Event Store Design

What it does

This skill helps design robust and scalable event store architectures specifically tailored for event-sourced applications. It provides guidance on choosing appropriate technologies, setting up schemas, and planning for scaling. The skill focuses on best practices for designing event stores to optimize real-time data processing and complex event sourcing scenarios.

When to use it

• Designing the infrastructure for event sourcing systems.
• Selecting between different event store technologies (e.g., EventStoreDB, PostgreSQL, Kafka, DynamoDB, Marten).
• Implementing custom event stores from scratch.
• Optimizing existing event storage and retrieval processes.
• Defining schemas for your event store data.
• Planning how to scale your event store as data volume grows.

Key capabilities

• Provides guidance on Event Store Architecture principles.
• Offers a comparison of different event store technologies, outlining their strengths and limitations.
• Includes example schema templates (e.g., PostgreSQL).
• Covers core concepts like append-only storage, ordering, versioning, subscriptions, and idempotency.
• Validates outcomes against best practices and provides actionable steps.

Example prompts

• "I'm designing an event store for a new application. What are the key considerations?"
• "Compare EventStoreDB and PostgreSQL as options for my event store."
• "Can you provide a schema template for an event store using PostgreSQL?"
• “What are best practices for ensuring idempotency in my event store?”

Tips & gotchas

• The skill requires clarification of goals, constraints, and required inputs before it can generate designs.
• It is not intended for tasks unrelated to event store design or when requiring tools outside the scope of event sourcing infrastructure.
• For detailed implementation examples, refer to the resources/implementation-playbook.md file.