Bifrost Highly scalable, cloud-based, business applications built using a CQRS architecture (Command Query Responsibility Segregation). Scheduler backed by RabbitMQ in order to provide for robustness and scale. Automatically detects failures on distributed systems. Provides us with the tools for a friendly scaling experience. Bifrost Activation Code is designed to work with the following stack: JVM Spring Boot RabbitMQ The following resources were made for the sake of demo and learning purpose. Bifrost Demo Application (link to repo). Bifrost GitHub - Main Repo. Bifrost GitHub - Tests Repo. Bifrost GitHub - Properties File. Questions & Answers: Is Bifrost compatible with Spring Cloud Data Flow (via Jaxb)? Yes, Spring Cloud Data Flow is built on top of Spring Cloud Stream. Can we define specific failure recovery strategies for a query service in Bifrost? Yes, we have an Eremitra strategy in the GitHub repository that is able to recover from a failure. Does it make sense to have an active/passive subscriber when using RabbitMQ? Yes, you can have an active/passive subscriber, but there is nothing special about it. You can have a passive subscriber if you want to be able to recover automatically from failures. Is it possible to run Bifrost inside a docker container? Yes, it's possible. A: The architecture looks quite neat and flexible, and I am curious how you will tackle the distributed nature of it. As for availability and high-scale, I have a few questions: Will you use the built-in autoscaling (as defined by CloudFoundry)? How will you deal with failures on the different services? Will you just say the servers are highly unreliable? Also, I would like to know how you cope with the scheduling and storage of events on a distributed system. I think you have a backlog of things to do, and if I had to do it, I would use Redis as the basic event store, and give RabbitMQ the job of basically serializing the queues and publishing the events. Q: "load data" command in oracle fails I have a problem. I've exported my table to CSV and want to import it to Oracle with sql command load data infile... But it fails Bifrost Download Bifrost is a framework providing easier and simpler ways of building highly scalable and available business applications. Bifrost provides abstractions on top of the concept of CQRS -Command Query Responsibility Segregation Bifrost comes with built in support for different persistence mechanisms. Bifrost provides support for the following persistence mechanisms Bifrost provides the following command and query handlers for the different persistence mechanisms. Bifrost provides the following command and query handlers for the different persistence mechanisms. Bifrost is a modular framework. It allows you to choose the subset of bifrost components you wish to use and build your application on top of it. Modular Bifrost CQRS is an abstract business oriented application architecture. As such, it is fairly complex to build and maintain. This is where the modularity of Bifrost comes in handy. Bifrost offers a basic set of components that can be used to build an application that is entirely based on the CQRS principles. (The modules below are just examples of what Bifrost is capable of) Projects using Bifrost Bifrost has been used in a number of different projects. Example of how the command and query engine can be used Example of how the command and query engine can be used See also A CQRS based business oriented application in bifrost A CQRS based business oriented application in bifrost Category:Middleware frameworksRelated: Gallery (KMOV.com) -- Steve Stephens, the suspected gunman who took the life of retired St. Louis Police Officer Anthony Lamon, was found dead Monday, according to reports. At around 12:37 a.m. Monday, St. Louis Police announced that Stephens was found dead inside a gas station in the 2900 block of Cole Avenue, west of Ferguson. Police had been searching for Stephens, 41, since he allegedly shot and killed Lamon, 63, Saturday morning on a street in North St. Louis. Stephens is a suspect in the killing of a man and a woman in Ohio on March 24. Police say Stephens allegedly shot the man after an argument over a car at around 11:30 p.m. Saturday. He later kidnapped the woman and forced her into the trunk of her own car at gunpoint, police said. Stephens fled the scene and then shot the woman several times, police said. On March 30, Stephens was arrested in a house in the 3600 block of Creek Road, east of North Kansas City, Missouri, after a woman called police to report a burglary in progress. A neighbor told police Stephens had been trying to commit suicide with a knife when they arrived. Stephens was taken to 1a423ce670 Bifrost For Windows Bifrost's are based on 4 cornerstones : Durable State pattern (where a business class, aggregates the various data required to perform a business operation). Commands and Events (that are handled by an event service) Abstraction (where our Bifrost classes are based on the business object pattern) Coders (where we hide the fiddling that often goes into the same project) The above can be generalized to the following : Bifrost takes the concept of Command and Event as used in the ESB and lets you abstract your business logic out and bring it back as an independent set of classes (where you can use and change the implementation as you like). The above services are backed by a persistant store. Where you can take care of Durable State (the bits that are related to a particular operation, only the bits that are to be modified or added are persisted. Unidirectional Commands and Events. This means that a command always emits an event and an event always emits a command. This is not the usual way of doing things where Commands are processed/handled by the event service and Events are processed by the command service. Instead we use our business objects as the aggregates that can be manipulated directly. The purpose of an aggregate is that it can encapsulate a business operation. Example of command handler: class CommandHandler : ICommandHandler { private readonly IEventService _eventService; public CommandHandler(IEventService eventService) { _eventService = eventService; } public void Handle(string command) { IStateExecutionService stateExecutionService = _eventService.StateExecutionService; IStateBinding binding = stateExecutionService.GetStateBinding(command); if (binding.HasChanged) { _eventService.Publish(binding.StateChangedEvent); } IStateExecution execution = _eventService.StateExecutionService.GetStateExecution(binding.StateId); What's New in the Bifrost? System Requirements: * Memory: 2 GB * Video Memory: 2 GB * VRAM: 1 GB * Resolution: 1024x768 * Screen Resolution: 640x800 * DirectX Version: 11 * Language: English + Permissions: No + Required Application: + Features: * Windowing Manager * Stereo Rendering * Texture Compression * Vector Shaders * DX11 The Multiwinia
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