Building a server to manage high concurrent connections is non-trival task. For those developers that use ActionScript 3 to build games on the client side it means having a totally different skillset. Being able to use ActionScript 3 on the server to build MMO’s or port client code to the server allows developers to leverage their skills on the server.
By walking through a live game example with more then 15,000 concurrent connections running on a medium Amazon EC2 server the presentation will:
1. Introduce Linux server configuration for high concurrent connected usage.
2. Introduce Socket class based on libev library for high concurrent connection.
3. Introduce leveraging Tamarin project for ActionScript 3 on the server.
This document discusses OpenStack, an open source software project for building public and private clouds. It outlines OpenStack's value in providing freedom from vendor lock-in and credibility through an open, community-driven model. The document proposes establishing standards and a trademark framework to ensure compatibility between OpenStack-powered products and allow the community to effectively promote the brand through shared marketing assets and guidelines.
Quantum is a project that provides networking services for OpenStack. It allows tenants to define complex network topologies rather than being limited to static connectivity options. Quantum uses plugins to support different backend technologies and integrates with Nova to provision virtual networks. The initial release focused on basic L2 networking capabilities. Future work includes improving production readiness, integrating all Nova networking features, and implementing advanced services like L3 routing.
Vagrant, Ansible, and OpenStack on your laptopLorin Hochstein
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The document discusses using Ansible and Vagrant together to easily test and deploy OpenStack. Ansible allows writing idempotent infrastructure scripts, while Vagrant allows testing them by booting reproducible virtual machines. The document provides an example of using Ansible plays to install NTP and using Vagrant to define VMs for an OpenStack controller and compute node.
Building a server to manage high concurrent connections is non-trival task. For those developers that use ActionScript 3 to build games on the client side it means having a totally different skillset. Being able to use ActionScript 3 on the server to build MMO’s or port client code to the server allows developers to leverage their skills on the server.
By walking through a live game example with more then 15,000 concurrent connections running on a medium Amazon EC2 server the presentation will:
1. Introduce Linux server configuration for high concurrent connected usage.
2. Introduce Socket class based on libev library for high concurrent connection.
3. Introduce leveraging Tamarin project for ActionScript 3 on the server.
This document discusses OpenStack, an open source software project for building public and private clouds. It outlines OpenStack's value in providing freedom from vendor lock-in and credibility through an open, community-driven model. The document proposes establishing standards and a trademark framework to ensure compatibility between OpenStack-powered products and allow the community to effectively promote the brand through shared marketing assets and guidelines.
Quantum is a project that provides networking services for OpenStack. It allows tenants to define complex network topologies rather than being limited to static connectivity options. Quantum uses plugins to support different backend technologies and integrates with Nova to provision virtual networks. The initial release focused on basic L2 networking capabilities. Future work includes improving production readiness, integrating all Nova networking features, and implementing advanced services like L3 routing.
Vagrant, Ansible, and OpenStack on your laptopLorin Hochstein
?
The document discusses using Ansible and Vagrant together to easily test and deploy OpenStack. Ansible allows writing idempotent infrastructure scripts, while Vagrant allows testing them by booting reproducible virtual machines. The document provides an example of using Ansible plays to install NTP and using Vagrant to define VMs for an OpenStack controller and compute node.
1) The document discusses concurrency and the traditional model of sharing data between threads which leads to complexity, bugs, and diminishing returns.
2) It introduces the actor model from 1973 which uses message passing between isolated processes or "actors" to achieve concurrency without shared data.
3) ZeroMQ is presented as a modern implementation of the actor model, allowing applications to connect threads and processes across machines using messaging without locks or shared state.
Quantum - Virtual networks for Openstacksalv_orlando
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An overview of Quantum, the soon-to-be default Openstack network service.
These slides introduce Quantum, its design goals, and discusses the API. It also tries to address how quantum relates to Software Defined Networking (SDN)
Europycon2011: Implementing distributed application using ZeroMQfcrippa
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The document discusses the messaging patterns and sockets in ?MQ (ZeroMQ), an open-source library for building distributed applications. It describes the basic patterns like publisher-subscriber, request-reply, and load balancing. It explains that ?MQ sockets support asynchronous messaging, are cross-platform, and can be used from multiple programming languages. The document also touches on scalability, dynamic scaling, and built-in devices in ?MQ like proxies and brokers.
Using Mikko Koppanen's PHP ZMQ extension we will look at how you can easily distribute work to background processes, provide flexible service brokering for your next service oriented architecture, and manage caches efficiently and easily with just PHP and the ZeroMQ libraries. Whether the problem is asynchronous communication, message distribution, process management or just about anything, ZeroMQ can help you build an architecture that is more resilient, more scalable and more flexible, without introducing unnecessary overhead or requiring a heavyweight queue manager node.
?MQ was created to address the need for cheaper and more efficient connectivity between distributed systems as hardware capabilities increased. It is an intelligent socket library that provides various connection patterns for messaging between processes. ?MQ aims to be fast, small, multiplatform, and multilingual. It uses common patterns like request-reply and publish-subscribe to allow processes to communicate simply and efficiently over in-process, inter-process, and network connections. The ?MQ community continues to enhance and support the open source library.
Check out my blog : https://oalieno.github.io/2019/06/07/security/pwn/rootkit/
Introduction and implementation of rootkit. Targeting linux kernel 5.x.x.
Re-Think of Virtualization and ContainerizationXu Wang
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The Hyper view on Container and Virtual Machine --- the similar parts and the different parts. The sildes was presented in Open Source Operating System Annual Technical Conference 2015 at Tsinghua University, Beijing on Nov 28th.
VisualOps is a Platform as a Service (PaaS) that aims to simplify operations tasks like deploying code, configuring infrastructure, scaling, and handling failures. It provides an IDE interface for visually designing infrastructure as code using reusable components. The designs are rendered into recipes that agents on instances use to automate configuration via SaltStack. VisualOps handles dependencies and ensures environments always match their designs. It improves on other PaaS options by allowing more customization of architectures, integration of resources, and deploying associated environments together.
This document illustrates the general architecture and data flow of tgtd, the iSCSI target daemon. It shows how tgtd handles iSCSI requests from initiators and processes SCSI commands by communicating with low-level driver routines and backing storage devices like mmc, osd, and sbc. Management tasks like login, logout, and error handling are also depicted.