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Large scale distributed consensus approaches: Large data sets

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In my previous post, I talked about how we can design a large cluster for compute bound operations. The nice thing about this is that is that the actual amount of shared data that you need is pretty small, and you can just distribute that information among your nodes, then let them do stateless computation on that, and you are done. A much more common scenario is when can’t just do stateless operations, but need to keep track of what is actually going on. The typical example is a set of users changing data. For example, let us say that
we want to keep track of the pages each user visit on our site. (Yes, that is a pretty classic Big Table scenario, I’ll ignore the prior art issue for now). How would we design such a system? Well, we still have the same considerations. We don’t want a single point of failures, and we want to have very large number of machines and make the most of their resources. In this case, we are merely going to change the way we look at the data. We still have the following topology: There is the consensus cluster,...(Read whole news on source site)

The Morning Brew #1741

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Software ImmutableObjectGraph has some big updates now, and more coming soon – Andrew L Arnott resumes activity on the ImmutableObjectGraph repository with a big batch of updates including migration from T4 templates to Roslyn Information NuGet dependency visualizer with F# and Graphviz – Sergey Tihon takes a look at revealing the dependency graph of NuGet […]

Getting the Current User in SharePoint XSLT

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SharePoint offers a couple of ways by which we can obtain the current user for use in a XSLT web part like DataFormWebPart or XsltListViewWebPart. All involve first setting parameters through the ParameterBindings property:
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Xamarin.Forms And Resources

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Often, there will be multiple views in your form that share the same values (e.g., font size, color, etc.).  There are a couple ways you can handle this: Create a resource dictionary and then refer to the resources using the … Continue reading → For the complete article and hyperlinks, please visit my blog at

Book Reviews

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This page will list all of my book reviews, in no particular order.Right now, I am reviewing Microsoft Azure Development Cookbook Second Edition, just give me some more days, because it’s a long one. Microsoft Azure Development Cookbook Second Edition(Review not yet available) Windows Presentation Foundation 4.5 Cookbook NHibernate 2 Beginner's Guide NHibernate 3.0 Cookbook Visual Studio 2012 and
.NET 4.5 Expert Development Cookbook NHibernate in Action Book Instant StyleCop Code Analysis How-to Review Developing Windows Store Apps with HTML5 and JavaScript Programming Entity Framework Pro WF: Windows Workflow in .NET 3.5 ...(Read whole news on source site)

Connecting to Cloud Services

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Modern applications often rely on services for analytics, data storage and retrieval, and customer information. It’s increasingly common to see applications that blend together services such as Salesforce with Azure Storage and a couple of analytics services such as Application Insights or Flurry. While these services provide usable REST APIs and client libraries, connecting to them remains a manual process. Visual Studio 2013 added a Connected Services dialog that started to automate this manual process and in Visual Studio 2015 Preview, we’re going further: we’ve added support for more services such as Azure Storage and Salesforce in addition to
existing support for Azure Mobile Services and Office 365 APIs. If you’ve tried to add a service to your application manually, you’ve probably experienced a workflow that involves adding NuGet, Bower, or NPM packages, trips to an online portal to retrieve connection strings, a (perhaps futile) search for relevant documentation to explain further details to set the service up, and possibly a lesson in OAuth. The Connected Services experience blends together Getting Started guidance, with a wizard-based approach for finding relevant services, getting the right connection libraries, and configuring the services. This blog post gives an overview of...(Read whole news on source site)