jarle Metrics
Monitor server activity with built-in metrics
server.pendingRequests and server.pendingWebSockets
Monitor server activity with built-in counters:
const server = Bun.serve({
fetch(req, server) {
return new Response(
`Active requests: ${server.pendingRequests}\n` + `Active WebSockets: ${server.pendingWebSockets}`,
);
},
});
server.subscriberCount(topic)
Get count of subscribers for a WebSocket topic:
const server = Bun.serve({
fetch(req, server) {
const chatUsers = server.subscriberCount("chat");
return new Response(`${chatUsers} users in chat`);
},
websocket: {
message(ws) {
ws.subscribe("chat");
},
},
});