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Author Archives: nehasaini_qait

Choose the Work Flow for Entity Framework
07 Apr, 2017

Choose the Work Flow for Entity Framework

  • nehasaini_qait
  • Business,Dot Net
  • Tags: database, dotnet, entity framework, framework, technology
  • no comments

framework

Two things are therein mind while choosing the workflow.

Things that are outside our control:

New database/Existing Database:

Thing that are inside our control:

Creating model using design or writing code.

Model First—

  1. Create model in designer.
  2. Generate DB from the model.
  3. Classes that are going to interact auto generated from model.

Database First—

  1. Reverse engineer model in designer.
  2. Classes are auto-generated from Model.

Code First (New Database) —

  1. Find my model in code. Model is made up of main classes that are going to interact with the application. Optionally can provide the code for mapping and configuration.
  2. Database is created from the model.
  3. If I can my model, then can use the Code First Model to evolve database.

Code First (Existing Database) —

  1. Define classes and mapping in code.
  2. Reverse engineering tools are available.
17 Oct, 2015

Dynamic IP Restriction module for IIS7

  • nehasaini_qait
  • Dot Net
  • Tags: iis, ip address, ip restriction, ipv6
  • no comments

We can save the client IP using ‘REMOTE_ADDR’, but there is possibility that it is behind some proxy and has have client IP using ‘HTTP_X_FORWARDED_FOR’.

So, we can get some similar pre-defined server methods to detect the IPs and then can easily restrict the concurrent IP request by matching the first 3 bytes of the IP.

A request has to be made and then we may stop it from further accessing the useful functions by showing an error message after we have detected one of the concurrent IP.

We can also detect the country that holds that IP and if that would a high risk country then we can block it.

We can use following module —­

Dynamic IP Restriction module can be used for IIS, some of the characteristics are:

  • If a client exceeds number of concurrent request allowed, then it temporarily block the client.
  • If a client exceeds number of requests within a limited time, then it temporarily block the client.
  • Provides support for IPv6 addresses.

Also one can configure server to get proxy ‘HTTP_X_FORWARDED_FOR’ header with is called as Proxy Mode.

For Reference:

  • http://www.iis.net/learn/manage/configuring-security/using-dynamic-ip-restrictions
  • http://www.iis.net/learn/get-started/whats-new-in-iis-8/iis-80-dynamic-ip-address-restrictions

 To download the extensions:

  • http://www.iis.net/downloads/microsoft/dynamic-ip-restrictions
24 Mar, 2015

VirtualBox

  • nehasaini_qait
  • Business,Company,Open Source
  • Tags: open sources
  • no comments

Virtual box is a virtualization software package from Oracle Corporation. VirtualBox acts like a different or separate computer within one’s existing computer.

One can install just about any operating system on it. This application allows any additional guest OS to run and load. If you install windows on it, you can use it to run any application for that version of windows. Linux, Windows XP, Windows 7, Solaris, Windows 8,Mac OS X and open Solaris are supported host Operating systems.

Under a single host operating-system (host OS), one can load multiple Oss. Every host can be started, stopped and paused independently. Using this desktop virtualization software, multiple OSs can be run on your computer.

Configuring a virtual machine is very simple and similar to assembling a computer with memory, processor etc. Guest VMs can also directly communicate with each other if configured to do so. It is basically to use the unused resources on a physical system /computer to run multiple Operating Systems in it.

Advantages:

  • Without restarting the single computer, multiple Operating system are available at a time.
  • Old legacy can be run on your latest computer.
  • Totally isolated environment from host OS.

Limitations:

  • It has a low transfer rate to and from USB2 devices.
  • It does not give support to USB3.
  • VirtualBox is an open source but certain features are under commercial license.

 

Advancement in web with Focus on Quality & presentation
23 Mar, 2015

Advancement in web with Focus on Quality & presentation

  • nehasaini_qait
  • Business,Open Source
  • no comments

With the growth of internet and the smart devices, it has become a necessity to provide learning solutions that work on laptops, smartphones and tablets. Development in HTML5, CSS and JavaScript has led to a common e-learning solution that work on all the devices. So as an e-learning developer, I will briefly talk about few of the new technologies in a short and precise way that I used in my e-learning project creation.

AngularJS:

In early days of JavaScript, we had to manipulate DOM using APIs which were in-consistent across web-browsers. Then JQuery came which improved APIs and made it easier to develop cross-browsers web-applications. Now the era of powerful, versatile and flexible JavaScript MVC framework i.e.  Angular JS arrived which instead of hiding the HTML and CSS, has strengthen them to make them suitable for describing dynamic views and results into a work flow that is very much familiar to both new and experienced Smartphone app developer.

 1

All Three in one Cup:

HTML5, CSS3 and AngularJS MVC framework has simplified the frontend development to make the complex web app. The combination is a complete solution for rapid-frontend development. It has reduced the complexity of the server and eliminates the server-side HTML rendering.

AngularJS includes things like model-handling, template handling, AJAX and data-binding. It is a very approachable application framework with which one can easily work on. With this incredible framework, one can have an app within in few minutes. The code for AngularJS app is organized into Models, Views, and Controllers where the views are defined using HTML and CSS, Controllers are just JavaScript methods. So it’s easy to work out with these.

Working with this awesome JavaScript framework which provides two-way data binding is both fast and easy to use. It is such a powerful directive system which helps in creating reusable custom components and many more. This combination is a style that is clear and concise.

 

All in one cup

Benefits of AngularJS Framework:

AngularJs is that MVC framework which enhances HTML by attaching its directives to the page which in turn define powerful templates in one’s HTML. It includes its built in validations like min-length, max-length, required, email etc. It helps in structuring and testing the code very easily. It is easy to get started and is relatively fast to develop apps. It can work in a very small portion of the page with no impact on the file layout. It works efficiently with the other technologies and libraries and is also extensible.

Conclusion:

There are many strengths of client-side templating with HTML5, CSS3 and AngularJS technology. It affects the performance positively and maximize the code reusability and maintainability. Moreover, this framework is designed in such a way that testing of the AngularJS app is as easy as possible. Arrival of advanced and exciting application frameworks like AngularJS is a milestone that any developer or designer should be excited about.

 

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