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Derek Comartin

Multi-tenant Architecture for SaaS

When building Software as a Service (SaaS) you’ll often need to use a Multi-tenant Architecture. There are many different ways that you can segregate compute and data storage in a multi-tenant architecture. Data storage can be in a silo or partitioned. Compute can be pooled or siloed. And both together you can create lanes for groups of tenants. In this architecture, having the identity of each request is critical in being able to route a request all the way through to the right services and resources. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my… Read More »Multi-tenant Architecture for SaaS

Leaking Value Objects from your Domain

Value Objects are a great way to explicitly capture concepts within your domain. They are immutable, always in a valid state, provide behavior, and are defined by their value. This sounds a lot like Messages (Commands, Events) that are also immutable and should be in a valid state. However, exposing your Value Objects by using them within Commands or Events can have a negative impact on your ability to evolve your domain model. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this video showing everything that is in this post. Value Objects… Read More »Leaking Value Objects from your Domain

Data Consistency Between Microservices

In a system where many users are collaborating concurrently, it can be difficult to manage data consistency between microservices. Do you need consistency? Maybe, maybe not. It’s a discussion to have with the business about the impact of inconsistent data. If it is important to have consistency, then one solution to this problem is by not having it in the first place. When data is required from another service for business logic, then it’s possibly a sign that you have some misaligned boundaries. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this… Read More »Data Consistency Between Microservices