Eventsauce Snapshotting Laravel Package

Product Decisions This Supports

• Performance Optimization: Enable event sourcing snapshotting to reduce aggregate reconstruction time for high-frequency or long-running aggregates (e.g., financial ledgers, user activity logs).
• Versioned State Management: Support backward-compatible schema evolution for aggregates (e.g., migrating from UserProfileV1 to UserProfileV2 without breaking reads).
• Conditional Snapshotting: Implement cost-efficient snapshotting (e.g., trigger snapshots only after 200 events or on demand) to balance storage vs. performance tradeoffs.
• Tech Stack Alignment: Leverage Doctrine DBAL for persistence if already using Doctrine, avoiding reinventing snapshot storage logic.
• Roadmap Flexibility: Future-proof for EventSauce ecosystem (e.g., integrating with Symfony or custom event handlers).

When to Consider This Package

• Avoid if:
  • Your aggregates are small/stateless (no need for snapshotting).
  • You’re not using EventSauce (incompatible with other event-sourcing libraries).
  • Your team lacks PHP/Doctrine expertise (steep learning curve for versioned snapshots).
  • You need real-time consistency (snapshots introduce eventual consistency).
• Look elsewhere if:
  • You require multi-model snapshots (e.g., MongoDB/Redis) → Use eventsauce-snapshotting forks or custom implementations.
  • You need built-in conflict resolution → Pair with EventSauce\EventSourcing\ConflictResolution.
  • Your PHP version is <8.2 (hard dependency).

How to Pitch It (Stakeholders)

For Executives: "This package lets us optimize performance for critical aggregates (e.g., order histories, audit logs) by storing snapshots—reducing load times by 80%+ for large datasets. It’s a low-risk extension of our existing EventSauce stack, with versioning support to safely evolve schemas. Minimal dev effort (30–60 mins setup) for significant scalability gains."

For Engineering: *"We’re adding Doctrine-backed snapshotting to EventSauce to:

1. Cut aggregate reconstruction time (e.g., from 500ms → 50ms for 10K events).
2. Support versioned states (e.g., UserProfileV1 → V2) without breaking reads.
3. Control snapshot frequency (e.g., trigger every 200 events or manually). Tradeoff: Adds ~100 lines of config but leverages our existing Doctrine setup. Docs are sparse but the API is intuitive for EventSauce users."*