diff --git a/CMakeLists.txt b/CMakeLists.txt
index bd51a9cd..ffe4105a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -580,6 +580,7 @@ elseif((WITH_DATA_STORE STREQUAL "ELOQDSS_ROCKSDB_CLOUD_S3") OR
         store_handler/eloq_data_store_service/rocksdb_config.cpp
         store_handler/eloq_data_store_service/purger_event_listener.cpp
         store_handler/eloq_data_store_service/purger_sliding_window.cpp
+        store_handler/eloq_data_store_service/s3_file_downloader.cpp
     )
 elseif(WITH_DATA_STORE STREQUAL "ELOQDSS_ROCKSDB")
     SET(RESELOQ_RESOURCES ${RESELOQ_RESOURCES}
diff --git a/src/redis_service.cpp b/src/redis_service.cpp
index 888127ef..4cbb0f20 100644
--- a/src/redis_service.cpp
+++ b/src/redis_service.cpp
@@ -365,6 +365,9 @@ DEFINE_string(eloq_dss_peer_node,
 DEFINE_string(eloq_dss_branch_name,
               "development",
               "Branch name of EloqDataStore");
+DEFINE_uint32(dss_file_cache_sync_interval_sec,
+              30,
+              "File cache sync interval in seconds for standby warm-up");
 #endif
 
 namespace EloqKV
@@ -1037,6 +1040,14 @@ bool RedisServiceImpl::Init(brpc::Server &brpc_server)
                 : config_reader.GetString(
                       "store", "eloq_dss_peer_node", FLAGS_eloq_dss_peer_node);
 
+        uint32_t dss_file_cache_sync_interval_sec =
+            !CheckCommandLineFlagIsDefault("dss_file_cache_sync_interval_sec")
+                ? FLAGS_dss_file_cache_sync_interval_sec
+                : config_reader.GetInteger(
+                      "store",
+                      "dss_file_cache_sync_interval_sec",
+                      FLAGS_dss_file_cache_sync_interval_sec);
+
         std::string eloq_dss_data_path = eloq_data_path + "/eloq_dss";
         if (!std::filesystem::exists(eloq_dss_data_path))
         {
@@ -1086,6 +1097,9 @@ bool RedisServiceImpl::Init(brpc::Server &brpc_server)
                 ds_config);
         }
 
+        // Set file cache sync interval
+        ds_config.SetFileCacheSyncIntervalSec(dss_file_cache_sync_interval_sec);
+
 #if defined(DATA_STORE_TYPE_ELOQDSS_ROCKSDB_CLOUD_S3) ||                       \
     defined(DATA_STORE_TYPE_ELOQDSS_ROCKSDB_CLOUD_GCS)
         EloqDS::RocksDBConfig rocksdb_config(config_reader, eloq_dss_data_path);
diff --git a/store_handler b/store_handler
index 1c00129c..87ee52bf 160000
--- a/store_handler
+++ b/store_handler
@@ -1 +1 @@
-Subproject commit 1c00129c7cc8e83fb9b2237f4289fd76dd2c2fd5
+Subproject commit 87ee52bf0672fee7c8f4b190c93b99cdfcb1bb37