Synchronous Executors – Completing the Pub/Sub Picture

Short summary

Event-driven architectures excel at async communication, but many frontend operations—permission checks, localStorage reads, form validation—are fast and synchronous. Synchronous executors extend the event bus to handle these cases: components send messages to the bus, which immediately executes registered handlers and returns results, maintaining architectural decoupling without async complexity. The unified bus becomes a single entry point for all interactions, enabling consistent middleware, observability, and testability.

• •Synchronous executors extend event buses to handle operations that must return immediately (permission checks, local reads, validation)
• •Components depend only on message types, not concrete services, maintaining decoupling while avoiding async overhead
• •A unified bus covering both sync and async operations provides consistent middleware, observability, and testability

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