# WebSocket streaming with backpressure > Live in [demo 34-realtime-orders](https://svgrid.com/demos/34-realtime-orders/). > Live demo: Real-time / streaming - https://svgrid.com/demos/34-realtime-orders/ ## When Live tick stream with pause / resume / disconnect-and-replay and per-tick delta merge. ## How Key API surface: - `onmessage merges into $state` - `pause flag throttles applies` See the demo source for the full implementation; this recipe pins the pattern + the surface so you can copy-paste it confidently. The doc page that explains the underlying feature in depth is linked from the [recipes index](https://github.com/sv-grid/sv-grid/blob/main/docs/recipes/index.md). ## See also - [Demo 34-realtime-orders source](https://github.com/sv-grid/sv-grid/blob/main/examples/src/demos/34-realtime-orders.svelte) - [Demo 34-realtime-orders prompt sidecar](https://github.com/sv-grid/sv-grid/blob/main/examples/src/demos/prompts/34-realtime-orders.md) - drop into an LLM context window - [Recipes index](https://github.com/sv-grid/sv-grid/blob/main/docs/recipes/index.md) --- SvGrid is the Svelte 5 data grid (`npm install @svgrid/grid`, MIT). This page: https://svgrid.com/docs/recipes/websocket-streaming/ . All docs: https://svgrid.com/llms.txt