Blogs

HTTP & HTTP/2 are both application level protocols that utilize a lower level protocol like TCP to talk on the Internet. The protocol of the Internet is TCP over IP over Ethernet.

In the world of Microservices, the prevalence of REST API’s has made client-side developers depend on them for even the smallest of applications. If you want to develop a Weather app, you better know how to connect to one of the Weather API’s. If you want to develop a stock ticker you better know how to connect to a stock ticker API. In the world of Angular 5 connecting to API’s requires developers to understand RxJs, Observables in particular. The new @common/http module provides all the functionality required to connect to an API. we can further make it reactive using observables and the corresponding operators from the Rxjs Libraries. A simple Angular service generally allows us to perform common HTTP actions ( Get, Post, Put, Delete ) and some uncommonly used actions such as Head and Patch. I generally follow the below pattern when I create an angular service. ...

One of the most common tasks in software development is to define specific environments and manage them to develop, test, promote and deploy code. This is essential to use different values for various resources such as API’s or databases in different environments. For e.g. you may use a low powered SQL Lite instance for local development but use a large instance in staging and production. Similarly, you may use a local instance of an API in development and a different instance in production. Generally, frameworks provide environment management patterns to enable switching resources based on the environment. ...

VS code is a nice IDE for typescript projects and is actually the fastest growing javascript and angular IDE. When working on typescript projects some of us do not like the explorer to be polluted with the transpiled js and the js.map files. Luckily VScode allows us to hide the js files from the explorer using workspace settings. To do this open workspace settings from File –> Preferences –> Settings. Click on the drop down box to select Workspace Settings. ...

During a design session a few folks in my team had questions on using a static class vs a class with static methods. We hit upon this when designing utility classes and extension methods.During the course of this discussion some of us were surprised about what I felt was basic knowledge and I was also caught out on a few which led me to documenting this down below. Static Class Marking a class as static means that a compile time check will be conducted to ensure that all members of the class are static. Since the CLR does not have a notion of static, marking a class as static translates it to an abstract sealed class. ( conversly you cannot mark a static class as abstract) Static classes always inhert from Object and you cannot have it derive from another class. You cannot inherit from a static class. Static classes cannot implement an interface. You cannot obviously instantiate a static class. It cannot have constructors and the compiler also does not create a default parameterless constructor. Defining extensions in C# requires us to implement the static extension methods in a static class. There is a minor performance gain to using static methods as documented in this code analysis performance tip. The performance gain is due to the fact that instance methods always use the this instance pointer as the first parameter which is a small overhead. Instance methods also implement the callvirt instruction in IL which also leads to a very small overhead. Non Static Class A non-static class can have static members. ( both methods and fields ). You can create an instance of a Non static class with static methods. Factory pattern is an example of a Non Static class implementing a static method to control object instatiation. Microsoft docs has an article on this topic here . ...

In a world increasingly reliant on digital infrastructure, security is no longer a static state but a continuous process. Reactive security is a gamble no organization can afford. Proactive defense is paramount, and threat modeling stands as a crucial first line of defense. Threat modeling provides a structured approach to proactively identify and mitigate security risks. It’s about stepping into the mindset of an attacker, systematically examining your systems—whether a complex application, a sprawling network, or a cloud deployment—to pinpoint potential weaknesses. Threat modeling uncovers potential vulnerabilities, maps likely attack paths, and empowers teams to fortify their defenses preemptively. This process involves visualizing attack vectors, assessing potential impact, and prioritizing mitigation efforts. More than a mere checklist, it’s a dynamic process that blends analytical rigor with creative foresight, enabling you to anticipate and mitigate threats before they materialize. ...

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The Open Web Interface for .NET (OWIN) is a standard that defines an interface between .NET servers and web applications. Katana is an implementation of OWIN by the .Net foundation. Kestrel is a lightweight cross-platform web server that supports .NET Core and runs on multiple platforms such as Linux, macOS, and Windows.

A blockchain is a fully-distributed, peer-to-peer software network which makes use of cryptography to securely host applications, store data, and easily transfer digital instruments of value. Originally proposed by Satoshi Nakamoto in 2008 as the back-end for the Bitcoin cryptocurrency.( Nakamoto, 2008 ), Blockchain is now distinct from Bitcoin as a platform and stands on its own right seperated from the cryptocurrency implemenations from where it was born. Satoshi Nakamoto married his distributed consesus protocol to Adam Backs Hashcash algorithm which pioneered the use of mining to send transaction creating a simple database that is decentralized and stored in the nodes of its network. ...