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A modular monolith blends the simplicity of monolithic applications with the scalability of microservices. It offers:
– Fast development velocity
– Lower operational complexity
– Simplified deployment
– Easier transition to microservices
For example, during high-demand scenarios (e.g., a sale), you can dynamically scale a specific module without restructuring the entire application.
Read more here: Modular Monolith Architecture Guide
You Should Know:
1. Structuring a Modular Monolith in .NET
Use Domain-Driven Design (DDD) to separate modules:
dotnet new sln -n ModularMonolith dotnet new classlib -n SalesModule dotnet new classlib -n InventoryModule dotnet sln add SalesModule InventoryModule
2. Database Separation (Optional)
Use Entity Framework Core with separate DbContexts:
services.AddDbContext<SalesDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("SalesDb")));
services.AddDbContext<InventoryDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("InventoryDb")));
3. Deploying Modules Independently
Leverage Docker for containerization:
FROM mcr.microsoft.com/dotnet/aspnet:7.0 COPY ./SalesModule/bin/Release/net7.0/publish/ /app WORKDIR /app ENTRYPOINT ["dotnet", "SalesModule.dll"]
Deploy with:
docker build -t sales-module -f SalesModule.Dockerfile . docker run -d -p 5001:80 sales-module
4. Scaling with Kubernetes
Deploy a module as a separate pod:
apiVersion: apps/v1 kind: Deployment metadata: name: sales-module spec: replicas: 3 selector: matchLabels: app: sales template: metadata: labels: app: sales spec: containers: - name: sales image: sales-module:latest ports: - containerPort: 80
5. Monitoring Module Performance
Use Prometheus + Grafana:
Install Prometheus helm install prometheus prometheus-community/prometheus Install Grafana helm install grafana grafana/grafana
What Undercode Say:
Modular monoliths reduce complexity while retaining scalability. Key takeaways:
– Linux Command: Use `htop` to monitor module resource usage.
– Windows Command: Check module dependencies with tasklist /m.
– Database Migration: Use `dotnet ef migrations add InitialCreate` per module.
– Load Testing: Run `ab -n 10000 -c 100 http://localhost:5001` for module stress tests.
– Logging: Centralize logs with `journalctl -u your-module.service`.
Expected Output:
A scalable, maintainable architecture that transitions seamlessly to microservices when needed.
Further Reading:
References:
Reported By: Milan Jovanovic – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
