shared chat / drawing canvas – Game events © Joe Mertz – Mobile to Cloud: Building Distributed Applications • Workarounds have been devised • E.g. Polling – Client continuously polls the server • E the next time he wants to send a letter. © Joe Mertz – Mobile to Cloud: Building Distributed Applications • Provides for true two-way ongoing communication between a client and server. • Each side Some old browsers don't implement WebSockets © Joe Mertz – Mobile to Cloud: Building Distributed Applications // Create a new WebSocket var wSocket = new WebSocket("ws://www.example.com/socketserver") //

future of cloud native applications Mark Russinovich @markrussinovich Open Application Model dapr: Distributed Application Platform Building Cloud Scale, Hybrid Applications Agenda Application Models App developers need to know and code for each infrastructure they deploy to Kubernetes for applications "[Kubernetes] is really hard to get into it and understand how all the parts play together people." – Software Architect @ Crisp Kubernetes focuses on container infrastructure, not on applications Application developers need to be experts in Kubernetes APIs Production use of Kubernetes

1 Quickly Testing Qt Desktop Applications with Approval Tests Clare Macrae (She/her) clare@claremacrae.co.uk 16 September 2020 CppCon (Online)2 Audience: Developers testing Desktop GUIs, including and readable with fixtures • ApprovalTests.Cpp.Qt feedback welcome!80 Quickly Test Qt Desktop Applications • All links from this talk, and more, via: – bit.ly/TestingQt – github.com/claremacrae/talks

Kubernetes VM Solutions for Multi-Tenant Applications Guangxu Li, Senior Software Engineer, ZTE li.guangxu@zte.com.cn Container and VM Ecosystem Kubernetes Docker Swarm Marathon Nomad Container Container OpenStack Others Why We Run VM on Kubernetes? • Traditional Applications • No linux based Applications • Functions provided by host kernel are not satisfied • OpenStack is too complex • Unified

The Future of Cloud Native Applications with Open Application Model (OAM) and Dapr @markrussinovich Application models Describes the topology of your application and its components The way developers of Cloud Native Application Platforms Kubernetes for applications Kubernetes focuses on container infrastructure, not on applications Application developers need to be experts in Kubernetes modeling supports a wide range of application architectures Small and simple applications are easy, large and complex applications are manageable Allows application developers to focus on their code in

console.log(object.foo) Jonathan Müller A fast, compliant JSON pull parser for writing robust applications undefined Jonathan Müller — @foonathan Express your expectations CppCon 2023-10-03 10JSON parsing std::print("{}\n", object.at("foo")); Jonathan Müller A fast, compliant JSON pull parser for writing robust applications Uncaught exception. Jonathan Müller — @foonathan Express your expectations CppCon 2023-10-03

Traits/Scopes Scale: - 10,000 nodes/cluster - 100,000 apps/cluster - 1,000,000 containers/cluster Applications: - 100,000 deploys/day - 500~1000 replicas/app Function Job Container Virtual Machine Gateway

session . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 4.5 pywebio.platform — Deploy applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4.6 pywebio.pin — Persistent input text terminal”, and can be used to build simple web applications or browser-based GUI applications. Using PyWebIO, developers can write applications just like writing terminal scripts (interaction based without the need to have knowledge of HTML and JS. PyWebIO is ideal for quickly building interactive applications that don’t require a complicated user interface. MANUAL 1 PyWebIO, Release 1.7.1 2 MANUAL

session . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4.5 pywebio.platform — Deploy applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 4.6 pywebio.pin — Persistent input text terminal”, and can be used to build simple web applications or browser-based GUI applications. Using PyWebIO, developers can write applications just like writing terminal scripts (interaction based without the need to have knowledge of HTML and JS. PyWebIO is ideal for quickly building interactive applications that don’t require a complicated user interface. MANUAL 1 PyWebIO, Release 1.8.0 2 MANUAL