diff --git a/cpp/conf/server_config.template b/cpp/conf/server_config.template
index a96d2d81cfc25316a9a7d8fcbaf1809a65e43073..6364698100e43de7dda50b3a5da74565e1656e02 100644
--- a/cpp/conf/server_config.template
+++ b/cpp/conf/server_config.template
@@ -5,13 +5,13 @@ server_config:
   time_zone: UTC+8
 
 db_config:
-  db_path: @MILVUS_DB_PATH@     # milvus database path
-  db_slave_path:                # secondary database path, split by semicolon
+  path: @MILVUS_DB_PATH@        # milvus database path
+  slave_path:                   # secondary database path, split by semicolon
 
   # URI format: dialect://username:password@host:port/database
   # All parts except dialect are optional, but you MUST include the delimiters
   # Currently dialect supports mysql or sqlite
-  db_backend_url: sqlite://:@:/
+  backend_url: sqlite://:@:/
 
   archive_disk_threshold: 0     # GB, file will be archived when disk usage exceed, 0 for no limit
   archive_days_threshold: 0     # DAYS, older files will be archived, 0 for no limit
@@ -27,7 +27,7 @@ metric_config:
 cache_config:
   cpu_mem_capacity: 16          # GB, CPU memory size used for cache
   cpu_mem_threshold: 0.85       # percent of data kept when cache cleanup triggered
-  insert_immediately: false     # whether load data into cache when insert
+  cache_insert_data: false      # whether load data into cache when insert
 
 engine_config:
   blas_threshold: 20
diff --git a/cpp/src/cache/CpuCacheMgr.cpp b/cpp/src/cache/CpuCacheMgr.cpp
index ee30494192685429a1d3ca1c297cca59a691d3ce..7141394fa1f5b459f5be494e4253ad21c4ebb8bf 100644
--- a/cpp/src/cache/CpuCacheMgr.cpp
+++ b/cpp/src/cache/CpuCacheMgr.cpp
@@ -29,19 +29,16 @@ namespace {
 }
 
 CpuCacheMgr::CpuCacheMgr() {
-    server::ConfigNode& config = server::ServerConfig::GetInstance().GetConfig(server::CONFIG_CACHE);
-    int64_t cap =
-        config.GetInt64Value(server::CONFIG_CACHE_CPU_MEM_CAPACITY, std::stoi(server::CONFIG_CACHE_CPU_MEM_CAPACITY_DEFAULT));
-    cap *= unit;
+    server::ServerConfig& config = server::ServerConfig::GetInstance();
+    int64_t cap = config.GetCacheConfigCpuMemCapacity() * unit;
     cache_ = std::make_shared<Cache<DataObjPtr>>(cap, 1UL<<32);
 
-    double free_percent =
-        config.GetDoubleValue(server::CONFIG_CACHE_CPU_MEM_THRESHOLD, std::stof(server::CONFIG_CACHE_CPU_MEM_THRESHOLD_DEFAULT));
-    if(free_percent > 0.0 && free_percent <= 1.0) {
-        cache_->set_freemem_percent(free_percent);
+    float cpu_mem_threshold = config.GetCacheConfigCpuMemThreshold();
+    if (cpu_mem_threshold > 0.0 && cpu_mem_threshold <= 1.0) {
+        cache_->set_freemem_percent(cpu_mem_threshold);
     } else {
-        SERVER_LOG_ERROR << "Invalid cache_free_percent: " << free_percent <<
-         ", defaultly set to " << cache_->freemem_percent();
+        SERVER_LOG_ERROR << "Invalid cpu_mem_threshold: " << cpu_mem_threshold
+                         << ", by default set to " << cache_->freemem_percent();
     }
 }
 
diff --git a/cpp/src/cache/GpuCacheMgr.cpp b/cpp/src/cache/GpuCacheMgr.cpp
index 58c7db3fd636c0fd83a69eceb556157234238828..ba5665f5f2b43e6fce22c28165eb4630f2a5dbad 100644
--- a/cpp/src/cache/GpuCacheMgr.cpp
+++ b/cpp/src/cache/GpuCacheMgr.cpp
@@ -33,20 +33,17 @@ namespace {
 }
 
 GpuCacheMgr::GpuCacheMgr() {
-    server::ConfigNode& config = server::ServerConfig::GetInstance().GetConfig(server::CONFIG_CACHE);
+    server::ServerConfig& config = server::ServerConfig::GetInstance();
 
-    int64_t cap =
-        config.GetInt64Value(server::CONFIG_CACHE_GPU_MEM_CAPACITY, std::stoi(server::CONFIG_CACHE_GPU_MEM_CAPACITY_DEFAULT));
-    cap *= G_BYTE;
+    int32_t cap = config.GetCacheConfigGpuMemCapacity() * G_BYTE;
     cache_ = std::make_shared<Cache<DataObjPtr>>(cap, 1UL<<32);
 
-    double free_percent =
-        config.GetDoubleValue(server::CONFIG_CACHE_GPU_MEM_THRESHOLD, std::stof(server::CONFIG_CACHE_GPU_MEM_THRESHOLD_DEFAULT));
-    if (free_percent > 0.0 && free_percent <= 1.0) {
-        cache_->set_freemem_percent(free_percent);
+    float gpu_mem_threshold = config.GetCacheConfigGpuMemThreshold();
+    if (gpu_mem_threshold > 0.0 && gpu_mem_threshold <= 1.0) {
+        cache_->set_freemem_percent(gpu_mem_threshold);
     } else {
-        SERVER_LOG_ERROR << "Invalid gpu_cache_free_percent: " << free_percent <<
-                         ", defaultly set to " << cache_->freemem_percent();
+        SERVER_LOG_ERROR << "Invalid gpu_mem_threshold: " << gpu_mem_threshold
+                         << ", by default set to " << cache_->freemem_percent();
     }
 }
 
diff --git a/cpp/src/db/engine/ExecutionEngineImpl.cpp b/cpp/src/db/engine/ExecutionEngineImpl.cpp
index 65483690d6a175c26014aa1e0552d95fe7e11f29..960f3baa89fee523673deb85339eb0a1f49ff352 100644
--- a/cpp/src/db/engine/ExecutionEngineImpl.cpp
+++ b/cpp/src/db/engine/ExecutionEngineImpl.cpp
@@ -335,8 +335,7 @@ Status ExecutionEngineImpl::GpuCache(uint64_t gpu_id) {
 Status ExecutionEngineImpl::Init() {
     using namespace zilliz::milvus::server;
     ServerConfig &config = ServerConfig::GetInstance();
-    ConfigNode server_config = config.GetConfig(CONFIG_DB);
-    gpu_num_ = server_config.GetInt32Value(CONFIG_DB_BUILD_INDEX_GPU, std::stoi(CONFIG_DB_BUILD_INDEX_GPU_DEFAULT));
+    gpu_num_ = config.GetDBConfigBuildIndexGPU();
 
     return Status::OK();
 }
diff --git a/cpp/src/metrics/Metrics.cpp b/cpp/src/metrics/Metrics.cpp
index ba51d7fd94c283eece16fe792152e045ce6464b6..59eaea63556030d81289acfd8fa4204f95ff5fc4 100644
--- a/cpp/src/metrics/Metrics.cpp
+++ b/cpp/src/metrics/Metrics.cpp
@@ -16,6 +16,7 @@
 // under the License.
 
 #include "Metrics.h"
+#include "server/ServerConfig.h"
 #include "PrometheusMetrics.h"
 
 
@@ -31,9 +32,8 @@ Metrics::GetInstance() {
 
 MetricsBase &
 Metrics::CreateMetricsCollector() {
-    ConfigNode &config = ServerConfig::GetInstance().GetConfig(CONFIG_METRIC);
-    std::string collector_type_str =
-        config.GetValue(CONFIG_METRIC_COLLECTOR, CONFIG_METRIC_COLLECTOR_DEFAULT);
+    ServerConfig &config = ServerConfig::GetInstance();
+    std::string collector_type_str = config.GetMetricConfigCollector();
 
     if (collector_type_str == "prometheus") {
         return PrometheusMetrics::GetInstance();
diff --git a/cpp/src/metrics/PrometheusMetrics.cpp b/cpp/src/metrics/PrometheusMetrics.cpp
index cc8aca204fb33af181b64a8431d1b56ad0044a68..b07e91ea32daa87b0161d203d1efb1688edd1c50 100644
--- a/cpp/src/metrics/PrometheusMetrics.cpp
+++ b/cpp/src/metrics/PrometheusMetrics.cpp
@@ -29,15 +29,12 @@ namespace server {
 ErrorCode
 PrometheusMetrics::Init() {
     try {
-        ConfigNode &metric_config = ServerConfig::GetInstance().GetConfig(CONFIG_METRIC);
-        startup_ =
-            metric_config.GetBoolValue(CONFIG_METRIC_AUTO_BOOTUP, std::stoi(CONFIG_METRIC_AUTO_BOOTUP_DEFAULT));
+        ServerConfig &config = ServerConfig::GetInstance();
+        startup_ = config.GetMetricConfigAutoBootup();
         if (!startup_) return SERVER_SUCCESS;
 
         // Following should be read from config file.
-        ConfigNode &prometheus_config = metric_config.GetChild(CONFIG_METRIC_PROMETHEUS);
-        const std::string bind_address =
-            prometheus_config.GetValue(CONFIG_METRIC_PROMETHEUS_PORT, CONFIG_METRIC_PROMETHEUS_PORT_DEFAULT);
+        const std::string bind_address = config.GetMetricConfigPrometheusPort();
         const std::string uri = std::string("/tmp/metrics");
         const std::size_t num_threads = 2;
 
diff --git a/cpp/src/scheduler/SchedInst.cpp b/cpp/src/scheduler/SchedInst.cpp
index 0b1e7cd3025d4919453b33d411eaef9a41616658..54b870100ab2ba40eec4b404bec954c88e081b61 100644
--- a/cpp/src/scheduler/SchedInst.cpp
+++ b/cpp/src/scheduler/SchedInst.cpp
@@ -38,10 +38,9 @@ std::mutex JobMgrInst::mutex_;
 
 void
 load_simple_config() {
-    server::ConfigNode &config = server::ServerConfig::GetInstance().GetConfig(server::CONFIG_RESOURCE);
-    auto mode = config.GetValue(server::CONFIG_RESOURCE_MODE, server::CONFIG_RESOURCE_MODE_DEFAULT);
-
-    auto pool = config.GetSequence(server::CONFIG_RESOURCE_POOL);
+    server::ServerConfig &config = server::ServerConfig::GetInstance();
+    auto mode = config.GetResourceConfigMode();
+    auto pool = config.GetResourceConfigPool();
     bool cpu = false;
     std::set<uint64_t> gpu_ids;
     for (auto &resource : pool) {
diff --git a/cpp/src/server/DBWrapper.cpp b/cpp/src/server/DBWrapper.cpp
index 756438dfb347838afb0627a001c07fcb85ac8657..3d958b15a4dc0748b793efa4d51e70bf37eeb036 100644
--- a/cpp/src/server/DBWrapper.cpp
+++ b/cpp/src/server/DBWrapper.cpp
@@ -35,23 +35,20 @@ DBWrapper::DBWrapper() {
 }
 
 Status DBWrapper::StartService() {
+    ServerConfig& config = ServerConfig::GetInstance();
+
     //db config
     engine::DBOptions opt;
-    ConfigNode& db_config = ServerConfig::GetInstance().GetConfig(CONFIG_DB);
-    opt.meta.backend_uri = db_config.GetValue(CONFIG_DB_BACKEND_URL);
-    std::string db_path = db_config.GetValue(CONFIG_DB_PATH);
-    opt.meta.path = db_path + "/db";
+    opt.meta.backend_uri = config.GetDBConfigBackendUrl();
+    opt.meta.path = config.GetDBConfigPath() + "/db";
 
-    std::string db_slave_path = db_config.GetValue(CONFIG_DB_SLAVE_PATH);
+    std::string db_slave_path = config.GetDBConfigSlavePath();
     StringHelpFunctions::SplitStringByDelimeter(db_slave_path, ";", opt.meta.slave_paths);
 
     // cache config
-    ConfigNode& cache_config = ServerConfig::GetInstance().GetConfig(CONFIG_CACHE);
-    opt.insert_cache_immediately_ =
-        cache_config.GetBoolValue(CONFIG_CACHE_INSERT_IMMEDIATELY, std::stoi(CONFIG_CACHE_INSERT_IMMEDIATELY_DEFAULT));
+    opt.insert_cache_immediately_ = config.GetCacheConfigCacheInsertData();
 
-    ConfigNode& serverConfig = ServerConfig::GetInstance().GetConfig(CONFIG_SERVER);
-    std::string mode = serverConfig.GetValue(CONFIG_SERVER_MODE, CONFIG_SERVER_MODE_DEFAULT);
+    std::string mode = config.GetServerConfigMode();
     if (mode == "single") {
         opt.mode = engine::DBOptions::MODE::SINGLE;
     }
@@ -67,9 +64,7 @@ Status DBWrapper::StartService() {
     }
 
     // engine config
-    ConfigNode& engine_config = ServerConfig::GetInstance().GetConfig(CONFIG_ENGINE);
-    int32_t omp_thread =
-        engine_config.GetInt32Value(CONFIG_ENGINE_OMP_THREAD_NUM, std::stoi(CONFIG_ENGINE_OMP_THREAD_NUM_DEFAULT));
+    int32_t omp_thread = config.GetEngineConfigOmpThreadNum();
     if(omp_thread > 0) {
         omp_set_num_threads(omp_thread);
         SERVER_LOG_DEBUG << "Specify openmp thread number: " << omp_thread;
@@ -82,19 +77,16 @@ Status DBWrapper::StartService() {
     }
 
     //init faiss global variable
-    faiss::distance_compute_blas_threshold =
-        engine_config.GetInt32Value(CONFIG_ENGINE_BLAS_THRESHOLD, std::stoi(CONFIG_ENGINE_BLAS_THRESHOLD_DEFAULT));
+    faiss::distance_compute_blas_threshold = config.GetEngineConfigBlasThreshold();
 
     //set archive config
     engine::ArchiveConf::CriteriaT criterial;
-    int64_t disk =
-        db_config.GetInt64Value(CONFIG_DB_ARCHIVE_DISK_THRESHOLD, std::stoi(CONFIG_DB_ARCHIVE_DISK_THRESHOLD_DEFAULT));
-    int64_t days =
-        db_config.GetInt64Value(CONFIG_DB_ARCHIVE_DAYS_THRESHOLD, std::stoi(CONFIG_DB_ARCHIVE_DAYS_THRESHOLD_DEFAULT));
-    if(disk > 0) {
+    int32_t disk = config.GetDBConfigArchiveDiskThreshold();
+    int32_t days = config.GetDBConfigArchiveDaysThreshold();
+    if (disk > 0) {
         criterial[engine::ARCHIVE_CONF_DISK] = disk;
     }
-    if(days > 0) {
+    if (days > 0) {
         criterial[engine::ARCHIVE_CONF_DAYS] = days;
     }
     opt.meta.archive_conf.SetCriterias(criterial);
diff --git a/cpp/src/server/Server.cpp b/cpp/src/server/Server.cpp
index 7f85ed6509540dd942a2ae588473a7c3e28fb9e8..d8924e9d7dabc077a9de514cc9d10c16d446a994 100644
--- a/cpp/src/server/Server.cpp
+++ b/cpp/src/server/Server.cpp
@@ -162,9 +162,7 @@ Server::Start() {
 
         /* log path is defined in Config file, so InitLog must be called after LoadConfig */
         ServerConfig &config = ServerConfig::GetInstance();
-        ConfigNode server_config = config.GetConfig(CONFIG_SERVER);
-
-        std::string time_zone = server_config.GetValue(CONFIG_SERVER_TIME_ZONE, CONFIG_SERVER_TIME_ZONE_DEFAULT);
+        std::string time_zone = config.GetServerConfigTimeZone();
         if (time_zone.length() == 3) {
             time_zone = "CUT";
         } else {
@@ -232,8 +230,9 @@ Server::Stop() {
 
 ErrorCode
 Server::LoadConfig() {
-    ServerConfig::GetInstance().LoadConfigFile(config_filename_);
-    auto status = ServerConfig::GetInstance().ValidateConfig();
+    ServerConfig& server_config = ServerConfig::GetInstance();
+    server_config.LoadConfigFile(config_filename_);
+    auto status = server_config.ValidateConfig();
     if (!status.ok()) {
         std::cerr << "Failed to load config file: " << config_filename_ << std::endl;
         exit(0);
diff --git a/cpp/src/server/ServerConfig.cpp b/cpp/src/server/ServerConfig.cpp
index 0f51ecf6e2a7f20c3240d9fa17cedff1ee2d9fa2..35012192e888cd37fa80edbf99ee3c3f6528a59c 100644
--- a/cpp/src/server/ServerConfig.cpp
+++ b/cpp/src/server/ServerConfig.cpp
@@ -42,30 +42,29 @@ ServerConfig::GetInstance() {
 }
 
 Status
-ServerConfig::LoadConfigFile(const std::string &config_filename) {
-    std::string filename = config_filename;
+ServerConfig::LoadConfigFile(const std::string &filename) {
     if (filename.empty()) {
-        std::cerr << "ERROR: a config file is required" << std::endl;
-        exit(1);//directly exit program if config file not specified
+        std::cerr << "ERROR: need specify config file" << std::endl;
+        exit(1);
     }
-    struct stat directoryStat;
-    int statOK = stat(filename.c_str(), &directoryStat);
+    struct stat dirStat;
+    int statOK = stat(filename.c_str(), &dirStat);
     if (statOK != 0) {
-        std::cerr << "ERROR: " << filename << " not found!" << std::endl;
-        exit(1);//directly exit program if config file not found
+        std::cerr << "ERROR: Config file not exist: " << filename << std::endl;
+        exit(1);
     }
 
     try {
         ConfigMgr *mgr = const_cast<ConfigMgr *>(ConfigMgr::GetInstance());
         ErrorCode err = mgr->LoadConfigFile(filename);
         if (err != 0) {
-            std::cerr << "Server failed to load config file" << std::endl;
-            exit(1);//directly exit program if the config file is illegal
+            std::cerr << "Server failed to load config file: " << filename << std::endl;
+            exit(1);
         }
     }
     catch (YAML::Exception &e) {
-        std::cerr << "Server failed to load config file: " << std::endl;
-        exit(1);//directly exit program if the config file is illegal
+        std::cerr << "Server failed to load config file: " << filename << std::endl;
+        exit(1);
     }
 
     return Status::OK();
@@ -73,27 +72,25 @@ ServerConfig::LoadConfigFile(const std::string &config_filename) {
 
 Status
 ServerConfig::ValidateConfig() {
-
-    bool okay = true;
     if (!CheckServerConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "Server config validation check fail");
     }
     if (!CheckDBConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "DB config validation check fail");
     }
     if (!CheckMetricConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "Metric config validation check fail");
     }
     if (!CheckCacheConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "Cache config validation check fail");
     }
     if (!CheckEngineConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "Engine config validation check fail");
     }
     if (!CheckResourceConfig().ok()) {
-        okay = false;
+        return Status(SERVER_INVALID_ARGUMENT, "Resource config validation check fail");
     }
-    return (okay ? Status::OK() : Status(SERVER_INVALID_ARGUMENT, "Config validation not pass"));
+    return Status::OK();
 }
 
 Status
@@ -201,18 +198,18 @@ ServerConfig::CheckDBConfig() {
         okay = false;
     }
 
-    std::string insert_buffer_size_str = db_config.GetValue(CONFIG_DB_BUFFER_SIZE, CONFIG_DB_BUFFER_SIZE_DEFAULT);
-    if (!ValidationUtil::ValidateStringIsNumber(insert_buffer_size_str).ok()) {
-        std::cerr << "ERROR: insert_buffer_size " << insert_buffer_size_str << " is not a number" << std::endl;
+    std::string buffer_size_str = db_config.GetValue(CONFIG_DB_BUFFER_SIZE, CONFIG_DB_BUFFER_SIZE_DEFAULT);
+    if (!ValidationUtil::ValidateStringIsNumber(buffer_size_str).ok()) {
+        std::cerr << "ERROR: buffer_size " << buffer_size_str << " is not a number" << std::endl;
         okay = false;
     }
     else {
-        uint64_t insert_buffer_size = (uint64_t) std::stol(insert_buffer_size_str);
-        insert_buffer_size *= GB;
+        uint64_t buffer_size = (uint64_t) std::stol(buffer_size_str);
+        buffer_size *= GB;
         unsigned long total_mem = 0, free_mem = 0;
         CommonUtil::GetSystemMemInfo(total_mem, free_mem);
-        if (insert_buffer_size >= total_mem) {
-            std::cerr << "ERROR: insert_buffer_size exceed system memory" << std::endl;
+        if (buffer_size >= total_mem) {
+            std::cerr << "ERROR: buffer_size exceed system memory" << std::endl;
             okay = false;
         }
     }
@@ -317,7 +314,7 @@ ServerConfig::CheckCacheConfig() {
     }
 
     std::string insert_cache_immediately_str =
-        cache_config.GetValue(CONFIG_CACHE_INSERT_IMMEDIATELY, CONFIG_CACHE_INSERT_IMMEDIATELY_DEFAULT);
+        cache_config.GetValue(CONFIG_CACHE_CACHE_INSERT_DATA, CONFIG_CACHE_CACHE_INSERT_DATA_DEFAULT);
     if (!ValidationUtil::ValidateStringIsBool(insert_cache_immediately_str).ok()) {
         std::cerr << "ERROR: invalid insert_cache_immediately config: " << insert_cache_immediately_str << std::endl;
         okay = false;
@@ -629,6 +626,171 @@ ServerConfig::GetConfig(const std::string &name) {
     return root_node.GetChild(name);
 }
 
+/* server config */
+std::string
+ServerConfig::GetServerConfigAddress() {
+    ConfigNode server_config = GetConfig(CONFIG_SERVER);
+    return server_config.GetValue(CONFIG_SERVER_ADDRESS,
+                                  CONFIG_SERVER_ADDRESS_DEFAULT);
+}
+
+std::string
+ServerConfig::GetServerConfigPort() {
+    ConfigNode server_config = GetConfig(CONFIG_SERVER);
+    return server_config.GetValue(CONFIG_SERVER_PORT,
+                                  CONFIG_SERVER_PORT_DEFAULT);
+}
+
+std::string
+ServerConfig::GetServerConfigMode() {
+    ConfigNode server_config = GetConfig(CONFIG_SERVER);
+    return server_config.GetValue(CONFIG_SERVER_MODE,
+                                  CONFIG_SERVER_MODE_DEFAULT);
+}
+
+std::string
+ServerConfig::GetServerConfigTimeZone() {
+    ConfigNode server_config = GetConfig(CONFIG_SERVER);
+    return server_config.GetValue(CONFIG_SERVER_TIME_ZONE,
+                                  CONFIG_SERVER_TIME_ZONE_DEFAULT);
+}
+
+/* db config */
+std::string
+ServerConfig::GetDBConfigPath() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetValue(CONFIG_DB_PATH,
+                              CONFIG_DB_PATH_DEFAULT);
+}
+
+std::string
+ServerConfig::GetDBConfigSlavePath() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetValue(CONFIG_DB_SLAVE_PATH,
+                              CONFIG_DB_SLAVE_PATH_DEFAULT);
+}
+
+std::string
+ServerConfig::GetDBConfigBackendUrl() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetValue(CONFIG_DB_BACKEND_URL,
+                              CONFIG_DB_BACKEND_URL_DEFAULT);
+}
+
+int32_t
+ServerConfig::GetDBConfigArchiveDiskThreshold() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetInt32Value(CONFIG_DB_ARCHIVE_DISK_THRESHOLD,
+                                   std::stoi(CONFIG_DB_ARCHIVE_DISK_THRESHOLD_DEFAULT));
+}
+
+int32_t
+ServerConfig::GetDBConfigArchiveDaysThreshold() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetInt32Value(CONFIG_DB_ARCHIVE_DAYS_THRESHOLD,
+                                   std::stoi(CONFIG_DB_ARCHIVE_DAYS_THRESHOLD_DEFAULT));
+}
+
+int32_t
+ServerConfig::GetDBConfigBufferSize() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetInt32Value(CONFIG_DB_BUFFER_SIZE,
+                                   std::stoi(CONFIG_DB_BUFFER_SIZE_DEFAULT));
+}
+
+int32_t
+ServerConfig::GetDBConfigBuildIndexGPU() {
+    ConfigNode db_config = GetConfig(CONFIG_DB);
+    return db_config.GetInt32Value(CONFIG_DB_BUILD_INDEX_GPU,
+                                   std::stoi(CONFIG_DB_BUILD_INDEX_GPU_DEFAULT));
+}
+
+/* metric config */
+bool
+ServerConfig::GetMetricConfigAutoBootup() {
+    ConfigNode metric_config = GetConfig(CONFIG_METRIC);
+    return metric_config.GetBoolValue(CONFIG_METRIC_AUTO_BOOTUP,
+                                      std::stoi(CONFIG_METRIC_AUTO_BOOTUP_DEFAULT));
+}
+
+std::string
+ServerConfig::GetMetricConfigCollector() {
+    ConfigNode metric_config = GetConfig(CONFIG_METRIC);
+    return metric_config.GetValue(CONFIG_METRIC_COLLECTOR,
+                                  CONFIG_METRIC_COLLECTOR_DEFAULT);
+}
+
+std::string
+ServerConfig::GetMetricConfigPrometheusPort() {
+    ConfigNode metric_config = GetConfig(CONFIG_METRIC);
+    return metric_config.GetValue(CONFIG_METRIC_PROMETHEUS_PORT,
+                                  CONFIG_METRIC_PROMETHEUS_PORT_DEFAULT);
+}
+
+/* cache config */
+int32_t
+ServerConfig::GetCacheConfigCpuMemCapacity() {
+    ConfigNode cache_config = GetConfig(CONFIG_CACHE);
+    return cache_config.GetInt32Value(CONFIG_CACHE_CPU_MEM_CAPACITY,
+                                      std::stoi(CONFIG_CACHE_CPU_MEM_CAPACITY_DEFAULT));
+}
+
+float
+ServerConfig::GetCacheConfigCpuMemThreshold() {
+    ConfigNode cache_config = GetConfig(CONFIG_CACHE);
+    return cache_config.GetFloatValue(CONFIG_CACHE_CPU_MEM_THRESHOLD,
+                                      std::stof(CONFIG_CACHE_CPU_MEM_THRESHOLD_DEFAULT));
+}
+
+int32_t
+ServerConfig::GetCacheConfigGpuMemCapacity() {
+    ConfigNode cache_config = GetConfig(CONFIG_CACHE);
+    return cache_config.GetInt32Value(CONFIG_CACHE_GPU_MEM_CAPACITY,
+                                      std::stoi(CONFIG_CACHE_GPU_MEM_CAPACITY_DEFAULT));
+}
+
+float
+ServerConfig::GetCacheConfigGpuMemThreshold() {
+    ConfigNode cache_config = GetConfig(CONFIG_CACHE);
+    return cache_config.GetFloatValue(CONFIG_CACHE_GPU_MEM_THRESHOLD,
+                                      std::stof(CONFIG_CACHE_GPU_MEM_THRESHOLD_DEFAULT));
+}
+
+bool
+ServerConfig::GetCacheConfigCacheInsertData() {
+    ConfigNode cache_config = GetConfig(CONFIG_CACHE);
+    return cache_config.GetBoolValue(CONFIG_CACHE_CACHE_INSERT_DATA,
+                                     std::stoi(CONFIG_CACHE_CACHE_INSERT_DATA_DEFAULT));
+}
+
+/* engine config */
+int32_t
+ServerConfig::GetEngineConfigBlasThreshold() {
+    ConfigNode engine_config = GetConfig(CONFIG_ENGINE);
+    return engine_config.GetInt32Value(CONFIG_ENGINE_BLAS_THRESHOLD,
+                                       std::stoi(CONFIG_ENGINE_BLAS_THRESHOLD_DEFAULT));
+}
+
+int32_t
+ServerConfig::GetEngineConfigOmpThreadNum() {
+    ConfigNode engine_config = GetConfig(CONFIG_ENGINE);
+    return engine_config.GetInt32Value(CONFIG_ENGINE_OMP_THREAD_NUM,
+                                       std::stoi(CONFIG_ENGINE_OMP_THREAD_NUM_DEFAULT));
+}
+
+/* resource config */
+std::string
+ServerConfig::GetResourceConfigMode() {
+    ConfigNode resource_config = GetConfig(CONFIG_RESOURCE);
+    return resource_config.GetValue(CONFIG_RESOURCE_MODE,
+                                    CONFIG_RESOURCE_MODE_DEFAULT);
+}
+
+std::vector<std::string>
+ServerConfig::GetResourceConfigPool() {
+    ConfigNode resource_config = GetConfig(CONFIG_RESOURCE);
+    return resource_config.GetSequence(CONFIG_RESOURCE_POOL);
+}
 
 }
 }
diff --git a/cpp/src/server/ServerConfig.h b/cpp/src/server/ServerConfig.h
index e515b74645e8efaea0630c1c606544f410e3d72e..1453adde49d5a4173f22de90f576f854240a72d2 100644
--- a/cpp/src/server/ServerConfig.h
+++ b/cpp/src/server/ServerConfig.h
@@ -39,11 +39,11 @@ static const char* CONFIG_SERVER_TIME_ZONE_DEFAULT = "UTC+8";
 
 /* db config */
 static const char* CONFIG_DB = "db_config";
-static const char* CONFIG_DB_PATH = "db_path";
+static const char* CONFIG_DB_PATH = "path";
 static const char* CONFIG_DB_PATH_DEFAULT = "/tmp/milvus";
-static const char* CONFIG_DB_SLAVE_PATH = "db_slave_path";
+static const char* CONFIG_DB_SLAVE_PATH = "slave_path";
 static const char* CONFIG_DB_SLAVE_PATH_DEFAULT = "";
-static const char* CONFIG_DB_BACKEND_URL = "db_backend_url";
+static const char* CONFIG_DB_BACKEND_URL = "backend_url";
 static const char* CONFIG_DB_BACKEND_URL_DEFAULT = "sqlite://:@:/";
 static const char* CONFIG_DB_ARCHIVE_DISK_THRESHOLD = "archive_disk_threshold";
 static const char* CONFIG_DB_ARCHIVE_DISK_THRESHOLD_DEFAULT = "0";
@@ -64,8 +64,8 @@ static const char* CONFIG_CACHE_CPU_MEM_THRESHOLD = "cpu_mem_threshold";
 static const char* CONFIG_CACHE_CPU_MEM_THRESHOLD_DEFAULT = "0.85";
 static const char* CONFIG_CACHE_GPU_MEM_THRESHOLD = "gpu_mem_threshold";
 static const char* CONFIG_CACHE_GPU_MEM_THRESHOLD_DEFAULT = "0.85";
-static const char* CONFIG_CACHE_INSERT_IMMEDIATELY = "insert_immediately";
-static const char* CONFIG_CACHE_INSERT_IMMEDIATELY_DEFAULT = "0";
+static const char* CONFIG_CACHE_CACHE_INSERT_DATA = "cache_insert_data";
+static const char* CONFIG_CACHE_CACHE_INSERT_DATA_DEFAULT = "0";
 
 /* metric config */
 static const char* CONFIG_METRIC = "metric_config";
@@ -95,20 +95,51 @@ class ServerConfig {
  public:
     static ServerConfig &GetInstance();
 
-    Status LoadConfigFile(const std::string& config_filename);
+    Status LoadConfigFile(const std::string& filename);
     Status ValidateConfig();
     void PrintAll() const;
 
+ private:
     ConfigNode GetConfig(const std::string& name) const;
     ConfigNode& GetConfig(const std::string& name);
 
- private:
     Status CheckServerConfig();
     Status CheckDBConfig();
     Status CheckMetricConfig();
     Status CheckCacheConfig();
     Status CheckEngineConfig();
     Status CheckResourceConfig();
+
+ public:
+    std::string GetServerConfigAddress();
+    std::string GetServerConfigPort();
+    std::string GetServerConfigMode();
+    std::string GetServerConfigTimeZone();
+
+    std::string GetDBConfigPath();
+    std::string GetDBConfigSlavePath();
+    std::string GetDBConfigBackendUrl();
+    int32_t     GetDBConfigArchiveDiskThreshold();
+    int32_t     GetDBConfigArchiveDaysThreshold();
+    int32_t     GetDBConfigBufferSize();
+    int32_t     GetDBConfigBuildIndexGPU();
+
+    bool        GetMetricConfigAutoBootup();
+    std::string GetMetricConfigCollector();
+    std::string GetMetricConfigPrometheusPort();
+
+    int32_t     GetCacheConfigCpuMemCapacity();
+    float       GetCacheConfigCpuMemThreshold();
+    int32_t     GetCacheConfigGpuMemCapacity();
+    float       GetCacheConfigGpuMemThreshold();
+    bool        GetCacheConfigCacheInsertData();
+
+    int32_t     GetEngineConfigBlasThreshold();
+    int32_t     GetEngineConfigOmpThreadNum();
+
+    std::string GetResourceConfigMode();
+    std::vector<std::string>
+                GetResourceConfigPool();
 };
 
 }
diff --git a/cpp/src/server/grpc_impl/GrpcServer.cpp b/cpp/src/server/grpc_impl/GrpcServer.cpp
index 5160e0c8add6d9c92e5566a1704bf5c3f1e8bbed..e330f5483c9f0b9eed5a46e5b81e8c32bedbbce2 100644
--- a/cpp/src/server/grpc_impl/GrpcServer.cpp
+++ b/cpp/src/server/grpc_impl/GrpcServer.cpp
@@ -74,12 +74,10 @@ GrpcServer::Stop() {
 Status
 GrpcServer::StartService() {
     ServerConfig &config = ServerConfig::GetInstance();
-    ConfigNode server_config = config.GetConfig(CONFIG_SERVER);
-    ConfigNode engine_config = config.GetConfig(CONFIG_ENGINE);
-    std::string address = server_config.GetValue(CONFIG_SERVER_ADDRESS, CONFIG_SERVER_ADDRESS_DEFAULT);
-    int32_t port = server_config.GetInt32Value(CONFIG_SERVER_PORT, std::stoi(CONFIG_SERVER_PORT_DEFAULT));
+    std::string address = config.GetServerConfigAddress();
+    std::string port = config.GetServerConfigPort();
 
-    std::string server_address(address + ":" + std::to_string(port));
+    std::string server_address(address + ":" + port);
 
     ::grpc::ServerBuilder builder;
     builder.SetOption(std::unique_ptr<::grpc::ServerBuilderOption>(new NoReusePortOption));
diff --git a/cpp/src/wrapper/KnowhereResource.cpp b/cpp/src/wrapper/KnowhereResource.cpp
index e59b56b5742a28eb8779530d6425910bd197e872..dfd75df25376c49645d9fde1e6e06d4b17495fbf 100644
--- a/cpp/src/wrapper/KnowhereResource.cpp
+++ b/cpp/src/wrapper/KnowhereResource.cpp
@@ -38,16 +38,13 @@ ErrorCode KnowhereResource::Initialize() {
     GpuResourcesArray gpu_resources;
 
     //get build index gpu resource
-    server::ServerConfig& root_config = server::ServerConfig::GetInstance();
-    server::ConfigNode& db_config = root_config.GetConfig(server::CONFIG_DB);
+    server::ServerConfig& config = server::ServerConfig::GetInstance();
 
-    int32_t build_index_gpu =
-        db_config.GetInt32Value(server::CONFIG_DB_BUILD_INDEX_GPU, std::stoi(server::CONFIG_DB_BUILD_INDEX_GPU_DEFAULT));
+    int32_t build_index_gpu = config.GetDBConfigBuildIndexGPU();
     gpu_resources.insert(std::make_pair(build_index_gpu, GpuResourceSetting()));
 
     //get search gpu resource
-    server::ConfigNode& res_config = root_config.GetConfig(server::CONFIG_RESOURCE);
-    auto pool = res_config.GetSequence(server::CONFIG_RESOURCE_POOL);
+    auto pool = config.GetResourceConfigPool();
     std::set<uint64_t> gpu_ids;
     for (auto &resource : pool) {
         if (resource.length() < 4 || resource.substr(0, 3) != "gpu") {