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Over 60 high-quality recipes covering debugging, security, performance, microservices, web frameworks, databases, deployment and more; rewritten for Node 4, 6, and 8.About This BookSecurity between Node.js and browser applications explained and applied in depthCutting edge techniques and tools for measuring and improving performanceContemporary techniques to create developer-ergonomic, readily-scalable production systemsWho This Book Is ForIf you have good knowledge of JavaScript and want to build fast, efficient, scalable client-server solutions, then this book is for you. Some experience with Node.js is assumed to get the most out of this book. If working from a beginner level Node Cookbook 2nd Edition is recommended as a primer for Node Cookbook 3rd Edition. What You Will LearnRapidly become proficient at debugging Node.js programsWrite and publish your own Node.js modulesBecome deeply acquainted with Node.js core API'sUse web frameworks such as Express, Hapi and Koa for accelerated web application developmentApply Node.js streams for low-footprint infinite-capacity data processingFast-track performance knowledge and optimization abilitiesCompare and contrast various persistence strategies, including database integrations with MongoDB, MySQL/MariaDB, Postgres, Redis, and LevelDBGrasp and apply critically essential security conceptsUnderstand how to use Node with best-of-breed deployment technologies: Docker, Kubernetes and AWSIn DetailThe principles of asynchronous event-driven programming are perfect for today's web, where efficient real-time applications and scalability are at the forefront. Server-side JavaScript has been here since the 90s but Node got it right.This edition is a complete rewrite of the original, and is targeted against Node 4, 6, and 8. It shows you how to build fast, efficient, and scalable client-server solutions using the latest versions of Node.Beginning with adopting debugging tips and tricks of the trade and learning how to write your o

Over 60 high-quality recipes covering debugging, security, performance, microservices, web frameworks, databases, deployment and more; rewritten for Node 4, 6, and 8.About This BookSecurity between Node.js and browser applications explained and applied in depthCutting edge techniques and tools for measuring and improving performanceContemporary techniques to create developer-ergonomic, readily-scalable production systemsWho This Book Is ForIf you have good knowledge of JavaScript and want to build fast, efficient, scalable client-server solutions, then this book is for you. Some experience with Node.js is assumed to get the most out of this book. If working from a beginner level Node Cookbook 2nd Edition is recommended as a primer for Node Cookbook 3rd Edition. What You Will LearnRapidly become proficient at debugging Node.js programsWrite and publish your own Node.js modulesBecome deeply acquainted with Node.js core API'sUse web frameworks such as Express, Hapi and Koa for accelerated web application developmentApply Node.js streams for low-footprint infinite-capacity data processingFast-track performance knowledge and optimization abilitiesCompare and contrast various persistence strategies, including database integrations with MongoDB, MySQL/MariaDB, Postgres, Redis, and LevelDBGrasp and apply critically essential security conceptsUnderstand how to use Node with best-of-breed deployment technologies: Docker, Kubernetes and AWSIn DetailThe principles of asynchronous event-driven programming are perfect for today's web, where efficient real-time applications and scalability are at the forefront. Server-side JavaScript has been here since the 90s but Node got it right.This edition is a complete rewrite of the original, and is targeted against Node 4, 6, and 8. It shows you how to build fast, efficient, and scalable client-server solutions using the latest versions of Node.Beginning with adopting debugging tips and tricks of the trade and learning how to write your o

The Internet of Things (IoT) is the next industrial revolution: we will interact naturally with real and virtual devices as a key part of our daily life. This technology shift is expected to be greater than the Web and Mobile combined. As extremely different technologies are needed to build connected devices, the Internet of Things field is a junction between electronics, telecommunications and software engineering. Internet of Things application development happens in silos, often using proprietary and closed communication protocols. There is the common belief that only if we can solve the interoperability problem we can have a real Internet of Things. After a deep analysis of the IoT protocols, we identified a set of primitives for IoT applications. We argue that each IoT protocol can be expressed in term of those primitives, thus solving the interoperability problem at the application protocol level. Moreover, the primitives are network and transport independent and make no assumption in that regard. This dissertation presents our implementation of an IoT platform: the Ponte project. Privacy issues follows the rise of the Internet of Things: it is clear that the IoT must ensure resilience to attacks, data authentication, access control and client privacy. We argue that it is not possible to solve the privacy issue without solving the interoperability problem: enforcing privacy rules implies the need to limit and filter the data delivery process. However, filtering data require knowledge of how the format and the semantics of the data: after an analysis of the possible data formats and representations for the IoT, we identify JSON-LD and the Semantic Web as the best solution for IoT applications. Then, this dissertation present our approach to increase the throughput of filtering semantic data by a factor of ten.

Questo lavoro di tesi ha avuto come scopo la preparazione di film dei semiconduttori organici Indaco e Chinacridone con metodi da soluzione, che sono i preferiti per la fabbricazione di dispositivi. Per la caratterizzazione dei film si è utilizzata la microscopia Raman nell’intervallo dei numeri d’onda delle vibrazioni reticolari, per identificare la natura della fase cristallina presente. Indaco e Chinacridone sono pigmenti fortemente insolubili in tutti i solventi organici, a causa della presenza dei forti legami a ponte di idrogeno intermolecolari che ne influenzano notevolmente le proprietà di stato solido. Questo rende difficile l’ottenimento di film omogenei per deposizione diretta di loro soluzioni. Per ovviare al problema, si è utilizzata una strategia di letteratura, che passa attraverso la preparazione di loro derivati solubili, con una reazione di protezione dei gruppi amminici presenti sulle molecole con gruppi termolabili (tBoc). Una volta depositato su substrato, il pigmento originale può essere rigenerato per riscaldamento del film. L’analisi Raman ha permesso di caratterizzare strutturalmente per la prima volta i film preparati con questa procedura. In particolare si è verificato che sui film di Indaco è sempre presente il polimorfo B, in accordo con quanto trovato nei film preparati con metodi di deposizione da vapore. Per quanto riguarda il Chinacridone invece dell’attesa β, la fase ottenuta è la metastabile α’, ottenibile in fase bulk solo in condizioni drastiche. In entrambi in casi si conferma la selettività del substrato verso un polimorfo specifico.

Un'idea che si è trasformata in progetto, chiamato "SmartApp", che consiste nella progettazione ed implementazione di un'applicazione iOS, la quale gestisce e facilita alcuni servizi utili all'utente in vacanza. Viene descritto il sistema di check-in all'interno di un esercizio, oltre ai vantaggi che l'utente può favorire tramite l'app, in correlazione ad alcune attività di digital marketing contemporanee.

Un'idea che si è trasformata in progetto, chiamato "SmartApp", che consiste nella progettazione ed implementazione di un'applicazione iOS, la quale gestisce e facilita alcuni servizi utili all'utente in vacanza. Viene descritto il sistema di check-in all'interno di un esercizio, oltre ai vantaggi che l'utente può favorire tramite l'app, in correlazione ad alcune attività di digital marketing contemporanee.