Try to solve th problem

server/routers/ws/messageHandlers.ts

@@ -11,6 +11,7 @@ import {
     startNewtOfflineChecker,
     handleNewtDisconnectingMessage
 } from "../newt";
+import { startPingAccumulator } from "../newt/pingAccumulator";
 import {
     handleOlmRegisterMessage,
     handleOlmRelayMessage,
@@ -46,6 +47,10 @@ export const messageHandlers: Record<string, MessageHandler> = {
     "ws/round-trip/complete": handleRoundTripMessage
 };
 
+// Start the ping accumulator for all builds — it batches per-site online/lastPing
+// updates into periodic bulk writes, preventing connection pool exhaustion.
+startPingAccumulator();
+
 if (build != "saas") {
     startOlmOfflineChecker(); // this is to handle the offline check for olms
     startNewtOfflineChecker(); // this is to handle the offline check for newts

server/routers/ws/ws.ts

@@ -6,6 +6,7 @@ import { Socket } from "net";
 import { Newt, newts, NewtSession, olms, Olm, OlmSession, sites } from "@server/db";
 import { eq } from "drizzle-orm";
 import { db } from "@server/db";
+import { recordPing } from "@server/routers/newt/pingAccumulator";
 import { validateNewtSessionToken } from "@server/auth/sessions/newt";
 import { validateOlmSessionToken } from "@server/auth/sessions/olm";
 import { messageHandlers } from "./messageHandlers";
@@ -386,22 +387,14 @@ const setupConnection = async (
     // the same as modern newt clients.
     if (clientType === "newt") {
         const newtClient = client as Newt;
-        ws.on("ping", async () => {
+        ws.on("ping", () => {
             if (!newtClient.siteId) return;
-            try {
-                await db
-                    .update(sites)
-                    .set({
-                        online: true,
-                        lastPing: Math.floor(Date.now() / 1000)
-                    })
-                    .where(eq(sites.siteId, newtClient.siteId));
-            } catch (error) {
-                logger.error(
-                    "Error updating newt site online state on WS ping",
-                    { error }
-                );
-            }
+            // Record the ping in the accumulator instead of writing to the
+            // database on every WS ping frame. The accumulator flushes all
+            // pending pings in a single batched UPDATE every ~10s, which
+            // prevents connection pool exhaustion under load (especially
+            // with cross-region latency to the database).
+            recordPing(newtClient.siteId);
         });
     }