






What React actually is
React is three things that work together.
1. A measurement layer. More than 140 things about your server are measured continuously; tick timing and its percentiles, garbage collection, scheduler backlog, entities by type, chunks, hoppers, redstone, fluids, physics, player ping, and the cost of every other plugin's event handlers.
2. Controls that act on those measurements. 48 performance features and 19 tweaks, each configured independently, each reading from the same pressure signal. They scale work back when the server is under load and restores it to default behavior once the server has the ability resources.
3. Somewhere to see it. Your action bar, in-game maps and map walls, PlaceholderAPI, or an authenticated web API. Same numbers, four surfaces.