Event Sourcing Projection Patterns

About

This skill provides a comprehensive framework and set of templates for implementing projection patterns within event-sourced systems. It assists developers in creating decoupled read models, handling real-time data synchronization, and building search indexes or dashboards from raw event data. By leveraging structured patterns for catch-up, persistent, and live projections, it ensures high-performance data retrieval and consistent state management across diverse storage engines like PostgreSQL and Elasticsearch, making it essential for complex backend microservices.

Key Features

• Standardized projection architecture for CQRS read-sides
• Ready-to-use templates for SQL and Elasticsearch integrations
• Support for Live, Catchup, Persistent, and Inline projection types
• Automated checkpointing logic to resume event processing after restarts
• Complex aggregation patterns for real-time reporting and analytics
• 0 GitHub stars

Use Cases

• Generating real-time business dashboards and daily sales aggregations
• Synchronizing relational databases with full-text search engines
• Developing high-performance read models for microservices using CQRS