Hendrik Lösch

Modulith Instead of Monolith - Pragmatically Towards Microservices

Is there a middle ground between monoliths and microservices? Discover the modulith, a pattern for modernizing legacy systems without unnecessary complexity.

Modulith Instead of Monolith - Pragmatically Towards Microservices
#1about 3 minutes

Analyzing a complex 20-year-old legacy system

The initial state of a hardware control application was not a simple monolith but a messy mix of C# WinForms and C++ services.

#2about 2 minutes

Why traditional monoliths get a bad reputation

Unplanned monoliths often lead to tangled dependencies, deployment challenges, scaling issues, and code that is difficult to understand or modify.

#3about 4 minutes

Defining the modulith as a pragmatic alternative

A modulith combines the deployment simplicity of a monolith with the organizational benefits of modules based on business-bounded contexts.

#4about 3 minutes

Contrasting modulith and microservice architectures

While microservices offer independent deployment, a modulith optimizes for a single runtime environment, reducing network overhead and improving resource efficiency.

#5about 4 minutes

Designing modules with clear public interfaces

Modules are built around a domain model with public interfaces, allowing internal implementations to be swapped without affecting other parts of the system.

#6about 3 minutes

Managing product line complexity with modules

A modular architecture simplifies support for multiple product generations and hardware variations by enabling interchangeable component implementations.

#7about 6 minutes

Structuring the application with a layered architecture

The system is organized into distinct layers for hardware, assets (domain entities), features, and product configuration, all built on a shared foundation platform.

#8about 4 minutes

Executing an incremental refactoring to a modulith

The refactoring process involves wrapping the legacy system as the first module and then systematically extracting new, independent modules based on domain models.

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Matching moments

Considering the modular monolith for easier refactoring
22:11 MIN

Considering the modular monolith for easier refactoring

Modularity: Let's dig deeper

Focusing on modularity over architectural labels
36:33 MIN

Focusing on modularity over architectural labels

Monoliths: A love story

Why microservices often become a distributed monolith
02:52 MIN

Why microservices often become a distributed monolith

CQRS and Event Sourcing without the pixie dust

The flawed debate between monoliths and microservices
00:08 MIN

The flawed debate between monoliths and microservices

Microservices? Monoliths? An Annoying Discussion!

Conclusion: Focus on fundamentals beyond the hype
23:08 MIN

Conclusion: Focus on fundamentals beyond the hype

Microservices? Monoliths? An Annoying Discussion!

Why microservices fail without proper modularity
08:31 MIN

Why microservices fail without proper modularity

It’s all about the domain, honey ! Experiences from 15 years of Domain-Driven Design

Challenges of modernizing and scaling monolithic frontends
02:05 MIN

Challenges of modernizing and scaling monolithic frontends

Web-Fragments: incremental micro-frontends migration approach for enterprise

Introducing the modular monolith as a practical alternative
08:17 MIN

Introducing the modular monolith as a practical alternative

Stairway to Heaven - Scaling Frontends the Right Way

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