{"id":56,"date":"2025-10-06T12:09:41","date_gmt":"2025-10-06T12:09:41","guid":{"rendered":"https:\/\/blog.vigplanet.com\/?p=56"},"modified":"2025-10-06T13:26:21","modified_gmt":"2025-10-06T13:26:21","slug":"monolith-vs-microservices-in-net-core","status":"publish","type":"post","link":"https:\/\/blog.vigplanet.com\/?p=56","title":{"rendered":"Monolith vs Microservices in .NET Core"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Monolith vs Microservices in .NET Core<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Monolithic Architecture<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Definition<\/strong>: A single, unified codebase where all modules (UI, business logic, data access) are part of one large application.<\/li>\n\n\n\n<li><strong>Deployment<\/strong>: Deployed as a single unit (e.g., one\u00a0<code>.exe<\/code>\u00a0or\u00a0<code>.dll<\/code>).<\/li>\n\n\n\n<li><strong>Scaling<\/strong>: Scales by cloning the entire application (vertical\/horizontal scaling).<\/li>\n\n\n\n<li><strong>Communication<\/strong>: Internal method calls (no network).<\/li>\n\n\n\n<li><strong>Tech Stack<\/strong>: Typically limited to a single framework\/runtime.<\/li>\n\n\n\n<li><strong>Example in .NET Core<\/strong>:\n<ul class=\"wp-block-list\">\n<li>An\u00a0<strong>ASP.NET Core MVC app<\/strong>\u00a0with controllers, services, and EF Core all in the same project.<\/li>\n\n\n\n<li>Single database, one codebase, deployed to IIS\/Kestrel.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Microservices Architecture<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Definition<\/strong>: A collection of small, independent services, each responsible for a specific business function.<\/li>\n\n\n\n<li><strong>Deployment<\/strong>: Each service runs independently (often in Docker containers).<\/li>\n\n\n\n<li><strong>Scaling<\/strong>: Scale\u00a0<strong>individual services<\/strong>\u00a0based on demand.<\/li>\n\n\n\n<li><strong>Communication<\/strong>: Via APIs (REST, gRPC, message queues).<\/li>\n\n\n\n<li><strong>Tech Stack<\/strong>: Each service can use different frameworks\/languages (polyglot).<\/li>\n\n\n\n<li><strong>Example in .NET Core<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Separate\u00a0<strong>Order Service<\/strong>,\u00a0<strong>Payment Service<\/strong>,\u00a0<strong>User Service<\/strong>.<\/li>\n\n\n\n<li>Each service is its own ASP.NET Core Web API with its\u00a0<strong>own database<\/strong>\u00a0(Database-per-service).<\/li>\n\n\n\n<li>Uses API Gateway (Ocelot\/YARP) for routing.<\/li>\n\n\n\n<li>Runs in Docker &amp; Kubernetes.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd39 Key Differences<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Monolith (.NET Core)<\/th><th>Microservices (.NET Core)<\/th><\/tr><\/thead><tbody><tr><td><strong>Codebase<\/strong><\/td><td>Single, large project<\/td><td>Multiple smaller projects (per service)<\/td><\/tr><tr><td><strong>Deployment<\/strong><\/td><td>One unit<\/td><td>Independent deployments<\/td><\/tr><tr><td><strong>Scalability<\/strong><\/td><td>Entire app must scale<\/td><td>Scale only required service<\/td><\/tr><tr><td><strong>Database<\/strong><\/td><td>Usually one shared DB<\/td><td>Separate DB per service (Database-per-service pattern)<\/td><\/tr><tr><td><strong>Technology<\/strong><\/td><td>One stack (e.g., only .NET Core + SQL Server)<\/td><td>Polyglot (C#, Node.js, Python, SQL\/NoSQL)<\/td><\/tr><tr><td><strong>Communication<\/strong><\/td><td>In-process calls<\/td><td>REST, gRPC, Message Bus (RabbitMQ, Kafka, Azure SB)<\/td><\/tr><tr><td><strong>Fault Isolation<\/strong><\/td><td>A bug can crash whole app<\/td><td>Failures isolated to one service<\/td><\/tr><tr><td><strong>DevOps<\/strong><\/td><td>Easier to deploy<\/td><td>Requires CI\/CD pipelines, containers, orchestration<\/td><\/tr><tr><td><strong>Best For<\/strong><\/td><td>Small\/medium apps with simple domain<\/td><td>Large, complex, high-scale, distributed systems<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd39 When to Use What?<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2705\u00a0<strong>Monolith<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Small to medium apps.<\/li>\n\n\n\n<li>Simple business logic.<\/li>\n\n\n\n<li>Quick delivery required.<\/li>\n\n\n\n<li>Team size is small.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u2705\u00a0<strong>Microservices<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Large enterprise systems.<\/li>\n\n\n\n<li>Need for independent scaling &amp; deployments.<\/li>\n\n\n\n<li>Multiple teams working on different modules.<\/li>\n\n\n\n<li>Cloud-native, containerized solutions.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\ud83d\udca1&nbsp;<strong>Interview Tip:<\/strong><br>If asked in an interview, explain&nbsp;<strong>the trade-offs<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>Monolith is simpler but harder to scale\/maintain as it grows.<\/em><\/li>\n\n\n\n<li><em>Microservices bring scalability and flexibility but add complexity in communication, monitoring, and DevOps.<\/em><\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Monolith vs Microservices in .NET Core 1. Monolithic Architecture 2. Microservices Architecture \ud83d\udd39 Key Differences Feature Monolith (.NET Core) Microservices (.NET Core) Codebase Single, large project Multiple smaller projects (per service) Deployment One unit Independent deployments Scalability Entire app must scale Scale only required service Database Usually one shared DB Separate DB per service (Database-per-service<\/p>\n","protected":false},"author":1,"featured_media":92,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[9],"class_list":["post-56","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-net-core","tag-monolith-vs-microservices-in-net-core"],"_links":{"self":[{"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/posts\/56","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=56"}],"version-history":[{"count":1,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/posts\/56\/revisions"}],"predecessor-version":[{"id":57,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/posts\/56\/revisions\/57"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=\/wp\/v2\/media\/92"}],"wp:attachment":[{"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=56"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=56"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.vigplanet.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=56"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}