主从同步性能优化，主从同步性能测试。

common/config.c

@@ -58,6 +58,7 @@ static void set_default_config(AppConfig *cfg)
     cfg->persistence = PERSIST_NONE;
     cfg->allocator   = ALLOC_JEMALLOC;
     cfg->leak_mode   = MEMLEAK_DETECT_OFF;
+    cfg->replica_mode = REPLICA_DISABLE;
 }
 
 /* ---- 字符串转枚举 ---- */
@@ -103,6 +104,14 @@ static void parse_leakage(const char *s, MemLeakDetectMode *out)
     else *out = MEMLEAK_DETECT_OFF;
 }
 
+static void parse_replica(const char *s, ReplicaMode *out)
+{
+    if (!s || !out) return;
+    if (!strcasecmp(s, "enable")) *out = REPLICA_ENABLE;
+    else if (!strcasecmp(s, "disable")) *out = REPLICA_DISABLE;
+    else *out = REPLICA_DISABLE;
+}
+
 static int read_file_mmap(const char *filename, void **out_addr, size_t *out_len, int *out_fd) {
     if (!filename || !out_addr || !out_len || !out_fd) return -1;
 
@@ -199,6 +208,16 @@ const char *leakage_to_string(MemLeakDetectMode a)
     }
 }
 
+const char *replica_to_string(ReplicaMode a)
+{
+    switch (a) {
+    case MEMLEAK_DETECT_ON:     return "enable";
+    case MEMLEAK_DETECT_OFF:    return "disable";
+    default:             return "unknown";
+    }
+}
+
+
 /* ---- 主函数：从 XML 加载配置 ---- */
 
 /* server 部分 */
@@ -236,6 +255,15 @@ void server_load(xmlNodePtr *root, AppConfig *out_cfg){
             }
         }
 
+        xmlNodePtr replica_node = find_child(server, "replica");
+        if (replica_node) {
+            xmlChar *txt = xmlNodeGetContent(replica_node);
+            if (txt) {
+                parse_replica((char *)txt, &out_cfg->replica_mode);
+                xmlFree(txt);
+            }
+        }
+
         /* master (always read if present) */
         xmlNodePtr master = find_child(server, "master");
         if (master) {