Howard Chu covers highlights of the LMDB design and discusses some of the internal improvements in slapd due to LMDB, as well as the impact of LMDB on other projects.
Todd Montgomery explores questions related to WebSocket, HTTP/2, CoAP, MQTT, XMPP, and the way these protocols change how services communicate.
Justin Mclean introduces the Open Source Hardware, its communication protocols (RF, ZigBee, WiFi, Bluetooth) and the software/API layer (HTTP, WebSockets, Can Bus, COAPI and MQTT) used.
Luca Dazi surveys the current solutions for remotely managing Java/OSGi IoT gateways over IoT protocols like MQTT and CoAP: Eclipse Kura, Lightweight M2M (LWM2M) protocol, and Eclipse Leshan.
Benjamin Cabé provides concrete examples of how to build end-to-end solutions with the Eclipse IoT Java stack and projects such as Paho, Kura, Californium and Concierge.
Glenn Renfro discusses how to create an application with a scheduler that will retrieve data from a web service, cleanse and emit the data via MQTT, by utilizing Spring Boot and Spring Integration.
The authors demonstrate Apache Tomcat's stability under high load, describe some do's (and some don'ts!), explain how to performance test a Servlet-based application, etc.
Daniel Mikusa and Stuart Williams overview of the changes and new features introduced by both the updated Servlet, JSP, EL, WebSocket specifications and the Tomcat specific changes.
Peter Niblett explains what MQTT is and how it compares with HTTP, showing how to program to it in Java and Eclipse Paho, and reporting on the current MQTT standardization status at OASIS.
Phil Webb offers tips and code samples on how to refactor existing code for the cloud, alternatives to the file system, compiling without the JDK, dealing with gateway timeouts and how to run Tomcat 7
Steve Vinoski overviews Yaws with code samples to highlight some of its features. Steve also discusses internals of Yaws, and how powerful Erlang can be for web development and distributed systems.
Jim Crossley introduces Immutant – an application server for Clojure, inspired by TorqueBox and powered by JBoss AS7 –, showing a demo application, how to use it, and exploring its API.