Reusing objects in C# is a strategy that aligns with the principles of efficient memory management and application performance optimization. This concept is important in environments where memory resources are limited or when the cost of object creation is high. For instance mobile applications, embedded systems, or server applications handling multiple concurrent requests count as typical examples. The underlying technical reason for object reuse is to reduce the overhead related to the memory allocation and garbage collection. Every time an object is created, the .NET runtime needs to allocate space on the managed heap. As objects accumulate, the garbage collector…
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The best way to describe the relationship between C and Unix will be mutual evolution. Both were developed at Bell Labs and each played a unique role in the other’s success. This symbiotic relationship not only led to the widespread adoption of both C and Unix but also set the foundations of modern computing. Or computing as we know it. Unix began as a small project led by Ken Thompson and Dennis Ritchie at Bell Labs. Remember, Dennis Ritchie is also the inventor of C programming language. The primary principle was to be a simple, multi-tasking, multi-user operating system. In…
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ArrayPool<T> in C# is a very useful but a less known feature. It has been around since .NET 2.0 but has never been popular. In order to understand ArrayPool, we can use the analogy of a communal bike-sharing system. Just as you can pick up a bike when you need it and return it when you’re done. ArrayPool<T> lets you borrow and return arrays, reducing the need to constantly create new ones. This is useful when working with large arrays or in scenarios where arrays are frequently created and discarded. For instance high-performance computing, data processing, or handling large datasets…
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Bitwise operators in C# are special tools that let you work directly with the individual bits of a number’s binary representation. If you are reading this blog post, I assume you also know that in computing world, numbers are actually stored as sequences of bits. Bitwise operators allow you to perform operations on these sequences bit by bit. They are like the switches that can flip the bits in certain patterns. They allow for a variety of operations such as flipping bits on and off, shifting them left or right, or comparing two values bit by bit. However we can’t…
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Exceptions in C# are definitely a great facility but we need to use them wisely. We should leave the least possible probabilities of throwing an exception since exceptions come with a cost. Exceptions simply signal that something has gone wrong in your code. The purpose of an exception is to allow your program to understand and respond unexpected problems like cleaning up resources or notifying the user. However making decisions about the program’s logic is not among the primary purposes of exceptions. Even though I am talking through C#, this is true for all programming languages having exceptions. So, using…
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In C#, understanding the difference between value types and reference types is a fundamental topic when writing efficient and performant code. The choice between using a value type (like a struct) or a reference type (like a class) can have significant implications on both memory usage and performance. The technical reasoning behind preferring value types over reference types lies in how they are managed in memory. Reference types are stored on the managed heap and come with an overhead of garbage collection. It can affect performance especially if there are many allocations and deallocations. Additionally, accessing data through a reference…
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In the world of software engineering, there is a constant change. Anything we learn has a potential to get redundant just in a matter of years. A lot of languages, methodologies, techniques, tools, frameworks, libraries came in with a huge noise and went away silently. Very few things manage to live for a decade. However, there is one thing which has been there for more than half a century, and remained unchanged. It is the core of all operating systems, and also all compilers and interpreters of unexceptionally all programming languages, and it is also the father of almost all…
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Before diving into topic, I want to begin with clarifying the terminology. Immutable data refers to data whose state cannot be modified after it has been created. Once an immutable object is created, its internal state remains constant throughout its lifetime. Any attempt to modify the object’s state results in the creation of a new object with the updated state, leaving the original object unchanged. In C#, you can define your data using either classes or structs. The choice between a class and a struct can influence the behaviour and performance of your application. Classes are reference types and structs…
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In C#, the in parameter modifier is relatively a recent addition. It added in C# 7.2. The main point of in keyword is to pass a large value type to a method without copying the entire structure. Value types in C# are typically passed by value. This means that the entire thing is duplicated and handed off to the method. This may not be a big deal for small value types like int or bool. However, for larger value types, it can be quite expensive in terms of performance because it takes time and memory to take care of these…
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The title could have also been “Don’t use unsafe code at all!” You will come to the same conclusion after reading this post, but still I gave a room for its usage. In C#, the usage of unsafe code is a topic of debate. On one side, it offers the potential for performance gains in specific scenarios. Yet the risks and complexities it introduces often outweigh its benefits. What is unsafe Unsafe code in C# refers to a block of code that uses pointers and allows direct memory manipulation, bypassing the .NET runtime’s type safety and security checks. This capability…
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Containerization became one of the recent trends in software development technology, because of its advantages with deployment and scalability and it is not for the first time I am writing about dockerizing an app. No doubt, Docker practically is the only platform for containerization, and it provides developers a convenient method to bundle applications and their prerequisites into efficient containers. It also guarantees uniformity across very different environments. In this post, I will explore the steps involved in containerizing a React application using Docker, starting from the creation of a fundamental React component and concluding with its execution within a…
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We often hear the terms “stateful” and “stateless”. Understanding these concepts has a critical importance since it is one of the most essential questions when designing and architecting software applications. In today’s blog post, I wanted to talk about these two very basic concepts. As the simplest definition, stateful application means an application which remembers the past, similarly, stateless application means an application which doesn’t remember the past. The state we have been talking about might be saved in a database, a file on the disk, a cookie in a browser etc. As an example, consider an e-commerce website. When…
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Keeping things secure is the important part of any application. As entire internet going to cloud, Azure Active Directory (AD) is one of the best possible among one of two popular options. It helps manage who can use your app and what they can do. Let’s see how to set up Azure AD for a C# and Java Spring Boot backend, and a React frontend to make sure only the right people get in. First, go to the Azure portal and make a new Azure AD tenant if you don’t have one yet. Then, register your app in Azure AD.…
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In software development, performance optimization is a crucial topic and one of the most effective ways to improve the performance is caching. However, caching is a double edged sword we need to very careful about when and how to use caching. So, we need to use right strategy in right place. Caching can be implemented at different levels, including memory, network, and CDN (Content Delivery Network) levels. Each level has a unique purpose and is suitable for different use cases. In this post, we will focus on memory-level caching which is simply storing the data in the memory of the…
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Docker is a powerful tool that allows developers to package applications into containers. These containers can run on any system that has Docker installed, making it easier to deploy and run applications consistently across different environments. Containers are like lightweight, portable packages for your application, including everything it needs to run: code, runtime, libraries, and settings. I assume that you have already know what Docker is and also you have .NET and Docker installed on your machine. Don’t worry, just download and then next + next. For more details and official documentation, you can visit Docker’s official website and for…
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D is an interesting language. For some reason, I have an emotional connection with this language and I believe that it is the subject of the biggest unfairness story in the history of software development. To me, it is the best programming language in the market for the reasons I am going to state below. However, this language is underestimated, underrated, and despised in the programming circles because it doesn’t have a strong backer. In this article I want to talk about, and give some credit to D, an underrated sibling of C++, Java and C#. The D programming language…