diff --git a/frontend/Makefile.toml b/frontend/Makefile.toml
index 4b1c4f9367..9f3d9ea57f 100644
--- a/frontend/Makefile.toml
+++ b/frontend/Makefile.toml
@@ -10,6 +10,7 @@ extend = [
 ]
 
 [env]
+RUST_LOG = "info"
 CARGO_MAKE_EXTEND_WORKSPACE_MAKEFILE = true
 CARGO_MAKE_CRATE_FS_NAME = "dart_ffi"
 CARGO_MAKE_CRATE_NAME = "dart-ffi"
@@ -22,6 +23,7 @@ SDK_EXT = "a"
 APP_ENVIRONMENT = "local"
 
 [env.development-mac]
+RUST_LOG = "trace"
 TARGET_OS = "macos"
 RUST_COMPILE_TARGET = "x86_64-apple-darwin"
 BUILD_FLAG = "debug"
diff --git a/frontend/app_flowy/.vscode/launch.json b/frontend/app_flowy/.vscode/launch.json
index d0b93e3b54..c7236062fd 100644
--- a/frontend/app_flowy/.vscode/launch.json
+++ b/frontend/app_flowy/.vscode/launch.json
@@ -10,6 +10,20 @@
             "program": "${workspaceRoot}/lib/main.dart",
             "type": "dart",
             "preLaunchTask": "build_flowy_sdk",
+            "env":{
+                "RUST_LOG":"info",
+            },
+            "cwd": "${workspaceRoot}"
+        },
+        {
+            "name": "app_flowy(trace)",
+            "request": "launch",
+            "program": "${workspaceRoot}/lib/main.dart",
+            "type": "dart",
+            "preLaunchTask": "build_flowy_sdk",
+            "env":{
+                "RUST_LOG":"trace",
+            },
             "cwd": "${workspaceRoot}"
         },
         {
diff --git a/frontend/rust-lib/flowy-core/src/context.rs b/frontend/rust-lib/flowy-core/src/context.rs
index bd009d1212..4df573515a 100644
--- a/frontend/rust-lib/flowy-core/src/context.rs
+++ b/frontend/rust-lib/flowy-core/src/context.rs
@@ -130,13 +130,11 @@ impl CoreContext {
                 return Ok(());
             }
         }
-        tracing::debug!("Start initializing flowy core");
         INIT_WORKSPACE.write().insert(token.to_owned(), true);
         let _ = self.workspace_controller.init()?;
         let _ = self.app_controller.init()?;
         let _ = self.view_controller.init()?;
         let _ = self.trash_controller.init()?;
-        tracing::debug!("Finish initializing core");
 
         Ok(())
     }
diff --git a/frontend/rust-lib/flowy-document/src/core/edit/editor.rs b/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
index 89672cfef6..aaa8f52d6a 100644
--- a/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
+++ b/frontend/rust-lib/flowy-document/src/core/edit/editor.rs
@@ -18,6 +18,7 @@ use tokio::sync::{mpsc, mpsc::UnboundedSender, oneshot};
 
 pub struct ClientDocumentEditor {
     pub doc_id: String,
+    #[allow(dead_code)]
     rev_manager: Arc<DocumentRevisionManager>,
     ws_manager: Arc<dyn DocumentWebSocketManager>,
     edit_queue: UnboundedSender<EditorCommand>,
diff --git a/frontend/rust-lib/flowy-document/src/core/edit/queue.rs b/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
index 6df45450fb..6873ff0766 100644
--- a/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
+++ b/frontend/rust-lib/flowy-document/src/core/edit/queue.rs
@@ -58,7 +58,7 @@ impl EditorCommandQueue {
             .await;
     }
 
-    #[tracing::instrument(level = "debug", skip(self), err)]
+    #[tracing::instrument(level = "trace", skip(self), err)]
     async fn handle_command(&self, command: EditorCommand) -> Result<(), FlowyError> {
         match command {
             EditorCommand::ComposeLocalDelta { delta, ret } => {
@@ -289,6 +289,7 @@ pub(crate) enum EditorCommand {
     ReadDoc {
         ret: Ret<String>,
     },
+    #[allow(dead_code)]
     ReadDocDelta {
         ret: Ret<RichTextDelta>,
     },
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/cache.rs b/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
index eeecc039d6..db3647ee73 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/cache.rs
@@ -109,7 +109,7 @@ impl DocumentRevisionCache {
     }
 
     #[tracing::instrument(level = "debug", skip(self, doc_id, revisions))]
-    pub async fn reset_document(&self, doc_id: &str, revisions: Vec<Revision>) -> FlowyResult<()> {
+    pub async fn reset_with_revisions(&self, doc_id: &str, revisions: Vec<Revision>) -> FlowyResult<()> {
         let revision_records = revisions
             .to_vec()
             .into_iter()
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/disk/sql_impl.rs b/frontend/rust-lib/flowy-document/src/core/revision/disk/sql_impl.rs
index 2976688419..189ec8ff2f 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/disk/sql_impl.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/disk/sql_impl.rs
@@ -120,7 +120,11 @@ impl RevisionTableSql {
             .filter(dsl::rev_id.eq(changeset.rev_id.as_ref()))
             .filter(dsl::doc_id.eq(changeset.doc_id));
         let _ = update(filter).set(dsl::state.eq(changeset.state)).execute(conn)?;
-        tracing::debug!("Save revision:{} state to {:?}", changeset.rev_id, changeset.state);
+        tracing::debug!(
+            "[[RevisionTable]] Save:{} state to {:?}",
+            changeset.rev_id,
+            changeset.state
+        );
         Ok(())
     }
 
@@ -170,7 +174,7 @@ impl RevisionTableSql {
         }
 
         let affected_row = sql.execute(conn)?;
-        tracing::debug!("Delete {} revision rows", affected_row);
+        tracing::trace!("[RevisionTable] Delete {} rows", affected_row);
         Ok(())
     }
 }
diff --git a/frontend/rust-lib/flowy-document/src/core/revision/manager.rs b/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
index bab04cd81c..798f717bd8 100644
--- a/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
+++ b/frontend/rust-lib/flowy-document/src/core/revision/manager.rs
@@ -60,7 +60,10 @@ impl DocumentRevisionManager {
     #[tracing::instrument(level = "debug", skip(self, revisions), err)]
     pub async fn reset_document(&self, revisions: RepeatedRevision) -> FlowyResult<()> {
         let rev_id = pair_rev_id_from_revisions(&revisions).1;
-        let _ = self.cache.reset_document(&self.doc_id, revisions.into_inner()).await?;
+        let _ = self
+            .cache
+            .reset_with_revisions(&self.doc_id, revisions.into_inner())
+            .await?;
         self.rev_id_counter.set(rev_id);
         Ok(())
     }
diff --git a/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs b/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
index ea4433c73a..f74015b509 100644
--- a/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
+++ b/frontend/rust-lib/flowy-document/src/core/web_socket/http_ws_impl.rs
@@ -181,7 +181,7 @@ impl DocumentWSStream {
             .await
             .map_err(internal_error)?;
 
-        tracing::debug!("[DocumentStream]: new message: {:?}", ty);
+        tracing::trace!("[DocumentStream]: new message: {:?}", ty);
         match ty {
             DocumentServerWSDataType::ServerPushRev => {
                 let _ = self.consumer.receive_push_revision(bytes).await?;
@@ -272,7 +272,7 @@ impl DocumentWSSink {
                 Ok(())
             },
             Some(data) => {
-                tracing::debug!("[DocumentSink]: send: {}:{}-{:?}", data.doc_id, data.id(), data.ty);
+                tracing::trace!("[DocumentSink]: send: {}:{}-{:?}", data.doc_id, data.id(), data.ty);
                 self.ws_sender.send(data)
                 // let _ = tokio::time::timeout(Duration::from_millis(2000),
             },
diff --git a/frontend/rust-lib/flowy-document/tests/document/document_test.rs b/frontend/rust-lib/flowy-document/tests/document/document_test.rs
index 31ec87af6d..8c8e17aff1 100644
--- a/frontend/rust-lib/flowy-document/tests/document/document_test.rs
+++ b/frontend/rust-lib/flowy-document/tests/document/document_test.rs
@@ -55,6 +55,18 @@ async fn document_sync_insert_in_chinese() {
     EditorTest::new().await.run_scripts(scripts).await;
 }
 
+#[tokio::test]
+async fn document_sync_insert_with_emoji() {
+    let s = "😁".to_owned();
+    let offset = count_utf16_code_units(&s);
+    let scripts = vec![
+        InsertText("😁", 0),
+        InsertText("☺️", offset),
+        AssertJson(r#"[{"insert":"😁☺️\n"}]"#),
+    ];
+    EditorTest::new().await.run_scripts(scripts).await;
+}
+
 #[tokio::test]
 async fn document_sync_delete_in_english() {
     let scripts = vec![
diff --git a/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs b/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
index a5c8fdfcb8..8fb58f6630 100644
--- a/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
+++ b/frontend/rust-lib/flowy-net/src/services/local_ws/local_server.rs
@@ -40,7 +40,7 @@ impl LocalDocumentServer {
         client_data: DocumentClientWSData,
         user_id: String,
     ) -> Result<(), CollaborateError> {
-        tracing::debug!(
+        tracing::trace!(
             "[LocalDocumentServer] receive: {}:{}-{:?} ",
             client_data.doc_id,
             client_data.id(),
@@ -72,7 +72,7 @@ struct LocalDocServerPersistence {
 }
 
 impl Debug for LocalDocServerPersistence {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { f.write_str("MockDocServerPersistence") }
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { f.write_str("LocalDocServerPersistence") }
 }
 
 impl std::default::Default for LocalDocServerPersistence {
@@ -89,10 +89,7 @@ impl DocumentPersistence for LocalDocServerPersistence {
         let doc_id = doc_id.to_owned();
         Box::pin(async move {
             match inner.get(&doc_id) {
-                None => {
-                    //
-                    Err(CollaborateError::record_not_found())
-                },
+                None => Err(CollaborateError::record_not_found()),
                 Some(val) => {
                     //
                     Ok(val.value().clone())
diff --git a/frontend/rust-lib/flowy-sdk/src/lib.rs b/frontend/rust-lib/flowy-sdk/src/lib.rs
index 57efe1ec24..4bae25397f 100644
--- a/frontend/rust-lib/flowy-sdk/src/lib.rs
+++ b/frontend/rust-lib/flowy-sdk/src/lib.rs
@@ -53,19 +53,19 @@ impl FlowySDKConfig {
         FlowySDKConfig {
             name: name.to_owned(),
             root: root.to_owned(),
-            log_filter: crate_log_filter(None),
+            log_filter: crate_log_filter("info".to_owned()),
             server_config,
         }
     }
 
     pub fn log_filter(mut self, filter: &str) -> Self {
-        self.log_filter = crate_log_filter(Some(filter.to_owned()));
+        self.log_filter = crate_log_filter(filter.to_owned());
         self
     }
 }
 
-fn crate_log_filter(level: Option<String>) -> String {
-    let level = level.unwrap_or_else(|| std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_owned()));
+fn crate_log_filter(level: String) -> String {
+    let level = std::env::var("RUST_LOG").unwrap_or(level);
     let mut filters = vec![];
     filters.push(format!("flowy_sdk={}", level));
     filters.push(format!("flowy_core={}", level));
@@ -73,6 +73,8 @@ fn crate_log_filter(level: Option<String>) -> String {
     filters.push(format!("flowy_document={}", level));
     filters.push(format!("flowy_collaboration={}", level));
     filters.push(format!("flowy_net={}", level));
+    filters.push(format!("dart_ffi={}", "info"));
+    filters.push(format!("dart_database={}", "info"));
     filters.push(format!("dart_notify={}", level));
     filters.push(format!("lib_ot={}", level));
     filters.push(format!("lib_ws={}", level));
diff --git a/frontend/rust-lib/flowy-test/src/lib.rs b/frontend/rust-lib/flowy-test/src/lib.rs
index 844457fe9f..2ba8a20828 100644
--- a/frontend/rust-lib/flowy-test/src/lib.rs
+++ b/frontend/rust-lib/flowy-test/src/lib.rs
@@ -34,7 +34,7 @@ impl std::default::Default for FlowySDKTest {
 
 impl FlowySDKTest {
     pub fn new(server_config: ClientServerConfiguration) -> Self {
-        let config = FlowySDKConfig::new(&root_dir(), server_config, &uuid_string()).log_filter("debug");
+        let config = FlowySDKConfig::new(&root_dir(), server_config, &uuid_string()).log_filter("trace");
         let sdk = FlowySDK::new(config);
         std::mem::forget(sdk.dispatcher());
         Self { inner: sdk }
diff --git a/shared-lib/flowy-collaboration/src/document/document.rs b/shared-lib/flowy-collaboration/src/document/document.rs
index ae4edbaf86..2cb5c196fb 100644
--- a/shared-lib/flowy-collaboration/src/document/document.rs
+++ b/shared-lib/flowy-collaboration/src/document/document.rs
@@ -69,6 +69,7 @@ impl Document {
     pub fn set_notify(&mut self, notify: mpsc::UnboundedSender<()>) { self.notify = Some(notify); }
 
     pub fn set_delta(&mut self, data: RichTextDelta) {
+        tracing::trace!("document: {}", data.to_json());
         self.delta = data;
 
         match &self.notify {
@@ -80,7 +81,6 @@ impl Document {
     }
 
     pub fn compose_delta(&mut self, delta: RichTextDelta) -> Result<(), CollaborateError> {
-        tracing::trace!("👉 receive change: {}", delta);
         tracing::trace!("{} compose {}", &self.delta.to_json(), delta.to_json());
         let composed_delta = self.delta.compose(&delta)?;
         let mut undo_delta = delta.invert(&self.delta);
@@ -97,13 +97,11 @@ impl Document {
             self.last_edit_time = now;
         }
 
-        tracing::trace!("👉 receive change undo: {}", undo_delta);
         if !undo_delta.is_empty() {
+            tracing::trace!("add history delta: {}", undo_delta);
             self.history.record(undo_delta);
         }
 
-        tracing::trace!("compose result: {}", composed_delta.to_json());
-
         self.set_delta(composed_delta);
         Ok(())
     }
@@ -133,7 +131,7 @@ impl Document {
         attribute: RichTextAttribute,
     ) -> Result<RichTextDelta, CollaborateError> {
         let _ = validate_interval(&self.delta, &interval)?;
-        tracing::trace!("format with {} at {}", attribute, interval);
+        tracing::trace!("format {} with {}", interval, attribute);
         let format_delta = self.view.format(&self.delta, attribute, interval).unwrap();
         self.compose_delta(format_delta.clone())?;
         Ok(format_delta)
@@ -192,7 +190,6 @@ impl Document {
         // c = a.compose(b)
         // d = b.invert(a)
         // a = c.compose(d)
-        tracing::trace!("Invert {}", delta);
         let new_delta = self.delta.compose(delta)?;
         let inverted_delta = delta.invert(&self.delta);
         Ok((new_delta, inverted_delta))
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_block_format.rs b/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_block_format.rs
index ab78f46161..42f64c1b8a 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_block_format.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_block_format.rs
@@ -10,7 +10,7 @@ use crate::{
 
 pub struct ResolveBlockFormat {}
 impl FormatExt for ResolveBlockFormat {
-    fn ext_name(&self) -> &str { std::any::type_name::<ResolveBlockFormat>() }
+    fn ext_name(&self) -> &str { "ResolveBlockFormat" }
 
     fn apply(&self, delta: &RichTextDelta, interval: Interval, attribute: &RichTextAttribute) -> Option<RichTextDelta> {
         if attribute.scope != AttributeScope::Block {
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_inline_format.rs b/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_inline_format.rs
index f82971f44d..036617ff85 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_inline_format.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/format/resolve_inline_format.rs
@@ -10,7 +10,7 @@ use crate::{
 
 pub struct ResolveInlineFormat {}
 impl FormatExt for ResolveInlineFormat {
-    fn ext_name(&self) -> &str { std::any::type_name::<ResolveInlineFormat>() }
+    fn ext_name(&self) -> &str { "ResolveInlineFormat" }
 
     fn apply(&self, delta: &RichTextDelta, interval: Interval, attribute: &RichTextAttribute) -> Option<RichTextDelta> {
         if attribute.scope != AttributeScope::Inline {
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_exit_block.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_exit_block.rs
index c8824cb846..6516203a9d 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_exit_block.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_exit_block.rs
@@ -7,7 +7,7 @@ use lib_ot::{
 pub struct AutoExitBlock {}
 
 impl InsertExt for AutoExitBlock {
-    fn ext_name(&self) -> &str { std::any::type_name::<AutoExitBlock>() }
+    fn ext_name(&self) -> &str { "AutoExitBlock" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         // Auto exit block will be triggered by enter two new lines
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_format.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_format.rs
index 7104c69c00..de58e6d5d7 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_format.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/auto_format.rs
@@ -8,7 +8,7 @@ use url::Url;
 
 pub struct AutoFormatExt {}
 impl InsertExt for AutoFormatExt {
-    fn ext_name(&self) -> &str { std::any::type_name::<AutoFormatExt>() }
+    fn ext_name(&self) -> &str { "AutoFormatExt" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         // enter whitespace to trigger auto format
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/default_insert.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/default_insert.rs
index 074f3fa63d..5dbeab66cf 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/default_insert.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/default_insert.rs
@@ -6,7 +6,7 @@ use lib_ot::{
 
 pub struct DefaultInsertAttribute {}
 impl InsertExt for DefaultInsertAttribute {
-    fn ext_name(&self) -> &str { std::any::type_name::<DefaultInsertAttribute>() }
+    fn ext_name(&self) -> &str { "DefaultInsertAttribute" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         let iter = DeltaIter::new(delta);
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_block_format.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_block_format.rs
index 128223a558..5df18aef1f 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_block_format.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_block_format.rs
@@ -13,7 +13,7 @@ use lib_ot::{
 
 pub struct PreserveBlockFormatOnInsert {}
 impl InsertExt for PreserveBlockFormatOnInsert {
-    fn ext_name(&self) -> &str { std::any::type_name::<PreserveBlockFormatOnInsert>() }
+    fn ext_name(&self) -> &str { "PreserveBlockFormatOnInsert" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         if !is_newline(text) {
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_inline_format.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_inline_format.rs
index a593ae1c6e..672ab6af2d 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_inline_format.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/preserve_inline_format.rs
@@ -9,7 +9,7 @@ use lib_ot::{
 
 pub struct PreserveInlineFormat {}
 impl InsertExt for PreserveInlineFormat {
-    fn ext_name(&self) -> &str { std::any::type_name::<PreserveInlineFormat>() }
+    fn ext_name(&self) -> &str { "PreserveInlineFormat" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         if contain_newline(text) {
@@ -53,7 +53,7 @@ impl InsertExt for PreserveInlineFormat {
 
 pub struct PreserveLineFormatOnSplit {}
 impl InsertExt for PreserveLineFormatOnSplit {
-    fn ext_name(&self) -> &str { std::any::type_name::<PreserveLineFormatOnSplit>() }
+    fn ext_name(&self) -> &str { "PreserveLineFormatOnSplit" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         if !is_newline(text) {
diff --git a/shared-lib/flowy-collaboration/src/document/extensions/insert/reset_format_on_new_line.rs b/shared-lib/flowy-collaboration/src/document/extensions/insert/reset_format_on_new_line.rs
index 014d74ad81..c920d6f22b 100644
--- a/shared-lib/flowy-collaboration/src/document/extensions/insert/reset_format_on_new_line.rs
+++ b/shared-lib/flowy-collaboration/src/document/extensions/insert/reset_format_on_new_line.rs
@@ -6,7 +6,7 @@ use lib_ot::{
 
 pub struct ResetLineFormatOnNewLine {}
 impl InsertExt for ResetLineFormatOnNewLine {
-    fn ext_name(&self) -> &str { std::any::type_name::<ResetLineFormatOnNewLine>() }
+    fn ext_name(&self) -> &str { "ResetLineFormatOnNewLine" }
 
     fn apply(&self, delta: &RichTextDelta, replace_len: usize, text: &str, index: usize) -> Option<RichTextDelta> {
         if !is_newline(text) {
diff --git a/shared-lib/flowy-collaboration/src/document/view.rs b/shared-lib/flowy-collaboration/src/document/view.rs
index 4fb992cbcb..21978a84e2 100644
--- a/shared-lib/flowy-collaboration/src/document/view.rs
+++ b/shared-lib/flowy-collaboration/src/document/view.rs
@@ -32,7 +32,7 @@ impl View {
         for ext in &self.insert_exts {
             if let Some(mut delta) = ext.apply(delta, interval.size(), text, interval.start) {
                 trim(&mut delta);
-                tracing::debug!("[{}]: process delta: {}", ext.ext_name(), delta);
+                tracing::debug!("[{} extension]: process: {}", ext.ext_name(), delta);
                 new_delta = Some(delta);
                 break;
             }
diff --git a/shared-lib/flowy-collaboration/src/sync/server.rs b/shared-lib/flowy-collaboration/src/sync/server.rs
index bcd6caa3ea..ad30b51070 100644
--- a/shared-lib/flowy-collaboration/src/sync/server.rs
+++ b/shared-lib/flowy-collaboration/src/sync/server.rs
@@ -89,7 +89,7 @@ impl ServerDocumentManager {
         let doc_id = client_data.doc_id.clone();
         match self.get_document_handler(&doc_id).await {
             None => {
-                tracing::warn!("Document:{} doesn't exist, ignore pinging", doc_id);
+                tracing::trace!("Document:{} doesn't exist, ignore pinging", doc_id);
                 Ok(())
             },
             Some(handler) => {
diff --git a/shared-lib/flowy-collaboration/src/sync/synchronizer.rs b/shared-lib/flowy-collaboration/src/sync/synchronizer.rs
index 48f7e8fb63..ff3c884f4b 100644
--- a/shared-lib/flowy-collaboration/src/sync/synchronizer.rs
+++ b/shared-lib/flowy-collaboration/src/sync/synchronizer.rs
@@ -111,7 +111,7 @@ impl RevisionSynchronizer {
         Ok(())
     }
 
-    #[tracing::instrument(level = "debug", skip(self, user, persistence), fields(server_rev_id), err)]
+    #[tracing::instrument(level = "trace", skip(self, user, persistence), fields(server_rev_id), err)]
     pub async fn pong(
         &self,
         user: Arc<dyn RevisionUser>,
@@ -125,7 +125,7 @@ impl RevisionSynchronizer {
             Ordering::Less => {
                 tracing::error!("Client should not send ping and the server should pull the revisions from the client")
             },
-            Ordering::Equal => tracing::debug!("{} is up to date.", doc_id),
+            Ordering::Equal => tracing::trace!("{} is up to date.", doc_id),
             Ordering::Greater => {
                 // The client document is outdated. Transform the client revision delta and then
                 // send the prime delta to the client. Client should compose the this prime
diff --git a/shared-lib/lib-ot/src/core/delta/delta.rs b/shared-lib/lib-ot/src/core/delta/delta.rs
index 45f700afd6..526b3f5c9d 100644
--- a/shared-lib/lib-ot/src/core/delta/delta.rs
+++ b/shared-lib/lib-ot/src/core/delta/delta.rs
@@ -394,9 +394,7 @@ where
         if other.is_empty() {
             return inverted;
         }
-        tracing::trace!("🌜Calculate invert delta");
-        tracing::trace!("current: {}", self);
-        tracing::trace!("other: {}", other);
+
         let mut index = 0;
         for op in &self.ops {
             let len: usize = op.len() as usize;
@@ -409,20 +407,19 @@ where
                     match op.has_attribute() {
                         true => invert_from_other(&mut inverted, other, op, index, index + len),
                         false => {
-                            tracing::trace!("invert retain: {} by retain {} {}", op, len, op.get_attributes());
+                            // tracing::trace!("invert retain: {} by retain {} {}", op, len,
+                            // op.get_attributes());
                             inverted.retain(len as usize, op.get_attributes())
                         },
                     }
                     index += len;
                 },
                 Operation::Insert(_) => {
-                    tracing::trace!("invert insert: {} by delete {}", op, len);
+                    // tracing::trace!("invert insert: {} by delete {}", op, len);
                     inverted.delete(len as usize);
                 },
             }
         }
-
-        tracing::trace!("🌛invert result: {}", inverted);
         inverted
     }
 }