Asynchronous and Performance

Build high-performance and scalable applications with async/await, multithreading, Span<T>, and more.

Asynchronous and Performance

Performance is critical in modern applications. With async/await, the Task Parallel Library (TPL), and threading, developers can build responsive applications. Span<T> and Memory<T> provide low-level optimizations.

Goal: Improve responsiveness and resource efficiency in applications.

TL;DR

async/await for asynchronous programming.
TPL and thread management.
Memory management and the Garbage Collector.

Asynchronous Programming Basics in C# (async/await)

1 April 2026 • Asynchronous and Performance

Learn async and await in C# to build responsive applications with asynchronous tasks, non-blocking code, and practical examples.

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Task Parallel Library (TPL) and Parallel Programming in C#

1 April 2026 • Asynchronous and Performance

Learn Task Parallel Library and parallel programming in C# using Task, Parallel, and concurrency patterns with practical examples.

C# Parallel Programming Task Parallel Library

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Asynchronous Streams in C# (IAsyncEnumerable)

1 April 2026 • Asynchronous and Performance

Learn asynchronous streams in C# with IAsyncEnumerable to process data step by step using modern async iteration patterns.

Async Programming C#

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IDisposable and the Using Pattern in C#

1 April 2026 • Asynchronous and Performance

Learn IDisposable and the using pattern in C# to manage resources safely, release unmanaged objects, and avoid leaks.

C# IDisposable Using

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Performance Optimization with Span<T> and Memory<T> in C#

6 April 2026 • Asynchronous and Performance

Learn performance optimization in C# using Span<T> and Memory<T> to manage memory efficiently and process data faster.

C# Memory Management Performance

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Reflection and Late Binding in C#

6 April 2026 • Asynchronous and Performance

Learn Reflection and late binding in C# to inspect types at runtime and build flexible, dynamic applications.

C# Reflection

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The Concept of Source Generators in C# (C# 9+)

6 April 2026 • Asynchronous and Performance

Learn source generators in C# to generate code at compile time and improve performance with modern development techniques.

Advanced C# C#

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Code Analysis with Roslyn Compiler API in C#

12 April 2026 • Asynchronous and Performance

Learn code analysis in C# using Roslyn Compiler API, including syntax trees, analyzers, and code generation scenarios.

Advanced C# C#

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Unsafe Code and Pointers in C#

13 April 2026 • Asynchronous and Performance

Learn unsafe code and pointers in C# to work with memory addresses, low-level operations, and advanced performance scenarios.

C# Pointer

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Process and Thread Management in C#

13 April 2026 • Asynchronous and Performance

Learn process and thread management in C# to control execution flow, system resources, and multithreaded applications.

C# Process

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Memory Management and the Garbage Collector in C#

13 April 2026 • Asynchronous and Performance

Learn memory management and the garbage collector in C# to understand object lifetime, allocation, and cleanup processes.

C# Garbage Collector Memory Management

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In C#, the null-coalescing operator (??) allows you to provide a default value when a variable is null.


string? userName = null;

// Old approach
string name1 = userName != null ? userName : "Guest";

// Recommended approach
string name2 = userName ?? "Guest";

Console.WriteLine(name1); // Guest
Console.WriteLine(name2); // Guest

In C#, use TryParse instead of Parse when converting user input or external data to prevent runtime errors.


// Risky usage
int age = int.Parse(input);

// Safe usage
if (int.TryParse(input, out int result))
{
    Console.WriteLine(result);
}
else
{
    Console.WriteLine("Invalid number");
}

In C#, avoid catching the general Exception. Catch only the exceptions you expect to handle to prevent hiding real problems.


// Risky usage: hides the real problem
try
{
    int number = int.Parse(input);
}
catch (Exception)
{
    Console.WriteLine("Something went wrong");
}

// Recommended usage: catch specific exception
try
{
    int number = int.Parse(input);
}
catch (FormatException)
{
    Console.WriteLine("Input is not a valid number");
}

In C#, var should be used when the type is clearly understood from the right side. It improves readability without hiding information.


// Clear and readable: type is obvious
var numbers = new List<int>();
var name = "Alice";
var total = numbers.Count;

// Not recommended: type is not obvious
var result = GetData();

// Recommended alternative
List<User> users = GetUsers();

In C#, use string.IsNullOrWhiteSpace() to check text values instead of checking only for null or empty strings.


// Risky checks
if (text == null || text == "")
{
    Console.WriteLine("Invalid text");
}

// Safe and recommended check
if (string.IsNullOrWhiteSpace(text))
{
    Console.WriteLine("Invalid text");
}