Sudipta Mitra

🚀 Today’s Post | Interview Question #36 Dependency Injection Lifecycles in .NET 🧐 Here’s your quick guide to DI in .NET Core: 🔹 Singleton ♾️ ✅ One instance for the entire application ✅ Perfect for stateless, shared services (e.g., Logger) ❌ Dangerous for storing state! 🔹 Scoped 🔄 ✅ One instance per user request (e.g., in a web app) ✅ Ideal for Entity Framework DbContexts ❌ Not thread-safe outside a request 🔹 Transient ⚡ ✅ A new instance is created every time it’s requested ✅ Great for lightweight, stateless services ❌ Can cause memory overhead if overused 💡 Quick Recap: Singleton = Shared, global state Scoped = Per user session/request Transient = Always new, never shared Mastering these lifecycles will level up your architecture and prevent nasty bugs. 🚀 👉 Which lifecycle do you use the most in your projects? 🔑 Hashtags #DotNet #DotNetCore #DependencyInjection #SoftwareArchitecture #Programming #BackendDevelopment #WebDevelopment #Microservices #Coding #SoftwareDevelopment #Tech #CodeNewbie #LearnToCode

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💡 𝐂# 𝟏𝟑 / .𝐍𝐄𝐓 𝟗 - 𝐋𝐨𝐜𝐤 𝐓𝐲𝐩𝐞 𝐅𝐞𝐚𝐭𝐮𝐫𝐞 💎 With .NET 9, we have a dedicated lock type instead of using reference types like 𝐨𝐛𝐣𝐞𝐜𝐭. The .NET 9's 𝐋𝐨𝐜𝐤 𝐭𝐲𝐩𝐞 𝐨𝐟𝐟𝐞𝐫𝐬 ~𝟐𝟓% 𝐟𝐚𝐬𝐭𝐞𝐫 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 than traditional object locking. It provides clearer intent, better IntelliSense support, and prevents common mistakes like locking on strings or value types. ⚡ 𝐓𝐫𝐲𝐄𝐧𝐭𝐞𝐫() 𝐌𝐞𝐭𝐡𝐨𝐝:  Unlike object locks, the .NET 9's lock type provides TryEnter() which attempts to acquire the lock with a timeout. If the lock can't be acquired within the specified time, it returns false instead of blocking indefinitely. 🔥 𝐊𝐞𝐲 𝐁𝐞𝐧𝐞𝐟𝐢𝐭𝐬: ✅ Purpose-built for synchronization  ✅ Improved performance with optimized internals  ✅ Type safety and better code clarity  ✅ Seamless migration with lock statement support 𝐍𝐨𝐭𝐞: You still can't use await inside lock statements. For async scenarios, consider SemaphoreSlim or other async-friendly synchronization primitives. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

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I still see this mistake in EF Core projects — even in production code. Calling .ToList() too early. This loads every user into memory before filtering. Huge waste of memory, CPU, and network bandwidth. The fix is simple. Filter before fetching. Let the database do the heavy lifting. Small change → massive performance boost 🚀 Free .NET Web API Zero to Hero → https://lnkd.in/gHjTfixw

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💡 .𝗡𝗘𝗧 𝗧𝗶𝗽 - 𝗖# 𝘄𝗶𝘁𝗵𝗼𝘂𝘁 𝗮 𝗽𝗿𝗼𝗷𝗲𝗰𝘁? 𝗬𝗘𝗦, 𝗶𝘁’𝘀 𝗽𝗼𝘀𝘀𝗶𝗯𝗹𝗲 𝗻𝗼𝘄! With .NET 10, you can simply run a .cs file directly using 𝙙𝙤𝙩𝙣𝙚𝙩 𝙧𝙪𝙣 𝙖𝙥𝙥.𝙘𝙨, — no project files, no boilerplate setup. Why does this matter? ✅ Perfect for quick experiments ✅ Great for learning and teaching ✅ Makes scripting in C# easier than ever ✅ Feels like Python or JavaScript dev experience In this article, I break down how this new feature works, including: ✅ File-level directives like #:𝙥𝙖𝙘𝙠𝙖𝙜𝙚 and #:𝙨𝙙𝙠 ✅ Referencing NuGet packages ✅ Adding build properties directly Whether you're testing APIs or building simple tools, this change makes working with C# more lightweight and fun. 👉 Read the full article here: https://lnkd.in/gDRSjXSy 💬 Have you tried this new approach yet? Would love to hear your thoughts. 🧠 Let me know what you think — and don’t forget to subscribe to my newsletter .𝙉𝙀𝙏 𝙒𝙚𝙚𝙠𝙡𝙮 𝙏𝙞𝙥𝙨 𝙗𝙮 𝙋𝙤𝙤𝙧𝙣𝙖 to get more content like this delivered to your inbox! ♻️ If you found this helpful, consider reposting to help others in the community. 👉 Follow me, Poorna Soysa, and hit the 🔔 on my profile so you don’t miss upcoming .NET tips and deep dives. Thanks for reading — let’s keep learning .NET together.

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💡 .𝗡𝗘𝗧 𝗧𝗶𝗽 - 𝗘𝘅𝗰𝗲𝗽𝘁𝗶𝗼𝗻𝘀 𝘃𝘀. 𝗥𝗲𝘀𝘂𝗹𝘁 𝗣𝗮𝘁𝘁𝗲𝗿𝗻 🔥 When writing robust .NET code, how you handle errors plays a big role in your app’s clarity, performance, and maintainability. Two common approaches: ✅ Exceptions and the ✅ Result Pattern But when should you use each? Let’s break it down. ✨ 𝗘𝘅𝗰𝗲𝗽𝘁𝗶𝗼𝗻𝘀: 𝙀𝙭𝙘𝙚𝙥𝙩𝙞𝙤𝙣𝙨 are used to handle unexpected errors that disrupt the normal flow of execution. In many programming languages, there is a built-in exception handling mechanism to catch errors, log them, and manage the flow accordingly. 𝗪𝗵𝗲𝗻 𝘁𝗼 𝘂𝘀𝗲: ✅ For truly unexpected or exceptional errors (e.g., file not found, network issues). ✅ When an error is severe enough to interrupt the current operation and needs to propagate up for centralized handling. 𝗞𝗲𝗲𝗽 𝗶𝗻 𝗺𝗶𝗻𝗱: 🔻Exceptions are expensive in terms of performance 🔻Not ideal for errors that are expected as part of normal business flow ✨ 𝗥𝗲𝘀𝘂𝗹𝘁 𝗣𝗮𝘁𝘁𝗲𝗿𝗻: 𝙏𝙝𝙚 𝙍𝙚𝙨𝙪𝙡𝙩 𝙋𝙖𝙩𝙩𝙚𝙧𝙣 is an alternative to exceptions. It involves returning a result that encapsulates both success and failure, typically using a custom result object. This approach makes error handling more predictable and cleaner, especially in applications that deal with many errors as part of the normal flow. 𝗪𝗵𝗲𝗻 𝘁𝗼 𝘂𝘀𝗲: ✅ For expected errors (e.g., invalid user input, failure to find a resource). ✅ When you want to handle errors explicitly without halting the operation and in cases where the error is part of normal behavior. 𝙏𝙝𝙚 𝙍𝙚𝙨𝙪𝙡𝙩 𝙋𝙖𝙩𝙩𝙚𝙧𝙣 helps avoid the performance cost of exceptions and gives you more control over the error handling process. 🤔 𝗗𝗲𝗰𝗶𝗱𝗶𝗻𝗴 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝘁𝗵𝗲 𝗧𝘄𝗼 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵𝗲𝘀 🌟 𝙀𝙭𝙘𝙚𝙥𝙩𝙞𝙤𝙣𝙨 are better suited for handling unexpected errors that fall outside the normal flow of the program. 🌟 𝙏𝙝𝙚 𝙍𝙚𝙨𝙪𝙡𝙩 𝙋𝙖𝙩𝙩𝙚𝙧𝙣 is ideal for handling expected errors or when there's a need to avoid the performance overhead of exceptions. 💬 What’s your preference in real-world projects? Comment below👇 🧠 Stay updated with tips like this — subscribe to my newsletter .𝙉𝙀𝙏 𝙒𝙚𝙚𝙠𝙡𝙮 𝙏𝙞𝙥𝙨 𝙗𝙮 𝙋𝙤𝙤𝙧𝙣𝙖 and get the latest .NET insights straight to your inbox! 👉 https://lnkd.in/d9GNwpDc ♻️ If you found this helpful, consider reposting to help others in the community. 👉 Follow me, Poorna Soysa, and hit the 🔔 on my profile so you don’t miss upcoming .NET tips and deep dives. Thanks for reading — let’s keep learning .NET together.

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𝗗𝗼𝘁 𝗡𝗲𝘁 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻: 👉 What’s the difference between Task.WhenAll and Task.WhenAny in .NET? 𝗔𝗻𝘀𝘄𝗲𝗿: 🔹 Task.WhenAll • Runs multiple tasks in parallel. • Returns when all tasks are complete. • Good for aggregating results. • If any task fails, throws an AggregateException. 🔹 Task.WhenAny • Runs multiple tasks in parallel. • Returns as soon as any one task completes. • Useful for scenarios like “race” conditions (e.g., picking the fastest API response). ⚡ Example Use-Cases: • Use WhenAll → When you want all background operations done (e.g., fetching multiple APIs together). • Use WhenAny → When you just need the first available result (e.g., fastest mirror server). ⸻ ✨ 𝗧𝗶𝗽: Choosing the right one can optimize performance and resource usage in async-heavy apps. #DotNet #CSharp #AsyncAwait #CodingTips #InterviewPrep #DotNetDevelopers #SoftwareDevelopment #WebDevelopment #BackendDevelopment #CleanCode #SystemDesign #ProgrammingTips #TechCareers #Developers #CodingLife #TechCommunity #LearningInPublic #CodeNewbie #MicrosoftDotNet

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𝐈𝐄𝐧𝐮𝐦𝐞𝐫𝐚𝐛𝐥𝐞 𝐯𝐬 𝐈𝐐𝐮𝐞𝐫𝐲𝐚𝐛𝐥𝐞 𝐢𝐧 𝐂# 💡 𝐈𝐄𝐧𝐮𝐦𝐞𝐫𝐚𝐛𝐥𝐞 and 𝐈𝐐𝐮𝐞𝐫𝐲𝐚𝐛𝐥𝐞 are interfaces in C# for handling collections of data. 𝐈𝐄𝐧𝐮𝐦𝐞𝐫𝐚𝐛𝐥𝐞 serves as a fundamental interface suitable for in-memory collections, offering lazy loading and executing queries in-memory through LINQ extension methods. Conversely, 𝐈𝐐𝐮𝐞𝐫𝐲𝐚𝐛𝐥𝐞 is a generic interface that extends 𝐈𝐄𝐧𝐮𝐦𝐞𝐫𝐚𝐛𝐥𝐞 and is tailored for querying external data sources. It supports deferred execution, translating queries into a format understandable by the underlying data source, such as a database, thereby optimizing performance for large datasets. The key differences lie in their execution strategies, where 𝐈𝐄𝐧𝐮𝐦𝐞𝐫𝐚𝐛𝐥𝐞 processes queries in-memory, and 𝐈𝐐𝐮𝐞𝐫𝐲𝐚𝐛𝐥𝐞 defers execution and performs server-side processing, making it more suitable for scenarios involving significant data volumes and external data sources. The choice between them hinges on whether the data resides in memory or originates from an external source, influencing the trade-offs between flexibility and performance. 𝐈𝐟 𝐲𝐨𝐮 𝐟𝐢𝐧𝐝 𝐭𝐡𝐢𝐬 𝐮𝐬𝐞𝐟𝐮𝐥, 𝐫𝐞𝐩𝐨𝐬𝐭 ♻️ 𝐚𝐧𝐝 𝐬𝐩𝐫𝐞𝐚𝐝 𝐭𝐡𝐞 𝐤𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞. 𝐅𝐨𝐥𝐥𝐨𝐰 🔔 Adnan Maqbool Khan 𝐟𝐨𝐫 𝐦𝐨𝐫𝐞 𝐬𝐮𝐜𝐡 𝐜𝐨𝐧𝐭𝐞𝐧𝐭.

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🔥 Top .NET Core Interview Questions for .NET Developers 👨‍💻👩‍💻 Preparing for .NET Core interviews? These frequently asked questions will help you crack your next tech round confidently! 💥 📌 .NET Core Basics ▪️ What is .NET Core? ▪️ Difference between .NET Core, .NET Framework, and .NET 5/6/7/8? ▪️ What is the CLR and CoreCLR? ▪️ What is the CTS and CLS? ▪️ Explain managed vs unmanaged code. ▪️ What is the difference between SDK and Runtime in .NET Core? ▪️ What is Kestrel? ▪️ What are the advantages of .NET Core? ▪️ Explain the cross-platform capability of .NET Core. ▪️ How does garbage collection work in .NET Core? ⚙️ Dependency Injection ▪️ What is Dependency Injection? ▪️ How is DI implemented in .NET Core? ▪️ AddTransient vs AddScoped vs AddSingleton ▪️ How to inject services into controllers? ▪️ How to inject configuration and options? 🖇️ ASP.NET Core Architecture ▪️ What is middleware in ASP.NET Core? ▪️ Explain the request processing pipeline. ▪️ What is the Startup class? ▪️ What is the Program.cs file responsible for? ▪️ How to add custom middleware? ▪️ How does routing work in ASP.NET Core? 🔐 Authentication & Authorization ▪️ How is authentication handled in ASP.NET Core? ▪️ What is Identity in ASP.NET Core? ▪️ Difference between authentication and authorization. ▪️ What is policy-based authorization? ▪️ How to implement JWT authentication? 🗂️ Configuration & Logging ▪️ How is configuration managed in .NET Core? ▪️ What are the different configuration providers available? ▪️ How to use appsettings.json and environment-based configurations? ▪️ How does logging work in .NET Core? ▪️ What are built-in logging providers? 🗃️ Entity Framework Core ▪️ What is EF Core? ▪️ Difference between EF and EF Core. ▪️ How to configure DbContext in .NET Core? ▪️ What is Code-First vs Database-First in EF Core? ▪️ How to perform migrations in EF Core? 📡 API Development ▪️ How to create a Web API in ASP.NET Core? ▪️ What is [ApiController] attribute? ▪️ How to enable CORS in ASP.NET Core? ▪️ How to implement API versioning? ▪️ What is Swagger and how to integrate it? 🔄 Asynchronous Programming ▪️ What is async/await in C#? ▪️ Benefits of asynchronous programming in .NET Core? ▪️ Explain Task vs Thread. ▪️ How to handle exceptions in async methods? 🧪 Testing & Debugging ▪️ How to write unit tests in .NET Core? ▪️ What is xUnit? ▪️ How to mock dependencies during testing? ▪️ How to debug a .NET Core application? ▪️ How to use dependency injection in unit testing? 🔖 Follow me for more tech content on .NET | C# | Web API | Azure | SQL | Clean Architecture 💬 Comment “🚀” if you want detailed answers for these questions! #dotnet #aspnetcore #dotnetcore #csharp #softwaredevelopment #backenddeveloper #fullstackdeveloper #webdevelopment #entityframeworkcore #apidevelopment #azure #sqlserver #techinterview #codinginterview #developers #programming #interviewquestions

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Configure Visual Studio to use FILE SCOPED NAMESPACES BY DEFAULT 💡 File scoped namespaces are awesome and relate to how from C# 10 onwards our classes can be on the same nesting level as our namespaces without needing to be enclosed in them, for example -> namespace X.Y.Z; class X { } BUT ... how do we configure Visual Studio to use FILE SCOPED NAMESPACES BY DEFAULT when it creates a new class for us? Check out the image below for the relevant settings. Note though, when in a team environment it's better to use an EditorConfig file to ENFORCE SETTINGS across an entire solution or project for all developers. The relevant line if you just want file scoped namespaces as a preference is: csharp_style_namespace_declarations = file_scoped but if you actually want Visual Studio to cause compile time errors if you don’t use file-scoped namespaces the syntax would be: csharp_style_namespace_declarations = file_scoped:error Do you use file scoped namespaces regularly?

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🚀 .NET Interview Q&A – Real-World Scenarios Are you preparing for a .NET developer role? Many interviews now focus on practical scenarios, not just syntax. Here are 5 scenario-based questions to test your readiness: 1️⃣ How would you handle a memory leak in a .NET application? ✅ Use profiling tools like dotMemory or PerfView. Analyze object retention paths, dispose unmanaged resources, and avoid static references where not needed. 2️⃣ How do you implement caching in a .NET web API? ✅ Use IMemoryCache or IDistributedCache in .NET Core. Consider sliding/absolute expiration and invalidation strategy. 3️⃣ What’s your approach to handling large file uploads in ASP.NET Core? ✅ Stream the file directly to disk or cloud storage using buffered or streamed request reading. 4️⃣ How do you design a scalable architecture for high-traffic .NET web apps? ✅ Apply principles like microservices, caching layers, async processing, and queue-based messaging (e.g., Azure Service Bus). 5️⃣ How would you troubleshoot high CPU usage in a live .NET app? ✅ Use dotnet-trace, analyze thread stacks, GC stats, and performance counters. 🔍 Interviews today require you to think like a system designer, not just a coder. 📩 Let me know if you'd like a PDF version or infographic of these Q&As! #DotNet #SoftwareEngineering #TechInterviews #BackendDev #DotNetCore #InterviewTips #CleanCode #SystemDesign #LinkedInLearning #CSharp

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⚡ Boot an ASP.NET Core app inside your tests ⚠️ The Problem Many teams spin up containers or rely on shared servers for integration tests. That slows tests down, adds flakiness, and requires infrastructure. ✅ The Solution Subclass WebApplicationFactory to create a reusable Test Application instead of using the WebApplicationFactory directly. This allows you to pack shared configuration and features in the Test Application, making your test suite easier to evolve. 🧠 Under the Hood WebApplicationFactory runs your app entirely in memory, while giving you an HttpClient bound to the test server. 🎯 The Result The Test Application pattern: - Real ASP.NET Core pipeline (middleware, DI, routing). - No ports, no containers, no infrastructure. - Clean code, configurable for each test, reusable across test cases. This pattern brings integration-test confidence with near-unit-test speed. A pattern I leveraged in my latest book. 💬 Would you swap containers for in-memory test apps in your setup? 💬 Are you already using WebApplicationFactory? 💬 What are your success/failure stories? This post continues my series on HttpClient & integration testing. It expands the original proxy testing article with bite-sized tips and new topics. (Link in comments 👇) #dotnet #testing #aspnetcore

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💡 .𝗡𝗘𝗧 𝗧𝗶𝗽 - 𝗗𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝗰𝘆 𝗜𝗻𝗷𝗲𝗰𝘁𝗶𝗼𝗻 𝗶𝗻 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗖𝗼𝗿𝗲 If you're working with ASP.NET Core whether you're just getting started or aiming to sharpen your skills, understanding Dependency Injection (DI) is a must. In this article, I’ve broken things down in a simple, practical way: ✅ What Dependency Injection is and why it’s important ✅ The different service lifetimes—Singleton, Scoped, and Transient ✅ How to register and use services in your project ✅ Constructor injection, including the new primary constructors ✅ Tips and best practices to keep your code clean and easy to maintain I’ve also included how to use [FromServices] for action injection, and how to work with FromKeyedServices introduced in .NET 8. 👉 Read the full article here: https://lnkd.in/g4S7GER6 If you're working with ASP.NET Core, this one’s worth a read. 🧠 Let me know what you think — and don’t forget to subscribe to my newsletter .𝙉𝙀𝙏 𝙒𝙚𝙚𝙠𝙡𝙮 𝙏𝙞𝙥𝙨 𝙗𝙮 𝙋𝙤𝙤𝙧𝙣𝙖 to get more content like this delivered to your inbox! ♻️ If you found this helpful, consider reposting to help others in the community.  👉 Follow me, Poorna Soysa, and hit the 🔔 on my profile so you don’t miss upcoming .NET tips and deep dives. Thanks for reading — let’s keep learning .NET together!

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🚀 .NET Developers in 2025 – Expectations vs. Reality I’m speaking with both companies and developers daily, and one theme keeps coming up: 👉 The “ideal” .NET candidate profile many companies are aiming for doesn’t always match what’s available in today’s market. That gap is natural, but being aware of it helps both sides make better decisions. #dotnet #hiring #developers #softwaredevelopment #backend #fullstack #cloud #azure #careers #talentacquisition

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💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 - 𝐈𝐧𝐥𝐢𝐧𝐞 𝐀𝐫𝐫𝐚𝐲𝐬 🔥 💎𝐖𝐡𝐚𝐭 𝐢𝐬 𝐭𝐡𝐞 𝐈𝐧𝐥𝐢𝐧𝐞𝐀𝐫𝐫𝐚𝐲𝐬? ⚡ Introduced in C#12 and .NET 8.0, 𝐢𝐧𝐥𝐢𝐧𝐞 𝐚𝐫𝐫𝐚𝐲𝐬 enable us to create an array of fixed size in a struct type and this arrays are used by the runtime team and other library authors to improve performance in your apps. ⚡ In the console nothing changed functionality wise. A struct with an inline array should provide performance characteristics similar to an unsafe fixed size buffer. 💡 Unlike traditional dynamic arrays, 𝐢𝐧𝐥𝐢𝐧𝐞 𝐚𝐫𝐫𝐚𝐲𝐬 𝐫𝐞𝐬𝐢𝐝𝐞 𝐰𝐢𝐭𝐡𝐢𝐧 𝐭𝐡𝐞 𝐦𝐞𝐦𝐨𝐫𝐲 𝐬𝐩𝐚𝐜𝐞 𝐨𝐟 𝐚 𝐬𝐭𝐫𝐮𝐜𝐭. This unique placement unlocks several key benefits.  ✅ 𝐀 𝐟𝐞𝐰 𝐛𝐞𝐧𝐞𝐟𝐢𝐭𝐬 𝐨𝐟 𝐈𝐧𝐥𝐢𝐧𝐞 𝐀𝐫𝐫𝐚𝐲𝐬: 🔸 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞: By eliminating heap allocations and relying on stack memory, inline arrays significantly boost function execution speed and reduce overall memory pressure. 🔸 𝐒𝐢𝐦𝐩𝐥𝐢𝐟𝐢𝐞𝐝 𝐌𝐞𝐦𝐨𝐫𝐲 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: No more explicit allocations or garbage collection concerns. Inline arrays seamlessly integrate into structs, freeing you from memory management burdens. 🔸 𝐒𝐭𝐫𝐨𝐧𝐠𝐞𝐫 𝐓𝐲𝐩𝐞 𝐒𝐚𝐟𝐞𝐭𝐲: Compile-time checks for array size and element type add another layer of protection against runtime errors. 🎯 𝐖𝐡𝐚𝐭 𝐝𝐨 𝐲𝐨𝐮 𝐭𝐡𝐢𝐧𝐤 𝐚𝐛𝐨𝐮𝐭 𝐈𝐧𝐥𝐢𝐧𝐞 𝐀𝐫𝐫𝐚𝐲𝐬? #csharp #dotnet #programming #softwareengineering #softwaredevelopment

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🧠 Interview Question #34 – ActionResult vs ViewResult vs JsonResult in ASP.NET MVC In ASP.NET MVC, all of these return types are used in controllers — but when should you use each? 🔹 ActionResult Base class for all results Flexible → can return View, Json, Redirect, File, etc. public ActionResult Index() => View(); 🔹 ViewResult Returns a View (.cshtml) to the browser Specific for rendering HTML public ViewResult Index() => View("Home"); 🔹 JsonResult Returns JSON data (commonly used in APIs / AJAX calls) public JsonResult GetData() => Json(new { Name = "Ali", Age = 30 }); 💡 TL;DR Use ActionResult → when you need flexibility Use ViewResult → when rendering HTML views Use JsonResult → when building APIs / AJAX responses 📌 Pro Tip: In modern ASP.NET Core, prefer IActionResult or ActionResult<T> for more type-safety. 🔜 Next: Partial View vs View Component – What’s the difference? #DotNetArabia #DotNetDevelopers #AspNetMVC #CSharpDevelopers #BackendDevelopment #CleanCode #GulfDevelopers #SaudiTech #UAEDevelopers #MiddleEastTech

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10 ASP.NET Core Performance Tweaks Every Dev Should Know Most ASP.NET Core apps don’t need a full rewrite, They need these 🔟 micro-tweaks: 1. Use Minimal APIs for Lightweight Endpoints Ditch MVC where it’s overkill. Less overhead, faster routing. 2. Avoid .ToList() Too Early Let EF Core compose the query — don’t force it prematurely. 3. Enable Response Caching Static content? Cache it and save the CPU for real work. 4. Use AsNoTracking() for Read-Only Queries Need blazing read speed? Stop EF from tracking changes you don't need. 5. Trim Middleware Each middleware = overhead. Audit your pipeline. 6. Compress Responses (Gzip/Brotli) Small payload = faster load. Your API will thank you. 7. Benchmark with BenchmarkDotNet Guessing is for gamblers. Profile your bottlenecks. 8. Pool DbContext in High-Load Apps DbContext pooling = fewer allocations = faster throughput. 9. Tune Kestrel Server Settings Thread count, limits, and buffer sizes — tiny configs, big gains. 10. Use Output Caching in .NET 8 New feature, massive impact. Return cached results instantly. Which of these are you already using? 🔁 Repost to help a fellow dev. ❤️ Like if you learned something new. Stay updated, subscribe to my newsletter for more insights and updates: https://lnkd.in/erjer-J7 #dotnet #aspnetcore #performance #webapi #backend #csharp

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