Diagnosing State Synchronization Lag in Reflex Applications
Learn how to diagnose and fix UI lag and state synchronization issues in Reflex by analyzing WebSocket traffic and optimizing state serialization.
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reflexReflex WebSocket State Delta Batching Limit
Reflex synchronizes frontend UI state with a backend Python State class through a persistent websocket connection managed by FastAPI and Next.js. Event handlers modify backend state, triggering delta serialization and transmission to the browser, where updates trigger reactive re-renders. The framework currently lacks a built-in configuration point to limit
Configurable Batching Window for Reflex State Updates
Developers need a way to control how Reflex groups state mutations into a single WebSocket push so that updates made both synchronously in an event handler and asynchronously via callbacks are guaranteed to be sent together, preventing split messages that can lead to inconsistent UI states. Currently, Reflex batches updates internally per event‑loop tick, bu