Universal Relay Boilerplate (URB)

Boilerplate + examples for universal web application with React, Material-UI, Relay, GraphQL, JWT, Node.js, Apache Cassandra / Elassandra.

Project Overview.
Project Details.
Live demo I - uses in-memory persister.
Live demo II - uses Cassandra persister with Elassandra storage hosted on AWS micro instance.
Updates and Announcements @CodeFoundries and our blog.

Technologies used in Rebar and Universal Relay Boilerplate

For the most up to date list of technologies used please go to CodeFoundries.com.

Client side

Technology	Description
Express	Fast, unopinionated, minimalist web framework for Node.js
found	Extensible route-based routing for React applications.
JSS	JSS is a more powerful abstraction over CSS. It uses JavaScript as a language to describe styles in a declarative and maintainable way.
Material UI	Library for implementing Material Design in React. All user interface in this kit is built exclusively with Material UI components.
React	The best library for building modern browser-based and mobile UIs.
React Helmet	Reusable React component will manage all of your changes to the document head with support for document title, meta, link, script, and base tags.
React Native	React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and React.
Relay	A Javascript framework for building data-driven react applications.

Server side

Technology	Description
Apache Cassandra	The right choice when you need scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. Cassandra's support for replicating across multiple datacenters is best-in-class, providing lower latency for your users and the peace of mind of knowing that you can survive regional outages.
Data Loader	Generic utility to be used as part of your application's data fetching layer to provide a consistent API over various backends and reduce requests to those backends via batching and caching.
Elassandra	Elassandra Combines Cassandra And Elasticsearch In A Single Powerful Integrated Solution. URB works well with Elassandra.
Express GraphQL	A Node.js express library that allows the creation of GraphQL servers.
GraphQL	A query language for describing the capabilities and requirements of data models for client‐server applications.
JWT	JSON Web Tokens is an industry standard RFC 7519 method for representing claims securely between two parties.
Node.js	Event-driven, non-blocking I/O runtime based on JavaScript that is lightweight and efficient.

Development tools

Technology	Description
Babel	Transpiles ESX to ESX and performs relay transformations.
ESLint	A fully pluggable tool for identifying and reporting on patterns in JavaScript.
Flow	Static type checker, designed to find type errors in JavaScript programs.
GraphiQL	Graphical interactive in-browser GraphQL IDE. It allows to test the entire schema provided by GraphQL and can be an excellent tool for exploring the boilerplate, as well as a part of applications built on top of it.
Husky	Git hooks for eslint and prettier.
Prettier	Code formatter for javaScript.
React Hot Loader	Allows tweaking of React components in real time.
Webpack	Bundles npm packages, application Java Script, CSS, images, etc. into bundles.

Development Setup

For the most up to date setup instructions please go to the development setup instructions.

Initial Development Machine Setup

The setup is for OS X only. Prerequisites:

Install Node.js minimum version: 8.6.0.
Install Git minimum version: 5.0.0.
Install react-native-cli run npm install -g react-native-cli for app development with React Native only.
Install yarn run npm install -g yarn

Initial Project setup on local machine

In order to set up the project locally, perform the following steps:

Action	Notes
`git clone https://github.com/codefoundries/UniversalRelayBoilerplate`	Clone from github. Alternatively, you can download the source and update in some different way.
`yarn`	Install node packages.
`yarn setup-local`	Set up default configuration for running the boilerplate.

In addition to the above, you might want to specify JWT_SECRET by modifying the .env file. This step can be skipped if you do not care about the actual security and simply want to get the project running.

Running in development mode

In order to develop, three servers need to be started:

Web server.
Webpack server.
React Native packager.

This can be done with one command:

Start application HTTP and Webpack server: yarn dev.

To open the app:

Navigate to http://localhost:26005, or whatever IP was assigned when running yarn update-ip or after installation.

To run the iOS app in the emulator:

If the IP of your development machine has changed, run yarn update-ip.
Run react-native run-ios.

Configuring Cassandra locally

Install and configure Cassandra following the steps in Cassandra Installation on Mac.
Update the name of the database and the database server in /.env, or use the defaults. The defaults are:

CASSANDRA_CONNECTION_POINTS=localhost
CASSANDRA_KEYSPACE=urb

Configure to use Cassandra as default persister: yarn update-default-persister -- cassandra.
Create the database with yarn setup-database.

Further Details

We keep the information about the Universal Relay Boilerplate and Rebar updated on our website:

Architecture and Developer Resources

Unit Structure.

Architecture Details

The following documents explain in detail certain aspects of the architecture in depth:

Cassandra, meet Relay. Relay, meet Cassandra. Explanation of how Cassandra and Express GraphQL work together.
Isomorphic React Relay. Explains the approach to isomorphism taken in implementing the starter kit.
Isomorphic Server Variables. Using variables and settings in an isomorphic application - client rendering, server rendering.
SEO Using Isomorphic Application With Relay and Helmet. How to make SEO-friendly pages with React, Relay and Helmet.

Additional resources

The following documents, while not explicitly related to the boilerplate, can be useful while running and modifying the kit:

Cassandra Cheatsheet. List of common commands in CQL.
Cassandra Installation on Mac. Simple steps for setting up an instance of Cassandra for development.
Git Cheatsheet. Some useful git commands.
React Cheatsheet. Techniques for working with React used in the starter kit.
Where to Store Your JWTs - Cookies vs HTML5 Web Storage. Explains the advantages of using HTTP only cookies.