diff --git a/Cargo.lock b/Cargo.lock
index e4a14f53..c99c81e1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1132,7 +1132,7 @@ dependencies = [
 [[package]]
 name = "collab"
 version = "0.1.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=e08a66d3#e08a66d341889f9b3e0a79b47315a799d1b21ccc"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=c23dff3#c23dff3b58fa635a7fb4b5e2dbc18ebd76cfbd53"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1151,7 +1151,7 @@ dependencies = [
 [[package]]
 name = "collab-entity"
 version = "0.1.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=e08a66d3#e08a66d341889f9b3e0a79b47315a799d1b21ccc"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=c23dff3#c23dff3b58fa635a7fb4b5e2dbc18ebd76cfbd53"
 dependencies = [
  "anyhow",
  "bytes",
diff --git a/Cargo.toml b/Cargo.toml
index d0c11b4c..bfbebe39 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -132,8 +132,8 @@ lto = false
 opt-level = 3
 
 [patch.crates-io]
-collab = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "e08a66d3"  }
-collab-entity = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "e08a66d3" }
+collab = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "c23dff3"  }
+collab-entity = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "c23dff3" }
 
 # Comment the above and uncomment the below to use local version of collab by cloning the repo and placing it in libs folder
 #collab = { path = "libs/AppFlowy-Collab/collab" }
diff --git a/libs/client-api/src/collab_sync/sink.rs b/libs/client-api/src/collab_sync/sink.rs
index acdd4a1f..befe5b14 100644
--- a/libs/client-api/src/collab_sync/sink.rs
+++ b/libs/client-api/src/collab_sync/sink.rs
@@ -199,14 +199,17 @@ where
     // the fix interval.
     if let SinkStrategy::FixInterval(duration) = &self.config.strategy {
       let elapsed = self.instant.lock().await.elapsed();
-      // trace!(
-      //   "elapsed interval: {:?}, fix interval: {:?}",
-      //   elapsed,
-      //   duration
-      // );
+      // If the elapsed time is less than the fixed interval or if the remaining time until the fixed
+      // interval is less than the send timeout, return.
       if elapsed < *duration {
         return Ok(());
       }
+
+      if elapsed < self.config.send_timeout {
+        tokio::time::sleep(Duration::from_secs(1)).await;
+        self.notify();
+        return Ok(());
+      }
     }
 
     // Reset the instant if the strategy is [SinkStrategy::FixInterval].
diff --git a/libs/client-api/src/http.rs b/libs/client-api/src/http.rs
index 1f683d02..939945bc 100644
--- a/libs/client-api/src/http.rs
+++ b/libs/client-api/src/http.rs
@@ -449,12 +449,20 @@ impl Client {
       .refresh_token
       .as_str()
       .to_owned();
-    let access_token_resp = self
+    match self
       .gotrue_client
       .token(&Grant::RefreshToken(RefreshTokenGrant { refresh_token }))
-      .await?;
-    self.token.write().set(access_token_resp);
-    Ok(())
+      .await
+    {
+      Ok(access_token_resp) => {
+        self.token.write().set(access_token_resp);
+        Ok(())
+      },
+      Err(err) => {
+        self.token.write().unset();
+        Err(AppError::from(err))
+      },
+    }
   }
 
   #[instrument(level = "debug", skip_all, err)]
diff --git a/libs/client-api/src/notify.rs b/libs/client-api/src/notify.rs
index 7f3cd3ce..0f2bc5b9 100644
--- a/libs/client-api/src/notify.rs
+++ b/libs/client-api/src/notify.rs
@@ -42,8 +42,14 @@ impl ClientToken {
   /// - `token`: The new `AccessTokenResponse` to be set.
   pub(crate) fn set(&mut self, new_token: AccessTokenResponse) {
     tracing::trace!("Set new access token: {:?}", new_token);
+    let is_new = match &self.token {
+      None => true,
+      Some(old_token) => old_token.access_token != new_token.access_token,
+    };
     self.token = Some(new_token);
-    let _ = self.sender.send(TokenState::Refresh);
+    if is_new {
+      let _ = self.sender.send(TokenState::Refresh);
+    }
   }
 
   /// Unsets the current access token and notifies receivers of the invalidation.
@@ -54,7 +60,6 @@ impl ClientToken {
   #[allow(dead_code)]
   pub(crate) fn unset(&mut self) {
     if self.token.is_some() {
-      tracing::trace!("Set new access token: {:?}", self.token);
       self.token = None;
       let _ = self.sender.send(TokenState::Invalid);
     }
diff --git a/libs/client-api/src/ws/client.rs b/libs/client-api/src/ws/client.rs
index 3ed2556e..38aba734 100644
--- a/libs/client-api/src/ws/client.rs
+++ b/libs/client-api/src/ws/client.rs
@@ -18,7 +18,7 @@ use tokio_retry::strategy::FixedInterval;
 use tokio_retry::{Condition, RetryIf};
 use tokio_tungstenite::tungstenite::protocol::frame::coding::CloseCode;
 use tokio_tungstenite::tungstenite::protocol::CloseFrame;
-use tokio_tungstenite::tungstenite::Message;
+use tokio_tungstenite::tungstenite::{Error, Message};
 use tokio_tungstenite::MaybeTlsStream;
 use tracing::{debug, error, info, trace, warn};
 
@@ -157,6 +157,23 @@ impl WSClient {
     });
 
     let mut sink_rx = self.sender.subscribe();
+
+    let weak_state_notify = Arc::downgrade(&self.state_notify);
+    let handle_ws_error = move |error: &Error| {
+      error!("websocket error: {:?}", error);
+      match weak_state_notify.upgrade() {
+        None => {
+          error!("ws state_notify is dropped");
+        },
+        Some(state_notify) => match &error {
+          Error::ConnectionClosed | Error::AlreadyClosed => {
+            state_notify.lock().set_state(ConnectState::Disconnected);
+          },
+          _ => {},
+        },
+      }
+    };
+
     tokio::spawn(async move {
       loop {
         tokio::select! {
@@ -165,12 +182,9 @@ impl WSClient {
             break;
           },
          Ok(msg) = sink_rx.recv() => {
-           match sink.send(msg).await {
-              Ok(_) => {},
-              Err(e) => {
-                  error!("Failed to send message via websocket: {:?}", e);
-                  break;
-              },
+           if let Err(err) = sink.send(msg).await {
+              handle_ws_error(&err);
+              break;
             }
           }
         }
diff --git a/libs/client-api/src/ws/retry.rs b/libs/client-api/src/ws/retry.rs
index 6ec5a434..dc5738cc 100644
--- a/libs/client-api/src/ws/retry.rs
+++ b/libs/client-api/src/ws/retry.rs
@@ -5,7 +5,7 @@ use crate::ws::WSError;
 use tokio::net::TcpStream;
 use tokio_retry::Action;
 use tokio_tungstenite::{connect_async, MaybeTlsStream, WebSocketStream};
-use tracing::debug;
+use tracing::{debug, error};
 
 pub(crate) struct ConnectAction {
   addr: String,
@@ -27,10 +27,12 @@ impl Action for ConnectAction {
     Box::pin(async move {
       debug!("🔵Connecting to websocket: {}", cloned_addr);
       match connect_async(&cloned_addr).await {
-        Ok((stream, _response)) => Ok(stream),
+        Ok((stream, _response)) => {
+          debug!("connect success");
+          Ok(stream)
+        },
         Err(e) => {
-          //
-          tracing::error!("🔴connect error: {:?}", e.to_string());
+          error!("connect failed: {:?}", e.to_string());
           Err(e.into())
         },
       }
diff --git a/libs/realtime/src/client.rs b/libs/realtime/src/client.rs
index f1a3e3b3..81537f9b 100644
--- a/libs/realtime/src/client.rs
+++ b/libs/realtime/src/client.rs
@@ -12,6 +12,7 @@ use std::ops::Deref;
 use crate::collaborate::CollabServer;
 use crate::error::RealtimeError;
 
+use actix_web_actors::ws::ProtocolError;
 use database::collab::CollabStorage;
 use realtime_entity::collab_msg::CollabMessage;
 use std::time::{Duration, Instant};
@@ -141,8 +142,10 @@ where
   fn handle(&mut self, msg: Result<ws::Message, ws::ProtocolError>, ctx: &mut Self::Context) {
     let msg = match msg {
       Err(err) => {
-        error!("Websocket ProtocolError: {:?}", err);
-        ctx.stop();
+        error!("Websocket stream error: {}", err);
+        if let ProtocolError::Overflow = err {
+          ctx.stop();
+        }
         return;
       },
       Ok(msg) => msg,
@@ -162,7 +165,7 @@ where
         ctx.close(reason);
         ctx.stop();
       },
-      ws::Message::Continuation(_) => ctx.stop(),
+      ws::Message::Continuation(_) => {},
       ws::Message::Nop => (),
     }
   }
diff --git a/libs/realtime/src/collaborate/server.rs b/libs/realtime/src/collaborate/server.rs
index 707bdd82..95f47794 100644
--- a/libs/realtime/src/collaborate/server.rs
+++ b/libs/realtime/src/collaborate/server.rs
@@ -173,9 +173,8 @@ async fn broadcast_message<U>(
 {
   if let Some(client_stream) = client_streams.read().await.get(&client_msg.user) {
     trace!(
-      "[💭Server]: receives client message: [oid:{}|msg_id:{:?}]",
-      client_msg.content.object_id(),
-      client_msg.content.msg_id()
+      "[💭Server]: receives client message: {}",
+      client_msg.content,
     );
     match client_stream
       .stream_tx
diff --git a/src/api/ws.rs b/src/api/ws.rs
index 8663c5a9..19bfb81f 100644
--- a/src/api/ws.rs
+++ b/src/api/ws.rs
@@ -18,6 +18,8 @@ pub fn ws_scope() -> Scope {
   web::scope("/ws").service(establish_ws_connection)
 }
 
+const MAX_FRAME_SIZE: usize = 65_536; // 64 KiB
+
 #[get("/{token}/{device_id}")]
 pub async fn establish_ws_connection(
   request: HttpRequest,
@@ -26,7 +28,7 @@ pub async fn establish_ws_connection(
   state: Data<AppState>,
   server: Data<Addr<CollabServer<CollabStorageProxy, Arc<RealtimeUserImpl>>>>,
 ) -> Result<HttpResponse> {
-  tracing::info!("ws connect: {:?}", request);
+  tracing::info!("receive ws connect: {:?}", request);
   let (token, device_id) = path.into_inner();
   let auth = authorization_from_token(token.as_str(), &state)?;
   let user_uuid = UserUuid::from_auth(auth)?;
@@ -38,7 +40,10 @@ pub async fn establish_ws_connection(
     Duration::from_secs(state.config.websocket.client_timeout as u64),
   );
 
-  match ws::start(client, &request, payload) {
+  match ws::WsResponseBuilder::new(client, &request, payload)
+    .frame_size(MAX_FRAME_SIZE)
+    .start()
+  {
     Ok(response) => Ok(response),
     Err(e) => {
       tracing::error!("🔴ws connection error: {:?}", e);