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Building a PHP CLI tool using DDD and Event Sourcing. Part 2: the model

The model is where the software meets the domain. The goal of the model is to identify and express the use cases and constraints that will be built into the software, using schemas and diagrams. It is where we extract the essential concepts from the domain and where we consolidate the ubiquitous language.

Building a PHP CLI tool using DDD and Event Sourcing. Part 1: the domain

We continue our exploration of DDD with the expression of the domain. A domain is a group of related concepts and ideas about a field, articulated by experts in that field. Expressing the domain is a way to get familiar with its lexical field and to start building the ubiquitous language, the language to be used consistently in the model and across all communications.

Building a PHP CLI tool using DDD and Event Sourcing. Introduction: why?

This is the introduction to a blog series about building a PHP CLI tool to help me track my crypto activity. I haven't built anything yet – the goal is to document my progress as I go, publicly. I intend to use Laravel Zero, Event Sourcing, and to follow a Domain-Driven Design approach.