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Save a change in the source file and watch how all connected clients refresh automatically - browser tabs, mobile apps running in the simulator or on the physical device. Or, deploy a Meteor app (meteor deploy myapp) and all clients, plus all mobile apps with the server set to myapp.meteor.com will automatically reload to use the code changes. This drastically reduces the development cycle for apps in the App Store, where a regular update can wait for one to two weeks before being approved. See More
Meteor does not have support for server-side rendering of views, which is extremely helpful when it comes to SEO. However, there's a third-party server-side rendering package available for download. The Meteor team has also said that server-side rendering is on the roadmap. See More
A Meteor package can supply code for both the client and the server, and for mobile (Cordova) apps. For example, an autocomplete package supplies both server code to search a collection, and client code to display the results. The mdg:camera package supports the native camera if the app is built for mobile, or the HTML getUserMedia API to take pictures from the browser. See More
Meteor is built on top of Node.js and jQuery on the client. Express, Sails, Hapi and others are only server-side frameworks. Angular, React, Ember, Backbone are client-only libraries. Meteor is a full-stack framework, enabling the client and server to communicate data seamlessly, in real-time. You don't have to write any REST API or pub/sub code - Meteor takes care of it all automatically for you. See More
Meteor uses MongoDB, eliminating the choice among NoSQL databases. MongoDB is highly scalable - used to store petabytes of data and perform billions of operations daily at eBay, FIFA, Adobe, Craigslist, McAffee, Foursquare and others. However, any write locks the entire database. And no joins as in SQL. See More
The community behind Meteor has created a useful application for debugging Meteor apps that will automatically delete collections and display client-side documents, allow you to control subscriptions and lets you modify the documents. Meteor also has great support for server-side debugging, and WebStorm has also released full support for Meteor, including debugging capabilities. See More
Meteor also has an official testing framework called Velocity. Velocity enables real-time unit testing and integration with Jasmine or Mocha syntax. Tests are automatically run when code is saved and the testing result is indicated by a green or red dot in the upper right corner of the app. See More
While Meteor only supports MongoDB and Redis natively, MySQL support is on the roadmap, and there are 3rd-party packages that integrate MySQL reactively with Meteor to some extent, such as numtel:mysql. For reactive PostgreSQL support, there is numtel:pg. See More
The built-in Waterline is not well designed and is not suitable for production environments. Populating more than 1 level deep is a nightmare, there is no transaction support, new features/bug fixes are not implemented anywhere near a timely manner (the most requested feature 'deep populate' has been lingering in their github issues list for over a year and a half now). See More
This could be a huge plus, if you prefer to build your apps using the Model View Controller architecture. Using Sails.js you'll find the task of separating the business logic from the user interface and keeping the interactions between them in a separate layer, extremely easy. See More
Sails.js uses Waterline ORM at its backend which means you can store your data in any datastore that you like; all you have to do is make a change to the Waterline adapter, this will allow you to store your data in MySQL/Redis or any other kind of database. See More
Feather can sync events happening in two different Node processes or even servers in real-time. For example: an event happens in server A, the user connected to server B is instantly notified of that event. This is done through a central Redis or Mongo collection or through a websocket libraries' clustering library. See More
Feathers makes extensive use of modules (which are called Feathers services). These services work like ExpressJS middleware and can be used with app.use('/path', serviceObject). Services help developers keep their applications modular and as minimal as possible, without any unnecessary libraries or bloat. See More
Generators functions are of course a huge plus, but at the time Koa team has transcended generations functions and shifted towards async/await style programming. It has made the Koa best framework available in the market. See More
Like most of the Node.js's core, Mach is an asynchronous web framework too. Each response (of a request) can simply be hooked up to a then method so that its result or the reason for failure can be retrieved after the action is complete. If you're wondering what async operations are, here's a pretty good explanation for you See More
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