title

wEngine - Architecture

Subsystems

Web application

Application running on a server with Microsoft .NET Core

Server requirements

.NET runtime
IIS (Windows)
Apache or Nginx (Linux)

Content Delivery Network (CDN)

A web application, serving the web application as a CDN, uses .NET Core Web API

Server requirements

.NET runtime
IIS (Windows)
Apache or Nginx (Linux)

Search engine

Is based on Solr, an enterprise search platform. The web application uses the search engine for searching, sorting and retrieving information. A separate service – DatabaseSync will keep the search engine index updated and synchronized with the web application database.

Server requirements

JAVA runtime
Solr
DatabaseSync, Port 8983 (or other) must be opened in firewall

Design philosophy

Eric Raymond’s recommendations - en.wikipedia.org/wiki/Unix_philosophy

Layers (in web application)

Presentation	Description and Responsibility
MVC View	Contains presentation logic, Creates the GUI based on the MVC model provided by the MVC controller
jQuery	Javascript library that improves compability between browser implementation of the DOM. Is also used by many javascript frameworks like Bootstrap (see below)
Bootstrap	Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web

Business logic	Description and Responsibility
MVC Controller	Receives notification from the system to Create new Page(html) by http get/post Update Part of a Page(html) by asynchronous http get/post The controller will do this by routing and creating model(s) and views from business rules
Web API	Receives notification from the system to Send/recive data(JSON) to/from Web-browser by asynchronous http get/post The Web API specific controllers will create these data structures by business rules and repositories
MVC Model	Creates the state of the application from input received from MVC controller. A singleton pattern, a static function Load(controller parameters...) is used for both creating the model and passing input from MVC controller. Singleton load function initialize the model by using parameters passed by controller, applying business rules and fetching domain model data in the form of Data Transfer Objects from the repositories of the Data layer

Data Access Layer	Description and Responsibility
Repositories	Repositories are responsible for CRUD operations on database Transforming the data (DTO), received from the Assembler, by business rules
Assembler	Our highly optimized technology for database access. Is responsible for Fetching the data requested by the repositories from a Microsoft SQL Server/PostgreSQL database by optimized stored procedures Transforming the data stream into data transfer objects (DTO) requested by the repositories
Database	Data storage for the system. Responsible for Storing data in a normalized and optimized way Containing stored procedures for CRUD operations

Tiers

Web browser	Technology	Description and Responsibility
Presentation	Html 5, CSS 3, SVG, Ecmascript	Modern web browsers can act as efficient virtual machines (VM) for applications. wEngine can, by leverage a modern VM functionality, be used to create interactive and responsive web applications. wEngine requires modern browsers – old browser such as Internet Explorer 9 or older is not supported due to their limitations
Transport / Communication	HTTP(s), Ajax, Cors, WebSockets(optional)	Communicates with Web server, Search server, Content server. By leverage the new Html 5 communication API:s, wEngine supports advanced functionality and provides high performance. All of this achieves an improved end-user experience

Web hosting	Technology	Description and Responsibility
Web-server	IIS / Nginx + .net Runtime	Server Applications that hosts the web application. The web application is using the .net runtime which performance is vastly superior to script-based solutions like PHP, Phyton and Ruby
Transport / Communication	HTTP(s), Ajax, database(TCP/IP)	Communicates with Client, Content-Server, Database-Server
Operating System	Windows Server / Linux	We support both Linux and Windows Server as hosting alternatives

Search Engine	Technology	Description and Responsibility
Application-server	SOLR + Java	Contains the wEngines search capabilities. SOLR is the market leading search engine and wEngine's implementation is highly optimized with multiple cores and direct Json-based asynchronous access by the web browser
Transport / Communication	HTTP(s), Json, Ajax, database(TCP/IP)	Communicates with Client, Database-Server and Webserver
Operating System	Windows Server / Linux	We support both Linux and Windows Server as hosting alternatives

CDN	Technology	Description and Responsibility
Web-server	IIS / Nginx + .net Runtime	Responsible to store and distribute files dynamically uploaded by users. Each image that is uploaded is processed for speed-optimization and quality
Transport / Communication	HTTP(s), Cors, Ajax	Communicates with Client, Content-Server and Webserver
Operating System	Windows Server / Linux	We support both Linux and Windows Server as hosting alternatives

Data Storage	Technology	Description and Responsibility
Database	SQL-Server / PostgreSQL	Storage for information used by wEngine. wEngine use stored procedures for security, performance and optimized network traffic.
Transport / Communication	database(TCP/IP)	Communicates with Webserver and Search-server
Operating System	Windows Server / Linux	We support both Linux and Windows Server as hosting alternatives

List of Third Party Software used in wEngine

Solr
Java
Windows Server / Linux
SQL Server / PostgreSQL
Windows + IIS / Linux + Nginx