diff --git a/src/sf_configs.c b/src/sf_configs.c
index eb1b852..825798e 100644
--- a/src/sf_configs.c
+++ b/src/sf_configs.c
@@ -78,3 +78,24 @@ void sf_net_retry_config_to_string(SFNetRetryConfig *net_retry_cfg,
             net_retry_cfg->network_retry_times,
             net_retry_cfg->network_retry_interval_ms);
 }
+
+void sf_load_read_rule_config(SFDataReadRule *rule, IniFullContext *ini_ctx)
+{
+    char *read_rule;
+    read_rule = iniGetStrValue(ini_ctx->section_name,
+            "read_rule", ini_ctx->context);
+    if (read_rule == NULL || *read_rule == '\0') {
+        *rule = sf_data_read_rule_any_available;
+    } else if (strncasecmp(read_rule, "any", 3)) {
+        *rule = sf_data_read_rule_any_available;
+    } else if (strncasecmp(read_rule, "slave", 5)) {
+        *rule = sf_data_read_rule_slave_first;
+    } else if (strncasecmp(read_rule, "master", 6)) {
+        *rule = sf_data_read_rule_master_only;
+    } else {
+        logError("file: "__FILE__", line: %d, "
+                "config file: %s, unkown read_rule: %s, set to any",
+                __LINE__, ini_ctx->filename, read_rule);
+        *rule = sf_data_read_rule_any_available;
+    }
+}
diff --git a/src/sf_configs.h b/src/sf_configs.h
index 9576966..fa68619 100644
--- a/src/sf_configs.h
+++ b/src/sf_configs.h
@@ -1,7 +1,7 @@
-//sf_global.h
+//sf_configs.h
 
-#ifndef _SF_GLOBAL_H
-#define _SF_GLOBAL_H
+#ifndef _SF_CONFIGS_H
+#define _SF_CONFIGS_H
 
 #include "fastcommon/common_define.h"
 #include "fastcommon/ini_file_reader.h"
@@ -22,6 +22,12 @@ typedef struct sf_net_retry_config {
     int network_retry_interval_ms;
 } SFNetRetryConfig;
 
+typedef enum sf_data_read_rule {
+    sf_data_read_rule_any_available,
+    sf_data_read_rule_slave_first,
+    sf_data_read_rule_master_only,
+} SFDataReadRule;
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -32,6 +38,23 @@ int sf_load_net_retry_config(SFNetRetryConfig *net_retry_cfg,
 void sf_net_retry_config_to_string(SFNetRetryConfig *net_retry_cfg,
         char *output, const int size);
 
+void sf_load_read_rule_config(SFDataReadRule *rule, IniFullContext *ini_ctx);
+
+static inline const char *sf_get_read_rule_caption(
+        const SFDataReadRule read_rule)
+{
+    switch (read_rule) {
+        case sf_data_read_rule_any_available:
+            return "any available";
+        case sf_data_read_rule_slave_first:
+            return "slave first";
+        case sf_data_read_rule_master_only:
+            return "master only";
+        default:
+            return "unknown";
+    }
+}
+
 #ifdef __cplusplus
 }
 #endif