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Until recently, creating desktop-like applications in the browser meant using inefficient Ajax or Comet technologies to communicate with the server. With this practical guide, you’ll learn how to use WebSocket, a protocol that enables the client and server to communicate with each other on a single connection simultaneously. No more asynchronous communication or long polling!For developers with a good grasp of JavaScript (and perhaps Node.js), author Andrew Lombardi provides useful hands-on examples throughout the book to help you get up to speed with the WebSocket API. You’ll also learn how to use WebSocket with Transport Layer Security (TLS).Learn how to use WebSocket API events, messages, attributes, and methods within your client applicationBuild bi-directional chat applications on the client and server with WebSocket as the communication layerCreate a subprotocol over WebSocket for STOMP 1.0, the Simple Text Oriented Messaging ProtocolUse options for older browsers that don’t natively support WebSocketProtect your WebSocket application against various attack vectors with TLS and other toolsDebug applications by learning aspects of the WebSocket lifecycle

How can you take advantage of the Django framework to integrate complex client-side interactions and real-time features into your web applications? Through a series of rapid application development projects, this hands-on book shows experienced Django developers how to include REST APIs, WebSockets, and client-side MVC frameworks such as Backbone.js into new or existing projects.Learn how to make the most of Django’s decoupled design by choosing the components you need to build the lightweight applications you want. Once you finish this book, you’ll know how to build single-page applications that respond to interactions in real time. If you’re familiar with Python and JavaScript, you’re good to go.Learn a lightweight approach for starting a new Django projectBreak reusable applications into smaller services that communicate with one anotherCreate a static, rapid prototyping site as a scaffold for websites and applicationsBuild a REST API with django-rest-frameworkLearn how to use Django with the Backbone.js MVC frameworkCreate a single-page web application on top of your REST APIIntegrate real-time features with WebSockets and the Tornado networking libraryUse the book’s code-driven examples in your own projects

Build clustered and scalable Java-based, real-time applications using Spring Framework, Boot, WebSocket, Cassandra, Redis and RabbitMQ. In this book, you'll tie all this together with a dive-in case study, a real-time scalable chat application under differing scenarios. Pro Java Clustering and Scalability also discusses how to horizontally scale the WebSocket chat application using a full STOMP broker such as RabbitMQ.   Although this is a programming book, it also discusses many interesting infrastructure topics and tips about continuous delivery, Docker, NoSQL (Cassandra and Redis) and other related technologies. What You Will LearnHandle clustering and scalability using various open source Java, microservices, and web services tools and technologiesUse Spring Framework, Boot, and other Spring technologiesIntegrate with Redis, RabbitMQ, Cassandra, NoSQL, and much moreTest the case study code under various scenarios and stressesWho This Book Is ForExperienced Java developers with at least some prior experience with Java, especially Spring Framework, Boot and other tools, and some web services.

Befriedigend/Good: Durchschnittlich erhaltenes Buch bzw. Schutzumschlag mit Gebrauchsspuren, aber vollständigen Seiten. / Describes the average WORN book or dust jacket that has all the pages present.

Build clustered and scalable Java-based, real-time applications using Spring Framework, Boot, WebSocket, Cassandra, Redis and RabbitMQ. In this book, you'll tie all this together with a dive-in case study, a real-time scalable chat application under differing scenarios. Pro Java Clustering and Scalability also discusses how to horizontally scale the WebSocket chat application using a full STOMP broker such as RabbitMQ.   Although this is a programming book, it also discusses many interesting infrastructure topics and tips about continuous delivery, Docker, NoSQL (Cassandra and Redis) and other related technologies. What You Will LearnHandle clustering and scalability using various open source Java, microservices, and web services tools and technologiesUse Spring Framework, Boot, and other Spring technologiesIntegrate with Redis, RabbitMQ, Cassandra, NoSQL, and much moreTest the case study code under various scenarios and stressesWho This Book Is ForExperienced Java developers with at least some prior experience with Java, especially Spring Framework, Boot and other tools, and some web services.

Learn IoT programming using modem JavaScript on the ESP8266 and its more powerful successor, the ESP32. This book teaches you how to implement common connectivity features of IoT products using Wi-Fi, HTTP, WebSockets, MQTT, mDNS, and secure communications as well as how to work with common sensors and actuators over Digital, I2C, and SPI connections. You'll be introduced to graphics and building touch user interfaces for IoT applications with this new hardware generation that is powerful enough to handle color touch screens. Along the way, tips and techniques are given for using JavaScript to get the most from the memory and performance available on the latest IoT hardware. More importantly, you'll see how to apply JavaScript programming language to combine diverse technologies ― networking, user interfaces, sensors, actuators, and product logic ―into a reliable, maintainable application at the heart of an IoT product.IoT Development for ESP8266 and ESP32 with JavaScript introduces a new approach to IoT software development based on JavaScript and pairs it with a new generation of IoT hardware.What You'll LearnDevelop JavaScript applications for the ESP8266 and ESP32 microcontrollers using the Moddable SDKWrite modern JavaScript applications for microcontrollersWork with fundamental developer tools for ESP8266/ESP32 developmentGraphics and GUI development for IoT productsAdd asynchronous (non-blocking) network connections to embedded appsWho This Book Is ForPeople interested in getting started with JavaScript development on microcontrollers; JavaScript developers working on web or server-side applications; Embedded developers working with hardware 

Learn IoT programming using modem JavaScript on the ESP8266 and its more powerful successor, the ESP32. This book teaches you how to implement common connectivity features of IoT products using Wi-Fi, HTTP, WebSockets, MQTT, mDNS, and secure communications as well as how to work with common sensors and actuators over Digital, I2C, and SPI connections. You'll be introduced to graphics and building touch user interfaces for IoT applications with this new hardware generation that is powerful enough to handle color touch screens. Along the way, tips and techniques are given for using JavaScript to get the most from the memory and performance available on the latest IoT hardware. More importantly, you'll see how to apply JavaScript programming language to combine diverse technologies ― networking, user interfaces, sensors, actuators, and product logic ―into a reliable, maintainable application at the heart of an IoT product.IoT Development for ESP8266 and ESP32 with JavaScript introduces a new approach to IoT software development based on JavaScript and pairs it with a new generation of IoT hardware.What You'll LearnDevelop JavaScript applications for the ESP8266 and ESP32 microcontrollers using the Moddable SDKWrite modern JavaScript applications for microcontrollersWork with fundamental developer tools for ESP8266/ESP32 developmentGraphics and GUI development for IoT productsAdd asynchronous (non-blocking) network connections to embedded appsWho This Book Is ForPeople interested in getting started with JavaScript development on microcontrollers; JavaScript developers working on web or server-side applications; Embedded developers working with hardware