Topics matching eventEmitter/EventEmitter

Event-driven architecture

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Event-driven architecture (EDA) is a software architecture paradigm promoting the production, detection, consumption of, and reaction to events. An event can be defined as "a significant change in state".[1] For example, when a consumer purchases a car, the car's state changes from "for sale" to "sold". A car dealer's system architecture may treat this state change as an event whose occurrence can be made known to other applications within the architecture. From a formal perspective, what is produced, published, propagated, detected or consumed is a (typically asynchronous) message called the event notification, and not the event itself, which is the state change that triggered the message emission. Events do not travel, they just occur. However, the term event is often used metonymically to denote the notification message itself, which may lead to some confusion. This is due to Event-Driven architectures often being designed atop message-driven architectures, where such communication pattern requires one of

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Events (computing)

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Service-oriented (business computing)

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Software architecture

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Wakanda (software)

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Wakanda is a JavaScript platform[1] to develop and run web or mobile apps. It is based on open standards technologies including AngularJS, Ionic, Node.js, and TypeScript, and is supported on Linux (deployment only), Microsoft Windows, and macOS (Studio development). Platform Wakanda consists of a stack of tools and technologies: Wakanda Server Combines an object-relational database with a JavaScript server engine. Provides a Database Abstraction Layer for DB and Web Services, an auto-generated REST API, and security layer management. Wakanda Studio Is a desktop IDE with editors for designing the data model. It is shaped for Web and Mobile Apps. It provides building functionalities for mobile development (using Apache Cordova). Wakanda Client Connector Consists of a data provider to communicate with the server and front-end frameworks like AngularJS 1 & 2 and Ionic 1 & 2. History Starting in 2008 with the server, Wakanda was first presented at The Ajax Experience in 2009[2] and then the same y

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JavaScript web frameworks

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Software using the GNU AGPL license

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Software using the AGPL license

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Observable (Computing)

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An observable is one of the key components of reactive programming and was a proposed standard for managing asynchronous data in ECMAScript 2017. An observable can be defined as a collection where data arrives over time and thus opening up a channel for continuous asynchronous communication. The concept of observables is based on the classic observer design pattern, one or many observer's can subscribe to the observable and get notified whenever the observable is updated.[1] Composition with Reactive Operators The real power of observables comes from the array like operations that allow to transform, combine, manipulate and work with the sequence of items emitted by the observables.[2] The reactive operators allow to compose asynchronous sequences together in a declarative manner with all the efficiency benefits of callbacks but without the drawbacks of nesting callback handlers that are typically associated with asynchronous systems. Observables in Angular Angular makes extensive use of observables thro

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Programming language concepts

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Data types

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