diff --git a/node/miner/src/loader.rs b/node/miner/src/loader.rs
index e8952d4..afb2043 100644
--- a/node/miner/src/loader.rs
+++ b/node/miner/src/loader.rs
@@ -1,7 +1,7 @@
 use async_trait::async_trait;
 use std::sync::Arc;
 use storage::log_store::{MineLoadChunk, Store};
-use tokio::sync::RwLock;
+
 
 #[async_trait]
 pub trait PoraLoader: Send + Sync {
diff --git a/node/miner/src/miner_id.rs b/node/miner/src/miner_id.rs
index 20a1379..59d265d 100644
--- a/node/miner/src/miner_id.rs
+++ b/node/miner/src/miner_id.rs
@@ -7,7 +7,7 @@ use ethers::contract::EthEvent;
 use std::sync::Arc;
 use storage::log_store::{config::ConfigurableExt, Store};
 use storage::H256;
-use tokio::sync::RwLock;
+
 
 const MINER_ID: &str = "mine.miner_id";
 
diff --git a/node/miner/src/sealer.rs b/node/miner/src/sealer.rs
index 0500f3c..2ffc43c 100644
--- a/node/miner/src/sealer.rs
+++ b/node/miner/src/sealer.rs
@@ -2,7 +2,6 @@ use std::{collections::BTreeMap, sync::Arc};
 
 use ethereum_types::H256;
 use tokio::{
-    sync::RwLock,
     time::{sleep, Duration, Instant},
 };
 
diff --git a/node/miner/src/service.rs b/node/miner/src/service.rs
index b96a143..7d34101 100644
--- a/node/miner/src/service.rs
+++ b/node/miner/src/service.rs
@@ -7,7 +7,7 @@ use std::sync::Arc;
 use storage::config::ShardConfig;
 use storage::log_store::Store;
 use tokio::sync::mpsc;
-use tokio::sync::{broadcast, RwLock};
+use tokio::sync::{broadcast};
 
 #[derive(Clone, Debug)]
 pub enum MinerMessage {
diff --git a/node/miner/src/submitter.rs b/node/miner/src/submitter.rs
index 753fb8f..bf7b79e 100644
--- a/node/miner/src/submitter.rs
+++ b/node/miner/src/submitter.rs
@@ -8,7 +8,7 @@ use shared_types::FlowRangeProof;
 use std::sync::Arc;
 use storage::log_store::Store;
 use task_executor::TaskExecutor;
-use tokio::sync::{mpsc, RwLock};
+use tokio::sync::{mpsc};
 
 use crate::config::{MineServiceMiddleware, MinerConfig};
 use crate::pora::AnswerWithoutProof;
diff --git a/node/pruner/src/lib.rs b/node/pruner/src/lib.rs
index 914443a..f460288 100644
--- a/node/pruner/src/lib.rs
+++ b/node/pruner/src/lib.rs
@@ -8,7 +8,7 @@ use storage::config::{ShardConfig, SHARD_CONFIG_KEY};
 use storage::log_store::config::ConfigurableExt;
 use storage::log_store::Store;
 use task_executor::TaskExecutor;
-use tokio::sync::{broadcast, mpsc, RwLock};
+use tokio::sync::{broadcast, mpsc};
 use tracing::debug;
 
 // Start pruning when the db directory size exceeds 0.9 * limit.
diff --git a/node/src/client/builder.rs b/node/src/client/builder.rs
index c50df97..70563d7 100644
--- a/node/src/client/builder.rs
+++ b/node/src/client/builder.rs
@@ -15,7 +15,7 @@ use storage::log_store::log_manager::LogConfig;
 use storage::log_store::Store;
 use storage::{LogManager, StorageConfig};
 use sync::{SyncSender, SyncService};
-use tokio::sync::{broadcast, mpsc, RwLock};
+use tokio::sync::{broadcast, mpsc};
 
 macro_rules! require {
     ($component:expr, $self:ident, $e:ident) => {
diff --git a/node/storage-async/src/lib.rs b/node/storage-async/src/lib.rs
index 81eab35..a6884d5 100644
--- a/node/storage-async/src/lib.rs
+++ b/node/storage-async/src/lib.rs
@@ -6,7 +6,7 @@ use shared_types::{Chunk, ChunkArray, ChunkArrayWithProof, DataRoot, FlowProof,
 use std::sync::Arc;
 use storage::{error, error::Result, log_store::Store as LogStore, H256};
 use task_executor::TaskExecutor;
-use tokio::sync::{oneshot, RwLock};
+use tokio::sync::{oneshot};
 
 pub use storage::config::ShardConfig;
 
diff --git a/node/storage/src/log_store/tests.rs b/node/storage/src/log_store/tests.rs
index 6928540..741b172 100644
--- a/node/storage/src/log_store/tests.rs
+++ b/node/storage/src/log_store/tests.rs
@@ -12,7 +12,7 @@ use std::cmp;
 #[test]
 fn test_put_get() {
     let config = LogConfig::default();
-    let mut store = LogManager::memorydb(config.clone()).unwrap();
+    let store = LogManager::memorydb(config.clone()).unwrap();
     let chunk_count = config.flow.batch_size + config.flow.batch_size / 2 - 1;
     // Aligned with size.
     let start_offset = 1024;
diff --git a/node/sync/src/auto_sync/sync_store.rs b/node/sync/src/auto_sync/sync_store.rs
index 4797cca..ff885e4 100644
--- a/node/sync/src/auto_sync/sync_store.rs
+++ b/node/sync/src/auto_sync/sync_store.rs
@@ -1,6 +1,6 @@
 use super::tx_store::TxStore;
 use anyhow::Result;
-use std::ops::Deref;
+
 use storage::log_store::config::{ConfigTx, ConfigurableExt};
 use storage_async::Store;
 
@@ -57,12 +57,12 @@ impl SyncStore {
         let store = self.store.get_store();
 
         // already in ready queue
-        if self.ready_txs.has(store.deref(), tx_seq)? {
+        if self.ready_txs.has(store, tx_seq)? {
             return Ok(false);
         }
 
         // always add in pending queue
-        self.pending_txs.add(store.deref(), None, tx_seq)
+        self.pending_txs.add(store, None, tx_seq)
     }
 
     pub async fn upgrade_tx_to_ready(&self, tx_seq: u64) -> Result<bool> {
@@ -73,13 +73,13 @@ impl SyncStore {
         // not in pending queue
         if !self
             .pending_txs
-            .remove(store.deref(), Some(&mut tx), tx_seq)?
+            .remove(store, Some(&mut tx), tx_seq)?
         {
             return Ok(false);
         }
 
         // move from pending to ready queue
-        let added = self.ready_txs.add(store.deref(), Some(&mut tx), tx_seq)?;
+        let added = self.ready_txs.add(store, Some(&mut tx), tx_seq)?;
 
         store.exec_configs(tx)?;
 
@@ -94,13 +94,13 @@ impl SyncStore {
         // not in ready queue
         if !self
             .ready_txs
-            .remove(store.deref(), Some(&mut tx), tx_seq)?
+            .remove(store, Some(&mut tx), tx_seq)?
         {
             return Ok(false);
         }
 
         // move from ready to pending queue
-        let added = self.pending_txs.add(store.deref(), Some(&mut tx), tx_seq)?;
+        let added = self.pending_txs.add(store, Some(&mut tx), tx_seq)?;
 
         store.exec_configs(tx)?;
 
@@ -111,24 +111,24 @@ impl SyncStore {
         let store = self.store.get_store();
 
         // try to find a tx in ready queue with high priority
-        if let Some(val) = self.ready_txs.random(store.deref())? {
+        if let Some(val) = self.ready_txs.random(store)? {
             return Ok(Some(val));
         }
 
         // otherwise, find tx in pending queue
-        self.pending_txs.random(store.deref())
+        self.pending_txs.random(store)
     }
 
     pub async fn remove_tx(&self, tx_seq: u64) -> Result<bool> {
         let store = self.store.get_store();
 
         // removed in ready queue
-        if self.ready_txs.remove(store.deref(), None, tx_seq)? {
+        if self.ready_txs.remove(store, None, tx_seq)? {
             return Ok(true);
         }
 
         // otherwise, try to remove in pending queue
-        self.pending_txs.remove(store.deref(), None, tx_seq)
+        self.pending_txs.remove(store, None, tx_seq)
     }
 }
 
diff --git a/node/sync/src/controllers/serial.rs b/node/sync/src/controllers/serial.rs
index b003bee..b6ef02c 100644
--- a/node/sync/src/controllers/serial.rs
+++ b/node/sync/src/controllers/serial.rs
@@ -651,7 +651,7 @@ mod tests {
     use storage::H256;
     use task_executor::{test_utils::TestRuntime, TaskExecutor};
     use tokio::sync::mpsc::{self, UnboundedReceiver};
-    use tokio::sync::RwLock;
+    
 
     #[test]
     fn test_status() {
@@ -1423,8 +1423,6 @@ mod tests {
         );
 
         let chunks = peer_store
-            .read()
-            .await
             .get_chunks_with_proof_by_tx_and_index_range(tx_seq, 0, chunk_count)
             .unwrap()
             .unwrap();
@@ -1547,7 +1545,7 @@ mod tests {
         let num_chunks = 123;
 
         let config = LogConfig::default();
-        let store = Arc::new(RwLock::new(LogManager::memorydb(config).unwrap()));
+        let store = Arc::new(LogManager::memorydb(config).unwrap());
 
         create_controller(task_executor, peer_id, store, tx_id, num_chunks)
     }
diff --git a/node/sync/src/service.rs b/node/sync/src/service.rs
index b6bd198..1e717bc 100644
--- a/node/sync/src/service.rs
+++ b/node/sync/src/service.rs
@@ -23,7 +23,7 @@ use storage::config::ShardConfig;
 use storage::error::Result as StorageResult;
 use storage::log_store::Store as LogStore;
 use storage_async::Store;
-use tokio::sync::{broadcast, mpsc, RwLock};
+use tokio::sync::{broadcast, mpsc};
 
 const HEARTBEAT_INTERVAL_SEC: u64 = 5;
 
@@ -1158,7 +1158,7 @@ mod tests {
 
         let config = LogConfig::default();
 
-        let store = Arc::new(RwLock::new(LogManager::memorydb(config.clone()).unwrap()));
+        let store = Arc::new(LogManager::memorydb(config.clone()).unwrap());
 
         let init_peer_id = identity::Keypair::generate_ed25519().public().to_peer_id();
         let file_location_cache: Arc<FileLocationCache> =
@@ -1364,7 +1364,7 @@ mod tests {
 
         wait_for_tx_finalized(runtime.store.clone(), tx_seq).await;
 
-        assert!(!runtime.store.read().await.check_tx_completed(0).unwrap());
+        assert!(!runtime.store.check_tx_completed(0).unwrap());
 
         // first file
         let tx_seq = 0u64;
diff --git a/node/sync/src/test_util.rs b/node/sync/src/test_util.rs
index ce0fdaa..c1154c4 100644
--- a/node/sync/src/test_util.rs
+++ b/node/sync/src/test_util.rs
@@ -8,7 +8,7 @@ use storage::{
     },
     LogManager,
 };
-use tokio::sync::RwLock;
+
 
 /// Creates stores for local node and peers with initialized transaction of specified chunk count.
 /// The first store is for local node, and data not stored. The second store is for peers, and all
@@ -101,7 +101,7 @@ pub mod tests {
     };
     use storage_async::Store;
     use task_executor::test_utils::TestRuntime;
-    use tokio::sync::RwLock;
+    
 
     pub struct TestStoreRuntime {
         pub runtime: TestRuntime,