rails middleware (hosted separately) that actually processes the batch on the server side, so both the frontend and backend pieces need to be in place. Configuration is straightforward, you set the API namespace and batch URL in the app's environment file. The README notes that it currently works with the JSON API spec, and that store updates on create operations are still a to-do item. It's a fairly specialized tool, best suited for teams already building Ember apps with Rails backends who need to optimize bulk data operations.