I'm Shogo Tsuneto, a software engineer passionate about Event Sourcing, CQRS, and modern microservices architecture. My repositories focus on building clean, minimal, and extensible tools for event-driven systems and schema-first development.

Building blocks for event-driven architecture with clean Go interfaces:

A lightweight Go library providing a unified interface for event stores across various databases. Features append-only storage, cursor-based consumption, and multiple backend adapters (PostgreSQL, In-Memory, DynamoDB in progress).

Minimal in-memory event-sourced state management for Go with clean State interface constraint design. Type-safe event handling with generic constraints and thread-safe operations.

A minimal event worker that repeatedly pulls events from an event source and invokes user-provided projection logic. Users control checkpoint storage and transactional atomicity.

A lightweight Go server with YAML-based configuration for database connections and query definitions. Create read-only database APIs without writing custom code for each query.

Schema-first development tools and patterns for building distributed actor systems:

A standalone code generator for creating Go interfaces, types, and factory functions from OpenAPI 3.0 specifications for Dapr actors. Enables schema-first development with type-safe code generation.

A comprehensive demo of Dapr actors demonstrating state management, method invocation patterns, and CQRS architecture. Features authentication middleware, multiple actor types, and complete Docker setup.

Utilities for modern API development and testing:

A lightweight mock JSON Web Key Set (JWKS) service for backend API development and testing. Single binary (~10MB) with dynamic JWT claims, multiple keys support, and OAuth 2.0 token introspection.

💡 These repositories work together to provide a complete toolkit for building event-sourced microservices with Dapr, from foundational event stores to complete applications with authentication.