⚡ Event Sourcing with TuskLang & Go

Introduction

Event sourcing is the backbone of modern, auditable systems. TuskLang and Go let you build event-driven architectures with config-driven event stores, CQRS, and real-time projections—no more brittle state.

Key Features

- Event store management - Aggregates and CQRS - Projections and event replay - Versioning and schema evolution - Event-driven integration - Saga patterns

Example: Event Store Config

[event_store]
driver: postgres
uri: @env("EVENT_STORE_URI")
append: @go("events.Append")
replay: @go("events.Replay")

Go: Event Store Example

package events
import (
  "database/sql"
  _ "github.com/lib/pq"
)
func Append(event Event) error {
  // Insert event into DB
}
func Replay(aggregateID string) []Event {
  // Query and replay events
}

CQRS & Aggregates

- Use TuskLang config to separate read/write models - Go implements command/query handlers

Projections

[projection]
source: @go("events.Replay")
project: @go("projections.UpdateView")

Versioning

- Store event schema version in each event - Use Go for migration logic

Event-Driven Integration

- Use @http, @file.write, or @go for side effects

Saga Patterns

- Orchestrate long-running workflows with Go routines and TuskLang config

Best Practices

- Store all state as events - Use @metrics for event throughput - Secure event store with @env.secure

Troubleshooting

- Use Go logs for replay errors - Monitor event lag with @metrics

Conclusion

TuskLang + Go = event sourcing that’s robust, auditable, and ready for anything.