diff --git a/Cargo.lock b/Cargo.lock
index 6a664473..aafa05c2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2080,7 +2080,7 @@ dependencies = [
 [[package]]
 name = "collab"
 version = "0.2.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=6f98f054a8306a8791b65bf1825091ab3fe60166#6f98f054a8306a8791b65bf1825091ab3fe60166"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=ec4f92941942f20c84dce142cd2eeafd44ca7362#ec4f92941942f20c84dce142cd2eeafd44ca7362"
 dependencies = [
  "anyhow",
  "arc-swap",
@@ -2105,7 +2105,7 @@ dependencies = [
 [[package]]
 name = "collab-document"
 version = "0.2.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=6f98f054a8306a8791b65bf1825091ab3fe60166#6f98f054a8306a8791b65bf1825091ab3fe60166"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=ec4f92941942f20c84dce142cd2eeafd44ca7362#ec4f92941942f20c84dce142cd2eeafd44ca7362"
 dependencies = [
  "anyhow",
  "arc-swap",
@@ -2125,7 +2125,7 @@ dependencies = [
 [[package]]
 name = "collab-entity"
 version = "0.2.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=6f98f054a8306a8791b65bf1825091ab3fe60166#6f98f054a8306a8791b65bf1825091ab3fe60166"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=ec4f92941942f20c84dce142cd2eeafd44ca7362#ec4f92941942f20c84dce142cd2eeafd44ca7362"
 dependencies = [
  "anyhow",
  "bytes",
@@ -2144,7 +2144,7 @@ dependencies = [
 [[package]]
 name = "collab-folder"
 version = "0.2.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=6f98f054a8306a8791b65bf1825091ab3fe60166#6f98f054a8306a8791b65bf1825091ab3fe60166"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=ec4f92941942f20c84dce142cd2eeafd44ca7362#ec4f92941942f20c84dce142cd2eeafd44ca7362"
 dependencies = [
  "anyhow",
  "arc-swap",
@@ -2228,7 +2228,7 @@ dependencies = [
 [[package]]
 name = "collab-user"
 version = "0.2.0"
-source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=6f98f054a8306a8791b65bf1825091ab3fe60166#6f98f054a8306a8791b65bf1825091ab3fe60166"
+source = "git+https://github.com/AppFlowy-IO/AppFlowy-Collab?rev=ec4f92941942f20c84dce142cd2eeafd44ca7362#ec4f92941942f20c84dce142cd2eeafd44ca7362"
 dependencies = [
  "anyhow",
  "collab",
diff --git a/Cargo.toml b/Cargo.toml
index 21925e37..ca3bfc75 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -283,11 +283,11 @@ debug = true
 [patch.crates-io]
 # It's diffcult to resovle different version with the same crate used in AppFlowy Frontend and the Client-API crate.
 # So using patch to workaround this issue.
-collab = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "6f98f054a8306a8791b65bf1825091ab3fe60166" }
-collab-entity = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "6f98f054a8306a8791b65bf1825091ab3fe60166" }
-collab-folder = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "6f98f054a8306a8791b65bf1825091ab3fe60166" }
-collab-document = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "6f98f054a8306a8791b65bf1825091ab3fe60166" }
-collab-user = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "6f98f054a8306a8791b65bf1825091ab3fe60166" }
+collab = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "ec4f92941942f20c84dce142cd2eeafd44ca7362" }
+collab-entity = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "ec4f92941942f20c84dce142cd2eeafd44ca7362" }
+collab-folder = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "ec4f92941942f20c84dce142cd2eeafd44ca7362" }
+collab-document = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "ec4f92941942f20c84dce142cd2eeafd44ca7362" }
+collab-user = { git = "https://github.com/AppFlowy-IO/AppFlowy-Collab", rev = "ec4f92941942f20c84dce142cd2eeafd44ca7362" }
 
 [features]
 history = []
diff --git a/libs/app-error/src/lib.rs b/libs/app-error/src/lib.rs
index a59b1b0d..e2a47176 100644
--- a/libs/app-error/src/lib.rs
+++ b/libs/app-error/src/lib.rs
@@ -316,6 +316,7 @@ pub enum ErrorCode {
   #[cfg(feature = "sqlx_error")]
   SqlxArgEncodingError = 1035,
   InvalidContentType = 1036,
+  SingleUploadLimitExceeded = 1037,
 }
 
 impl ErrorCode {
diff --git a/libs/client-api/src/native/http_native.rs b/libs/client-api/src/native/http_native.rs
index 18b4ea44..8ab165b0 100644
--- a/libs/client-api/src/native/http_native.rs
+++ b/libs/client-api/src/native/http_native.rs
@@ -25,10 +25,11 @@ use std::future::Future;
 use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
 use std::pin::Pin;
 use std::sync::atomic::Ordering;
+
 use std::task::{Context, Poll};
 use std::time::Duration;
 use tokio_retry::strategy::{ExponentialBackoff, FixedInterval};
-use tokio_retry::{Retry, RetryIf};
+use tokio_retry::{Condition, RetryIf};
 use tracing::{event, info, instrument, trace};
 
 pub use infra::file_util::ChunkedBytes;
@@ -138,7 +139,7 @@ impl Client {
     // 2 seconds, 4 seconds, 8 seconds
     let retry_strategy = ExponentialBackoff::from_millis(2).factor(1000).take(3);
     let action = GetCollabAction::new(self.clone(), params);
-    Retry::spawn(retry_strategy, action).await
+    RetryIf::spawn(retry_strategy, action, RetryGetCollabCondition).await
   }
 
   #[instrument(level = "debug", skip_all, err)]
@@ -391,3 +392,10 @@ where
 
   Ok(Bytes::from(chunk))
 }
+
+struct RetryGetCollabCondition;
+impl Condition<AppResponseError> for RetryGetCollabCondition {
+  fn should_retry(&mut self, error: &AppResponseError) -> bool {
+    !error.is_record_not_found()
+  }
+}
diff --git a/services/appflowy-collaborate/src/api.rs b/services/appflowy-collaborate/src/api.rs
index 45cd94bf..36b6ba5c 100644
--- a/services/appflowy-collaborate/src/api.rs
+++ b/services/appflowy-collaborate/src/api.rs
@@ -18,6 +18,7 @@ use tokio_stream::StreamExt;
 use tracing::{debug, error, event, instrument, trace};
 
 use app_error::AppError;
+use authentication::jwt::{authorization_from_token, UserUuid};
 use collab_rt_entity::user::{AFUserChange, RealtimeUser, UserMessage};
 use collab_rt_entity::{HttpRealtimeMessage, RealtimeMessage};
 use shared_entity::response::{AppResponse, AppResponseError};
@@ -31,7 +32,6 @@ use crate::compression::{
   decompress, CompressionType, X_COMPRESSION_BUFFER_SIZE, X_COMPRESSION_TYPE,
 };
 use crate::state::AppState;
-use authentication::jwt::{authorization_from_token, UserUuid};
 
 pub fn ws_scope() -> Scope {
   web::scope("/ws").service(web::resource("/v1").route(web::get().to(establish_ws_connection_v1)))
@@ -76,6 +76,10 @@ pub async fn establish_ws_connection_v1(
     },
   };
 
+  if client_version < state.config.websocket.min_client_version {
+    return Err(AppError::Connect("Client version is too low".to_string()).into());
+  }
+
   start_connect(
     &request,
     payload,
diff --git a/services/appflowy-collaborate/src/collab/disk_cache.rs b/services/appflowy-collaborate/src/collab/disk_cache.rs
index a3d21d88..916d9da0 100644
--- a/services/appflowy-collaborate/src/collab/disk_cache.rs
+++ b/services/appflowy-collaborate/src/collab/disk_cache.rs
@@ -4,7 +4,7 @@ use std::time::Duration;
 use anyhow::anyhow;
 use collab::entity::EncodedCollab;
 use collab_entity::CollabType;
-use sqlx::{PgPool, Transaction};
+use sqlx::{Error, PgPool, Transaction};
 use tokio::time::sleep;
 use tracing::{event, instrument, Level};
 use uuid::Uuid;
@@ -100,19 +100,21 @@ impl CollabDiskCache {
           .await?;
         },
         Err(e) => {
-          // Handle non-retryable errors immediately
-          if matches!(e, sqlx::Error::RowNotFound) {
-            let msg = format!("Can't find the row for query: {:?}", query);
-            return Err(AppError::RecordNotFound(msg));
-          }
-
-          // Increment attempts and retry if below MAX_ATTEMPTS and the error is retryable
-          if attempts < MAX_ATTEMPTS - 1 && matches!(e, sqlx::Error::PoolTimedOut) {
-            attempts += 1;
-            sleep(Duration::from_millis(500 * attempts as u64)).await;
-            continue;
-          } else {
-            return Err(e.into());
+          match e {
+            Error::RowNotFound => {
+              let msg = format!("Can't find the row for query: {:?}", query);
+              return Err(AppError::RecordNotFound(msg));
+            },
+            _ => {
+              // Increment attempts and retry if below MAX_ATTEMPTS and the error is retryable
+              if attempts < MAX_ATTEMPTS - 1 && matches!(e, sqlx::Error::PoolTimedOut) {
+                attempts += 1;
+                sleep(Duration::from_millis(500 * attempts as u64)).await;
+                continue;
+              } else {
+                return Err(e.into());
+              }
+            },
           }
         },
       }
diff --git a/services/appflowy-collaborate/src/config.rs b/services/appflowy-collaborate/src/config.rs
index fe807f62..a595f887 100644
--- a/services/appflowy-collaborate/src/config.rs
+++ b/services/appflowy-collaborate/src/config.rs
@@ -3,6 +3,7 @@ use std::str::FromStr;
 
 use anyhow::Context;
 use secrecy::Secret;
+use semver::Version;
 use serde::Deserialize;
 use sqlx::postgres::{PgConnectOptions, PgSslMode};
 
@@ -70,6 +71,7 @@ impl AISettings {
 pub struct WebsocketSetting {
   pub heartbeat_interval: u8,
   pub client_timeout: u8,
+  pub min_client_version: Version,
 }
 
 #[derive(Clone, Debug)]
@@ -140,6 +142,7 @@ pub fn get_configuration() -> Result<Config, anyhow::Error> {
     websocket: WebsocketSetting {
       heartbeat_interval: get_env_var("APPFLOWY_WEBSOCKET_HEARTBEAT_INTERVAL", "6").parse()?,
       client_timeout: get_env_var("APPFLOWY_WEBSOCKET_CLIENT_TIMEOUT", "60").parse()?,
+      min_client_version: get_env_var("APPFLOWY_WEBSOCKET_CLIENT_MIN_VERSION", "0.5.0").parse()?,
     },
     db_settings: DatabaseSetting {
       pg_conn_opts: PgConnectOptions::from_str(&get_env_var(
diff --git a/services/appflowy-collaborate/src/group/cmd.rs b/services/appflowy-collaborate/src/group/cmd.rs
index 5bfc8480..32d0bdf6 100644
--- a/services/appflowy-collaborate/src/group/cmd.rs
+++ b/services/appflowy-collaborate/src/group/cmd.rs
@@ -8,7 +8,7 @@ use tracing::{instrument, trace, warn};
 
 use access_control::collab::RealtimeAccessControl;
 use collab_rt_entity::user::RealtimeUser;
-use collab_rt_entity::{ClientCollabMessage, ServerCollabMessage, SinkMessage};
+use collab_rt_entity::{AckCode, ClientCollabMessage, ServerCollabMessage, SinkMessage};
 use collab_rt_entity::{CollabAck, RealtimeMessage};
 use database::collab::CollabStorage;
 
@@ -155,7 +155,11 @@ where
         let origin = first_message.origin().clone();
         let msg_id = first_message.msg_id();
         let object_id = first_message.object_id().to_string();
-        let ack = CollabAck::new(origin, object_id, msg_id, 0);
+
+        // when the group with given id is not found and the the first message is not init sync.
+        // Return AckCode::CannotApplyUpdate to the client and then client will send the init sync message.
+        let ack =
+          CollabAck::new(origin, object_id, msg_id, 0).with_code(AckCode::CannotApplyUpdate);
         entry
           .value()
           .send_message(ServerCollabMessage::ClientAck(ack).into())
diff --git a/services/appflowy-collaborate/src/group/group_init.rs b/services/appflowy-collaborate/src/group/group_init.rs
index 2bc58c98..d759e234 100644
--- a/services/appflowy-collaborate/src/group/group_init.rs
+++ b/services/appflowy-collaborate/src/group/group_init.rs
@@ -11,7 +11,7 @@ use collab_entity::CollabType;
 use dashmap::DashMap;
 use futures_util::{SinkExt, StreamExt};
 use tokio::sync::{mpsc, RwLock};
-use tracing::{error, event, trace};
+use tracing::{error, event, info, trace};
 use yrs::updates::decoder::Decode;
 use yrs::updates::encoder::Encode;
 use yrs::Update;
@@ -200,7 +200,26 @@ impl CollabGroup {
       modified_at.elapsed().as_secs() > 60 * 60
     } else {
       let elapsed_secs = modified_at.elapsed().as_secs();
-      elapsed_secs > self.timeout_secs() && self.subscribers.is_empty()
+      if elapsed_secs > self.timeout_secs() {
+        // Mark the group as inactive if it has been inactive for more than 3 hours, regardless of the number of subscribers.
+        // Otherwise, return `true` only if there are no subscribers remaining in the group.
+        // If a client modifies a group that has already been marked as inactive (removed),
+        // the client will automatically send an initialization sync to reinitialize the group.
+        const MAXIMUM_SECS: u64 = 3 * 60 * 60;
+        if elapsed_secs > MAXIMUM_SECS {
+          info!(
+            "Group:{} is inactive for {} seconds, subscribers: {}",
+            self.object_id,
+            modified_at.elapsed().as_secs(),
+            self.subscribers.len()
+          );
+          true
+        } else {
+          self.subscribers.is_empty()
+        }
+      } else {
+        false
+      }
     }
   }
 
diff --git a/services/appflowy-collaborate/src/indexer/provider.rs b/services/appflowy-collaborate/src/indexer/provider.rs
index 06ea8c67..4288720a 100644
--- a/services/appflowy-collaborate/src/indexer/provider.rs
+++ b/services/appflowy-collaborate/src/indexer/provider.rs
@@ -64,7 +64,7 @@ impl IndexerProvider {
 
   fn get_unindexed_collabs(
     &self,
-  ) -> Pin<Box<dyn Stream<Item = Result<UnindexedCollab, anyhow::Error>>>> {
+  ) -> Pin<Box<dyn Stream<Item = Result<UnindexedCollab, anyhow::Error>> + Send>> {
     let db = self.db.clone();
     Box::pin(try_stream! {
       let collabs = get_collabs_without_embeddings(&db).await?;
diff --git a/services/appflowy-collaborate/src/rt_server.rs b/services/appflowy-collaborate/src/rt_server.rs
index a4fd4a23..06d81c69 100644
--- a/services/appflowy-collaborate/src/rt_server.rs
+++ b/services/appflowy-collaborate/src/rt_server.rs
@@ -1,11 +1,10 @@
+use anyhow::Result;
+use dashmap::mapref::entry::Entry;
+use dashmap::DashMap;
 use std::future::Future;
 use std::pin::Pin;
 use std::sync::{Arc, Weak};
 use std::time::Duration;
-
-use anyhow::Result;
-use dashmap::mapref::entry::Entry;
-use dashmap::DashMap;
 use tokio::sync::Notify;
 use tokio::time::interval;
 use tracing::{error, info, trace};
@@ -254,7 +253,7 @@ where
 }
 
 fn spawn_handle_unindexed_collabs(indexer_provider: Arc<IndexerProvider>) {
-  tokio::task::spawn_local(IndexerProvider::handle_unindexed_collabs(indexer_provider));
+  tokio::spawn(IndexerProvider::handle_unindexed_collabs(indexer_provider));
 }
 
 fn spawn_period_check_inactive_group<S, AC>(
diff --git a/src/api/ws.rs b/src/api/ws.rs
index 3372d7aa..d23b4e40 100644
--- a/src/api/ws.rs
+++ b/src/api/ws.rs
@@ -26,7 +26,7 @@ use crate::state::AppState;
 
 pub fn ws_scope() -> Scope {
   web::scope("/ws")
-    .service(establish_ws_connection)
+    //.service(establish_ws_connection)
     .service(web::resource("/v1").route(web::get().to(establish_ws_connection_v1)))
 }
 const MAX_FRAME_SIZE: usize = 65_536; // 64 KiB
@@ -86,6 +86,10 @@ pub async fn establish_ws_connection_v1(
     },
   };
 
+  if client_version < state.config.websocket.min_client_version {
+    return Err(AppError::Connect("Client version is too low".to_string()).into());
+  }
+
   start_connect(
     &request,
     payload,
diff --git a/src/config/config.rs b/src/config/config.rs
index c0ad3fc1..349c8ec1 100644
--- a/src/config/config.rs
+++ b/src/config/config.rs
@@ -1,11 +1,14 @@
-use anyhow::Context;
-use infra::env_util::get_env_var;
-use secrecy::{ExposeSecret, Secret};
-use serde::Deserialize;
-use sqlx::postgres::{PgConnectOptions, PgSslMode};
 use std::fmt::Display;
 use std::str::FromStr;
 
+use anyhow::Context;
+use secrecy::{ExposeSecret, Secret};
+use semver::Version;
+use serde::Deserialize;
+use sqlx::postgres::{PgConnectOptions, PgSslMode};
+
+use infra::env_util::get_env_var;
+
 #[derive(Clone, Debug)]
 pub struct Config {
   pub app_env: Environment,
@@ -166,6 +169,7 @@ pub fn get_configuration() -> Result<Config, anyhow::Error> {
     websocket: WebsocketSetting {
       heartbeat_interval: get_env_var("APPFLOWY_WEBSOCKET_HEARTBEAT_INTERVAL", "6").parse()?,
       client_timeout: get_env_var("APPFLOWY_WEBSOCKET_CLIENT_TIMEOUT", "60").parse()?,
+      min_client_version: get_env_var("APPFLOWY_WEBSOCKET_CLIENT_MIN_VERSION", "0.5.0").parse()?,
     },
     redis_uri: get_env_var("APPFLOWY_REDIS_URI", "redis://localhost:6379").into(),
     s3: S3Setting {
@@ -239,4 +243,5 @@ impl FromStr for Environment {
 pub struct WebsocketSetting {
   pub heartbeat_interval: u8,
   pub client_timeout: u8,
+  pub min_client_version: Version,
 }