How Goldcast scaled event orchestration to millions using Temporal

This post details how Goldcast uses Temporal Workflows for large-scale email delivery (100k-200k emails) with a smart batching strategy and resilient error handling, achieving a 99.9% success rate and reducing processing times by 50%. It also describes a two-phase Temporal Workflow design for event duplication: an atomic, rollback-safe main workflow for core operations and a separate asynchronous workflow for background tasks, improving success rates to 99.8% and reducing manual cleanup requests to zero.