{"id":19473,"date":"2026-05-18T15:08:29","date_gmt":"2026-05-18T13:08:29","guid":{"rendered":"https:\/\/webhosting.de\/database-replication-consistency-split-brain-strategien-failover\/"},"modified":"2026-05-18T15:08:29","modified_gmt":"2026-05-18T13:08:29","slug":"%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%83%ac%e3%83%97%e3%83%aa%e3%82%b1%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e4%b8%80%e8%b2%ab%e6%80%a7%e3%82%b9%e3%83%97%e3%83%aa%e3%83%83%e3%83%88","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/database-replication-consistency-split-brain-strategien-failover\/","title":{"rendered":"MySQL\u30af\u30e9\u30b9\u30bf\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30fb\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u8cab\u6027\u3068\u30b9\u30d7\u30ea\u30c3\u30c8\u30d6\u30ec\u30a4\u30f3\u306e\u7406\u89e3"},"content":{"rendered":"<p>\u79c1\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u304b <strong>\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u8cab\u6027<\/strong> MySQL\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306b\u304a\u3044\u3066\u3001\u4e9b\u7d30\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u969c\u5bb3\u3067\u3055\u3048\u3082\u30b9\u30d7\u30ea\u30c3\u30c8\u30d6\u30ec\u30a4\u30f3\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u7406\u7531\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u4e00\u8cab\u6027\u30e2\u30c7\u30eb\u3001\u30af\u30a9\u30fc\u30e9\u30e0\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u9023\u52d5\u3057\u3001\u30a8\u30e9\u30fc\u30b7\u30ca\u30ea\u30aa\u3092\u7d20\u65e9\u304f\u5c01\u3058\u8fbc\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3092\u5b9f\u8df5\u7684\u306a\u65b9\u6cd5\u3067\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<p>\u307e\u305a\u3001\u512a\u5148\u9806\u4f4d\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u6700\u3082\u91cd\u8981\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u8981\u7d04\u3059\u308b\u3002 <strong>\u30ea\u30b9\u30af<\/strong> \u3092\u8a55\u4fa1\u3059\u308b\u3002\u3059\u3079\u3066\u306e\u30c8\u30dd\u30ed\u30b8\u30fc\u306e\u6c7a\u5b9a\u306f\u4e00\u8cab\u6027\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3001\u56de\u5fa9\u6027\u306b\u5f71\u97ff\u3059\u308b\u305f\u3081\u3001\u610f\u8b58\u7684\u306b\u8a55\u4fa1\u3057\u3001\u6587\u66f8\u5316\u3059\u308b\u3002\u30af\u30a9\u30fc\u30e9\u30e0\u3001\u66f8\u304d\u8fbc\u307f\u30ac\u30a4\u30c0\u30f3\u30b9\u3001\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u30fb\u30eb\u30fc\u30eb\u306f\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u30fb\u30ce\u30fc\u30c9\u3092\u3081\u3050\u308b\u4e89\u3044\u3092\u9632\u304e <strong>\u7b46\u8a18\u8ca0\u8377<\/strong> \u30af\u30ea\u30fc\u30f3\u306a\u30c1\u30e3\u30f3\u30cd\u30eb\u3002.<\/p>\n<ul>\n  <li><strong>\u4e00\u8cab\u6027\u306e\u76ee\u6a19<\/strong> \u660e\u78ba\u306b\u5b9a\u7fa9\u3059\u308b\uff08RPO\/RTO\u3001\u30ea\u30fc\u30c9\u30fb\u30a2\u30d5\u30bf\u30fc\u30fb\u30e9\u30a4\u30c8\uff09<\/li>\n  <li><strong>\u30c8\u30dd\u30ed\u30b8\u30fc<\/strong> \u9069\u5207\u306a\u3082\u306e\u3092\u9078\u629e\u3059\u308b\uff08\u30d7\u30e9\u30a4\u30de\u30ea\u30ec\u30d7\u30ea\u30ab\u3001\u30de\u30eb\u30c1\u30de\u30b9\u30bf\u30fc\u3001\u30af\u30e9\u30b9\u30bf\uff09<\/li>\n  <li><strong>\u5b9a\u8db3\u6570<\/strong> \u30bb\u30ad\u30e5\u30a2<\/li>\n  <li><strong>\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc<\/strong> \u53b3\u683c\u306a\u5236\u5fa1\uff08\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3001VIP\/DNS\u3001\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\uff09<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u62e1\u5f35\uff08\u30e9\u30b0\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3001\u30d8\u30eb\u30b9\u3001\u30a2\u30e9\u30fc\u30e0\uff09<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u790e\u77f3\u306f\u3001\u79c1\u306b\u6c7a\u65ad\u306e\u305f\u3081\u306e\u5b89\u5b9a\u3057\u305f\u7f85\u91dd\u76e4\u3092\u4e0e\u3048\u3001\u5931\u6557\u3057\u305f\u5834\u5408\u306e\u884c\u52d5\u4e3b\u7fa9\u3092\u9632\u3050\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u79c1\u306f\u4e00\u8cab\u6027\u3092\u4fdd\u3061 <strong>\u7a7a\u5ba4\u72b6\u6cc1<\/strong> \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u4e0b\u306b\u3042\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/mysql-datenbank-verstehen-7261.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>MySQL\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4ed5\u7d44\u307f<\/h2>\n\n<p>\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\u306f <strong>\u30d7\u30e9\u30a4\u30de\u30ea\u30fc<\/strong> \u5931\u6557\u3092\u7de9\u548c\u3057\u3001\u8aad\u307f\u53d6\u308a\u30a2\u30af\u30bb\u30b9\u3092\u5206\u6563\u3055\u305b\u308b\u305f\u3081\u306b\u30011\u3064\u4ee5\u4e0a\u306e\u30ec\u30d7\u30ea\u30ab\u306b\u66f8\u304d\u8fbc\u307f\u3092\u96c6\u4e2d\u3055\u305b\u308b\u3002\u30d7\u30e9\u30a4\u30de\u30ea-\u30ec\u30d7\u30ea\u30ab\u30c8\u30dd\u30ed\u30b8\u306f\u3001\u66f8\u304d\u8fbc\u307f\u3092\u4e00\u5143\u7684\u306b\u30d0\u30f3\u30c9\u30eb\u3057\u3001\u30ec\u30d7\u30ea\u30ab\u306f\u8aad\u307f\u8fbc\u307f\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u5206\u6790\u3092\u62c5\u5f53\u3059\u308b\u3002\u30de\u30eb\u30c1\u30de\u30b9\u30bf\u30fc\u306f\u66f8\u304d\u8fbc\u307f\u3092\u8907\u6570\u306e\u30ce\u30fc\u30c9\u306b\u5206\u6563\u3059\u308b\u304c\u3001\u53b3\u683c\u306a\u7af6\u5408\u30eb\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002\u8abf\u6574\u30ec\u30d9\u30eb\u3092\u6301\u3064\u30af\u30e9\u30b9\u30bf\u306f\u3001\u30c7\u30fc\u30bf\u30ec\u30d9\u30eb\u3068\u30af\u30a9\u30fc\u30e9\u30e0\u3092\u30ea\u30f3\u30af\u3055\u305b\u308b\u3002\u30d0\u30ea\u30a2\u30f3\u30c8\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%83%ac%e3%83%97%e3%83%aa%e3%82%b1%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%83%9e%e3%82%b9\/\">MySQL\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bf\u30a4\u30d7<\/a> \u3092\u53c2\u8003\u306b\u3057\u3066\u3044\u308b\u3002\u6700\u7d42\u7684\u306b\u91cd\u8981\u306a\u306e\u306f\u3001\u66f8\u304d\u8fbc\u307f\u304c\u660e\u78ba\u306b\u7ba1\u7406\u3055\u308c\u3001\u4e00\u8cab\u6027\u304c\u7f6e\u304d\u53bb\u308a\u306b\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u8aad\u307f\u51fa\u3057\u30d1\u30b9\u3092\u610f\u8b58\u7684\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u3053\u3068\u3060\u3002 <strong>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0<\/strong> \u82e6\u3057\u3093\u3067\u3044\u308b\u3002.<\/p>\n\n<h2>\u5206\u96e2\u30ec\u30d9\u30eb\u3068\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u8a2d\u8a08<\/h2>\n\n<p>\u79c1\u306f\u3044\u3064\u3082\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092 <strong>\u30c9\u30e9\u30d5\u30c8\u53d6\u5f15<\/strong>. .MySQL\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067REPEATABLE READ\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306fOLTP\u306b\u306f\u5805\u7262\u3067\u3059\u304c\u3001\u9577\u3044\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3088\u308a\u9ad8\u901f\u306a\u8aad\u307f\u53d6\u308a\u30ec\u30fc\u30c8\u3092\u751f\u6210\u3057\u307e\u3059\u3002 <em>\u30e9\u30b0<\/em>, \u306a\u305c\u306a\u3089\u3001\u591a\u304f\u306e\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u4fdd\u6301\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3042\u308b\u3002\u9078\u629e\u7684\u306a\u66f4\u65b0\u304c\u591a\u3044\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3067\u306f\u3001\u30ed\u30c3\u30af\u3084\u526f\u4f5c\u7528\u3092\u6e1b\u3089\u3059\u305f\u3081\u306bREAD COMMITTED\u3092\u4f7f\u3046\u3053\u3068\u3082\u3042\u308b\u3002\u79c1\u306f\u3001\u30d0\u30c3\u30c1\u306e\u5909\u66f4\u304c\u5c0f\u3055\u304f\u306a\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3001, <strong>\u6642\u9650\u7684<\/strong> \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u4ee3\u308f\u308a\u306b\u3001\u5206\u5358\u4f4d\u306e \u201e\u30e1\u30ac\u30fb\u30b3\u30df\u30c3\u30c8 \u201c\u3092\u5b9f\u884c\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d0\u30a4\u30ca\u30ea\u30ed\u30b0\u304c\u30b3\u30f3\u30d1\u30af\u30c8\u306b\u4fdd\u305f\u308c\u3001\u30ec\u30d7\u30ea\u30abSQL\u30b9\u30ec\u30c3\u30c9\u304c\u30b9\u30bf\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u306a\u304f\u306a\u308a <em>\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30e9\u30b0<\/em> \u306e\u65b9\u304c\u3086\u3063\u304f\u308a\u3068\u84c4\u7a4d\u3055\u308c\u308b\u3002\u3092\u4f7f\u3044\u305f\u304f\u306a\u3044\u5834\u5408\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u5f62\u5f0f\u306e\u975e\u6c7a\u5b9a\u6027\u95a2\u6570\uff08\u4f8b\u3048\u3070\u3001\u30d5\u30a3\u30c3\u30af\u30b9\u306a\u3057\u306eNOW()\uff09\u3082\u907f\u3051\u308b\u3002 <strong>\u884c\u30d9\u30fc\u30b9<\/strong> \u305d\u3046\u3067\u306a\u3051\u308c\u3070\u3001\u4e56\u96e2\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u3002.<\/p>\n\n<h2>\u4e00\u8cab\u6027\u30e2\u30c7\u30eb\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u8aac\u660e<\/h2>\n\n<p>\u79c1\u306f\u6b21\u306e\u3088\u3046\u306b\u533a\u5225\u3057\u3066\u3044\u308b\u3002 <strong>\u5f37\u3044<\/strong> \u4e00\u8cab\u6027\u3001\u6700\u7d42\u7684\u306a\u4e00\u8cab\u6027\u3001\u30ea\u30fc\u30c9\u30fb\u30a2\u30d5\u30bf\u30fc\u30fb\u30e9\u30a4\u30c8\u3002\u5f37\u3044\u4e00\u8cab\u6027\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u6210\u529f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u308b\u524d\u306b\u3001\u8907\u6570\u306e\u30ce\u30fc\u30c9\u304c\u78ba\u8a8d\u3059\u308b\u30b3\u30df\u30c3\u30c8\u3092\u5fc5\u8981\u3068\u3059\u308b\u3002\u5076\u767a\u7684\u4e00\u8cab\u6027\u306f\u3001\u30ec\u30d7\u30ea\u30ab\u304c\u8ffd\u3044\u3064\u304f\u307e\u3067\u306e\u77ed\u671f\u7684\u306a\u5dee\u7570\u3092\u53d7\u3051\u5165\u308c\u308b\u3002Read-after-Write\u306f\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u53e4\u3044\u30c7\u30fc\u30bf\u3092\u898b\u305f\u307e\u307e\u3067\u3042\u3063\u3066\u3082\u3001\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30e6\u30fc\u30b6\u30fc\u304c\u81ea\u5206\u306e\u5909\u66f4\u3092\u3059\u3050\u306b\u8aad\u3081\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u30d3\u30b8\u30cd\u30b9\u30fb\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u79c1\u306f\u5f37\u529b\u306a\u4e00\u8cab\u6027\u307e\u305f\u306fRead-after-Write\u4e00\u8cab\u6027\u306b\u4f9d\u5b58\u3057\u3001\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u306f\u5076\u767a\u7684\u4e00\u8cab\u6027\u3092\u4f7f\u7528\u3059\u308b\u3002\u3053\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306b\u3088\u308a\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u6291\u5236\u3057\u3001\u540c\u6642\u306b <strong>\u30c7\u30fc\u30bf\u306e\u5b8c\u5168\u6027<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/mysql_cluster_meeting_8493.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7a2e\u985e\u3068\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/h2>\n\n<p>\u975e\u540c\u671f\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u306e\u306f\u3001\u6700\u5927\u9650\u306e\u66f8\u304d\u8fbc\u307f\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u5fc5\u8981\u306a\u3068\u304d\u3068\u3001\u3042\u308b\u4e00\u5b9a\u306e <strong>RPO<\/strong> \u53d7\u3051\u5165\u308c\u308b\u3002\u6e96\u540c\u671f\u65b9\u5f0f\u306f\u30c7\u30fc\u30bf\u640d\u5931\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3059\u308b\u304c\u3001\u30b3\u30df\u30c3\u30c8\u3054\u3068\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3002\u540c\u671f\u65b9\u5f0f\u306f\u4e00\u8cab\u6027\u3092\u5f37\u304f\u4fdd\u8a3c\u3059\u308b\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9045\u5ef6\u3084\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u3044\u3002\u30ce\u30fc\u30c9\u9593\u306e\u8ddd\u96e2\u304c\u9577\u304f\u306a\u308b\u3068\u3001\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u30bf\u30a4\u30e0\u3082\u9577\u304f\u306a\u308a\u3001\u540c\u671f\u30b3\u30df\u30c3\u30c8\u304c\u8457\u3057\u304f\u9045\u304f\u306a\u308b\u3002\u9045\u5ef6\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u79c1\u306f\u7a4d\u6975\u7684\u306b <a href=\"https:\/\/webhosting.de\/ja\/mysql-%e3%83%ac%e3%83%97%e3%83%aa%e3%82%b1%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%81%ae%e9%81%85%e5%bb%b6-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%81%ae%e6%9c%80%e9%81%a9%e5%8c%96\/\">MySQL\u306b\u304a\u3051\u308b\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9045\u5ef6<\/a>, \u66f8\u8fbc\u307f\u30d1\u30bf\u30fc\u30f3\u3092\u6700\u9069\u5316\u3057\u3001\u8aad\u8fbc\u307f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7684\u3092\u7d5e\u3063\u305f\u65b9\u6cd5\u3067\u5206\u914d\u3059\u308b\u3002\u3053\u3046\u3057\u3066\u3001\u30b9\u30d4\u30fc\u30c9\u3068\u8aad\u66f8\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u4fdd\u3063\u3066\u3044\u308b\u3002 <strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong>.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30e2\u30fc\u30c9<\/th>\n      <th>\u30b3\u30df\u30c3\u30c8\u884c\u52d5<\/th>\n      <th>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/th>\n      <th>RPO<\/th>\n      <th>\u4ee3\u8868\u7684\u306a\u4f7f\u7528\u4f8b<\/th>\n      <th>\u30b9\u30d7\u30ea\u30c3\u30c8\u30d6\u30ec\u30a4\u30f3\u306e\u30ea\u30b9\u30af<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>\u975e\u540c\u671f<\/td>\n      <td>\u3059\u3050\u306b\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u3092\u78ba\u8a8d<\/td>\n      <td>\u4f4e\u3044<\/td>\n      <td>\u3088\u308a\u9ad8\u3044<\/td>\n      <td>\u9ad8\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u3001\u30ec\u30dd\u30fc\u30c8\u30ea\u30fc\u30c9<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0\uff08\u30ac\u30a4\u30c0\u30f3\u30b9\u306a\u3057\u306e\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u7528\uff09<\/td>\n    <\/tr>\n    <tr>\n      <td>\u534a\u540c\u671f<\/td>\n      <td>\u5c11\u306a\u304f\u3068\u30821\u53f0\u306e\u30ec\u30d7\u30ea\u30ab\u3092\u78ba\u8a8d<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n      <td>\u3088\u308a\u4f4e\u3044<\/td>\n      <td>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fb\u30d0\u30c3\u30d5\u30a1\u3092\u5099\u3048\u305f\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u30fb\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3<\/td>\n      <td>\u3088\u308a\u4f4e\u3044\uff08\u3088\u308a\u826f\u3044\u6307\u5c0e\u304c\u53ef\u80fd\uff09<\/td>\n    <\/tr>\n    <tr>\n      <td>\u540c\u671f\/\u30af\u30e9\u30b9\u30bf<\/td>\n      <td>\u904e\u534a\u6570\u304c\u6c38\u4e45\u4fdd\u5b58<\/td>\n      <td>\u3088\u308a\u9ad8\u3044<\/td>\n      <td>\u975e\u5e38\u306b\u4f4e\u3044<\/td>\n      <td>\u5b9a\u8db3\u6570\u304c\u5fc5\u8981\u306a\u30af\u30e9\u30b9\u30bf<\/td>\n      <td>\u6700\u4f4e\uff08\u5b9a\u8db3\u6570\u306b\u554f\u984c\u306a\u3057\uff09<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u30d3\u30f3\u30ed\u30b0\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3001GTID\u3001\u885d\u7a81\u5b89\u5168\u6027<\/h2>\n\n<p>\u79c1\u306f\u4e00\u8cab\u3057\u3066\u3001\u6b21\u306e\u3053\u3068\u3092\u983c\u308a\u306b\u3057\u3066\u3044\u308b\u3002 <strong>GTIDs\u306b\u3064\u3044\u3066<\/strong> (<code>gtid_mode=ON<\/code>, <code>enforce_gtid_consistency=ON<\/code>\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u304c\u30dd\u30b8\u30b7\u30e7\u30f3\u30d1\u30ba\u30eb\u306a\u3057\u3067\u6a5f\u80fd\u3059\u308b\u3088\u3046\u306b\uff09\u3002\u79c1\u306f\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30c1\u30e3\u30f3\u30cd\u30eb\u3092 <code>auto_position=1<\/code>, \u5207\u308a\u66ff\u3048\u5f8c\u306b\u30ec\u30d7\u30ea\u30ab\u304c\u81ea\u52d5\u7684\u306b\u30bd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u3002\u30d3\u30f3\u30ed\u30b0\u306b\u306f <strong>\u884c\u30d9\u30fc\u30b9<\/strong> (<code>binlog_format=ROW\u3002<\/code>\u306a\u305c\u306a\u3089\u6c7a\u5b9a\u8ad6\u7684\u3067\u3042\u308a\u3001\u95a2\u6570\u3084\u975e\u6c7a\u5b9a\u8ad6\u3068\u306e\u885d\u7a81\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3089\u3060\u3002\u79c1\u306f\u6df7\u5408\/\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u9078\u629e\u7684\u306b\u3057\u304b\u4f7f\u308f\u306a\u3044\u3002.<\/p>\n<p>\u885d\u7a81\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b <code>sync_binlog=1<\/code> \u305d\u3057\u3066 <code>innodb_flush_log_at_trx_commit=1<\/code> RPO\u3092\u5b9f\u8cea\u7684\u306b\u30bc\u30ed\u306b\u3059\u308b\u5834\u5408\u3002\u3088\u308a\u9ad8\u3044\u30ec\u30a4\u30c6\u30f3\u30b7\u611f\u5ea6\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u59a5\u5354\u70b9\u3092\u9078\u3073\u307e\u3059\u304c\u3001\u305d\u308c\u3092\u660e\u78ba\u306b\u6587\u66f8\u5316\u3057\u307e\u3059\u3002\u30af\u30e9\u30c3\u30b7\u30e5\u6642\u306b\u30ec\u30d7\u30ea\u30ab\u304c\u304d\u308c\u3044\u306b\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3055\u308c\u308b\u3088\u3046\u306b\u3001\u79c1\u306f <code>\u30ea\u30ec\u30fc_\u30ed\u30b0_\u30ea\u30ab\u30d0\u30ea<\/code> \u305d\u3057\u3066\u53bb\u308b <code>\u30ed\u30b0_\u30ec\u30d7\u30ea\u30ab\u66f4\u65b0<\/code> (\u4ee5\u524d\u306f <code>\u30ed\u30b0_slave_updates<\/code>\u30ab\u30b9\u30b1\u30fc\u30c9\u304c\u5b89\u5b9a\u3059\u308b\u3088\u3046\u306b\uff09\u3002\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8 <strong>\u30d1\u30e9\u30ec\u30eb\u30fb\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong>: <code>\u30ec\u30d7\u30ea\u30ab\u4e26\u5217\u30ef\u30fc\u30ab\u30fc<\/code> (\u4f8b\uff1a8-32\uff09\u30d7\u30e9\u30b9 <code>binlog_transaction_dependency_tracking<\/code>=WRITESET \u306f\u3001\u884c\u9055\u53cd\u306e\u306a\u3044\u3088\u3046\u306b\u914d\u7f6e\u3092\u6700\u9069\u5316\u3059\u308b\u3002.<\/p>\n\n<h2>\u30b9\u30d7\u30ea\u30c3\u30c8\u30d6\u30ec\u30a4\u30f3\uff1a\u539f\u56e0\u3068\u75c7\u72b6<\/h2>\n\n<p>\u30b9\u30d7\u30ea\u30c3\u30c8\u30fb\u30d6\u30ec\u30a4\u30f3\u306f\u3001\u5316\u5408\u7269\u304c\u5206\u88c2\u3057\u3001\u3044\u304f\u3064\u304b\u306e\u90e8\u5206\u306b\u5206\u304b\u308c\u308b\u3053\u3068\u3067\u767a\u751f\u3059\u308b\u3002 <strong>\u540c\u6642\u306b<\/strong> \u3092\u66f8\u304f\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30fb\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3084\u30a4\u30f3\u30bf\u30fc\u30b3\u30cd\u30af\u30c8\u306e\u6b20\u9665\u304c\u554f\u984c\u306e\u5f15\u304d\u91d1\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u8aa4\u3063\u305f\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u30fb\u30b9\u30af\u30ea\u30d7\u30c8\u3084\u4e0d\u660e\u78ba\u306a\u30af\u30a9\u30fc\u30e9\u30e0\u30eb\u30fc\u30eb\u304c\u72b6\u6cc1\u3092\u60aa\u5316\u3055\u305b\u308b\u3002\u305d\u3057\u3066\u3001\u4e92\u3044\u306b\u898b\u3048\u306a\u30442\u3064\u306e\u66f8\u304d\u8fbc\u307f\u306e\u771f\u5b9f\u304c\u3042\u308b\u3002\u30aa\u30fc\u30c8\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u885d\u7a81\u3001\u77db\u76fe\u3057\u305f\u66f4\u65b0\u3001\u524a\u9664\u306e\u30ed\u30b9\u30c8\u304c\u76f4\u63a5\u306e\u539f\u56e0\u3068\u306a\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u304c\u9577\u304f\u7d9a\u3051\u3070\u7d9a\u304f\u307b\u3069\u3001\u305d\u306e\u5f8c\u306b\u7d9a\u304f <strong>\u30de\u30fc\u30b8<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/mysql-database-replication-4573.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>MySQL\u56fa\u6709\u306e\u30ea\u30b9\u30af\u30b7\u30ca\u30ea\u30aa<\/h2>\n\n<p>\u79c1\u306f\u3001\u30de\u30b9\u30bf\u30fc\u3068\u30de\u30b9\u30bf\u30fc\u306e\u975e\u540c\u671f\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306b\u6700\u5927\u306e\u5371\u967a\u6027\u3092\u611f\u3058\u3066\u3044\u308b\u3002 <strong>\u30ac\u30a4\u30c0\u30f3\u30b9<\/strong>. .\u53cc\u65b9\u304c\u66f8\u304d\u8fbc\u307f\u53ef\u80fd\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3061\u3089\u3064\u304f\u5834\u5408\u3001\u30c4\u30fc\u30eb\u306f\u7c21\u5358\u306b\u53cc\u65b9\u3092\u30d7\u30e9\u30a4\u30de\u30ea\u306b\u6607\u683c\u3055\u305b\u308b\u3002\u30aa\u30d5\u30bb\u30c3\u30c8\u306e\u81ea\u52d5\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u304c\u306a\u3051\u308c\u3070\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30fb\u30ad\u30fc\u306f\u3059\u3050\u306b\u885d\u7a81\u3059\u308b\u3002VIP\u3084DNS\u30b9\u30a4\u30c3\u30c1\u30ed\u30b8\u30c3\u30af\u304c\u306a\u3044\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f2\u3064\u306e\u30ce\u30fc\u30c9\u306b\u4e26\u884c\u3057\u3066\u66f8\u304d\u8fbc\u3080\u3002\u30af\u30a9\u30fc\u30e9\u30e0\u306b\u6b20\u9665\u306e\u3042\u308b\u30af\u30e9\u30b9\u30bf\u3067\u3082\u3001\u53cc\u65b9\u304c\u66f8\u304d\u8fbc\u307f\u3092\u7d9a\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u30b3\u30f3\u30b9\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30c1\u30fc\u30e0\u304c\u65b9\u5411\u6027\u3092\u5b9a\u3081\u308b\u3088\u308a\u3082\u65e9\u304f\u4e00\u8cab\u6027\u3092\u5d29\u3057\u3066\u3057\u307e\u3046\u3002 <strong>\u30e9\u30f3\u30d6\u30c3\u30af\u30b9<\/strong> \u6e96\u5099\u306f\u3067\u304d\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>\u4e00\u8cab\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u6226\u7565<\/h2>\n\n<p>\u79c1\u306f\u30b9\u30da\u30eb\u306e\u30eb\u30fc\u30eb\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u3002 <strong>\u8aad\u307f\u53d6\u308a\u5c02\u7528<\/strong>. .\u5207\u308a\u66ff\u3048\u306b\u306fVIP\u3092\u4f7f\u3046\u304b\u3001DNS\u306eTTL\u3092\u77ed\u304f\u3057\u3066\u3001\u66f8\u304d\u8fbc\u307f\u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30ce\u30fc\u30c9\u306b\u3057\u304b\u884c\u304b\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3002\u30de\u30eb\u30c1\u30de\u30b9\u30bf\u30fc\u306e\u8a2d\u8a08\u3067\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3001\u30ea\u30fc\u30b8\u30e7\u30f3\u3001\u30ad\u30fc\u30b9\u30da\u30fc\u30b9\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u30eb\u30fc\u30e0\u3092\u533a\u5207\u3063\u3066\u3044\u308b\u3002\u307e\u305f\u3001\u81ea\u52d5\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u3001idempotence\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u30fb\u30d5\u30a3\u30fc\u30eb\u30c9\u3082\u4f7f\u7528\u3057\u3066\u3044\u308b\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067\u306f\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u30fb\u30b9\u30c6\u30a3\u30c3\u30ad\u30cd\u30b9\u3084\u30bf\u30fc\u30b2\u30c3\u30c8\u30fb\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30fb\u30ea\u30fc\u30c9\u3067\u30ea\u30fc\u30c9\u30fb\u30a2\u30d5\u30bf\u30fc\u30fb\u30e9\u30a4\u30c8\u3092\u7dad\u6301\u3059\u308b\u3002\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306f\u30e9\u30b0\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3001\u5065\u5168\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30a2\u30e9\u30fc\u30e0\u306f\u65e9\u671f\u8b66\u544a\u3092\u63d0\u4f9b\u3059\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u79c1\u306f\u3044\u304f\u3064\u304b\u306e <strong>\u30ec\u30d9\u30eb<\/strong> \u540c\u6642\u306b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/MySQL_Cluster_Consistency_4186.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ea\u30fc\u30c9\u30fb\u30a2\u30d5\u30bf\u30fc\u30fb\u30e9\u30a4\u30c8\u306e\u5b9f\u969b<\/h2>\n\n<p>\u66f8\u304d\u8fbc\u307f\u30bb\u30c3\u30b7\u30e7\u30f3\u3092 <strong>\u30d7\u30e9\u30a4\u30de\u30ea\u30fc<\/strong> \u30d4\u30f3\u3002\u3042\u308b\u3044\u306f\u3001\u30ec\u30d7\u30ea\u30ab\u304c <code>gtid_executed<\/code> \u306f\u30e6\u30fc\u30b6\u30fc\u306e\u66f8\u304d\u8fbc\u307f\u3092\u542b\u3080\u3002\u5b9f\u969b\u306b\u306f\u3001\u30c8\u30fc\u30af\u30f3\uff08\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306eGTID\u306a\u3069\uff09\u3092\u4f7f\u3063\u3066\u3001\u30ea\u30fc\u30c9\u30d1\u30b9\u304c\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\u78ba\u8a8d\u304c\u53d6\u308c\u306a\u3044\u5834\u5408\u3001\u8aad\u307f\u8fbc\u307f\u306f\u76f4\u63a5\u30d7\u30e9\u30a4\u30de\u30ea\u306b\u884c\u304f\u304b\u3001\u30ec\u30d7\u30ea\u30ab\u304c\u8ffd\u3044\u3064\u304f\u307e\u3067\u3057\u3070\u3089\u304f\u5f85\u3064\u3002API\u306e\u5834\u5408\u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306b\u201e<em>\u8981\u30ea\u30fc\u30c9\u30fb\u30a2\u30d5\u30bf\u30fc\u30fb\u30e9\u30a4\u30c8<\/em>\u201c\u306e\u30d2\u30f3\u30c8\u3092\u4e0e\u3048\u308b\u3053\u3068\u3067\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u304c\u610f\u8b58\u7684\u306b\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3002 <strong>\u30d5\u30ec\u30c3\u30b7\u30e5<\/strong> \u30c7\u30fc\u30bf\u3092\u5f37\u8981\u3059\u308b\u304b\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b\u30ea\u30fc\u30c9\u3067\u751f\u304d\u308b\u304b\u3002.<\/p>\n\n<h2>\u30e9\u30b0\u7ba1\u7406\u3068\u30af\u30a8\u30ea\u8a2d\u8a08<\/h2>\n\n<p>\u79c1\u306f\u3001\u4e3b\u306b\u6b21\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u30e9\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u3002 <strong>\u30af\u30a8\u30ea\u30fc\u306e\u898f\u5f8b<\/strong> from\uff1a\u9577\u3044SELECT\u306b\u306f\u6642\u9593\u5236\u9650\u3068\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4e0e\u3048\u3001\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306f\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3084\u4ee3\u66ff\u30ad\u30fc\u3092\u4f7f\u3063\u3066\u5206\u89e3\u3059\u308b\u3002\u30d3\u30f3\u30ed\u30b0\u3092\u6ea2\u308c\u3055\u305b\u306a\u3044\u3088\u3046\u306b\u3001\u5927\u304d\u306a\u66f4\u65b0\u3084\u524a\u9664\u306f\u4e00\u6642\u505c\u6b62\u3092\u631f\u3093\u3067\u30d0\u30c3\u30c1\u3067\u5b9f\u884c\u3059\u308b\u3002\u518d\u69cb\u7bc9\uff08ALTER TABLE\u306a\u3069\uff09\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u30d9\u30fc\u30b9\u3067\u3001\u53ef\u80fd\u3067\u3042\u308c\u3070\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u306a\u3044\u3088\u3046\u306b\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ec\u30d9\u30eb\u3067\u306f\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3092\u4f7f\u3063\u3066\u4e26\u5217\u66f8\u304d\u8fbc\u307f\u30d0\u30fc\u30b9\u30c8\u3092\u5236\u9650\u3057\u3001\u30ad\u30e5\u30fc\u3092\u4f7f\u3063\u3066\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u3092\u5e73\u6e96\u5316\u3059\u308b\u3002\u5c0f\u3055\u306a\u30cf\u30fc\u30c8\u30d3\u30fc\u30c8\u30fb\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3048\u3070\u3001\u79d2\u5358\u4f4d\u306e\u9045\u5ef6\u3092\u8a08\u6e2c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <strong>\u30a2\u30e9\u30fc\u30c8\u5236\u9650<\/strong> \u73fe\u5b9f\u7684\u306b\u3002.<\/p>\n\n<h2>\u30af\u30a9\u30fc\u30e9\u30e0\u3001\u30a4\u30f3\u30bf\u30fc\u30b3\u30cd\u30af\u30c8\u3001\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc<\/h2>\n\n<p>\u79c1\u306f\u3001\u30af\u30a9\u30fc\u30e9\u30e0\u3092\u8a2d\u8a08\u3057\u3066\u3044\u308b\u3002 <strong>\u904e\u534a\u6570<\/strong> \u3068\u66f8\u3044\u3066\u3082\u3088\u3044\u3002\u7b2c3\u306e\u5834\u6240\u307e\u305f\u306f\u30af\u30a9\u30fc\u30e9\u30e0\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u53cc\u65b9\u5411\u306e\u5206\u5272\u3092\u304d\u308c\u3044\u306b\u89e3\u6c7a\u3059\u308b\u3002\u5197\u9577\u5316\u3055\u308c\u305f\u76f8\u4e92\u63a5\u7d9a\u306f\u3001\u5b64\u5cf6\u306e\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3059\u3002\u3059\u3079\u3066\u306e\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u306e\u524d\u306b\u3001\u79c1\u306f\u524d\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u304c\u672c\u5f53\u306b\u306a\u304f\u306a\u3063\u305f\u306e\u304b\u3001\u3042\u308b\u3044\u306f\u660e\u3089\u304b\u306b\u5207\u308a\u96e2\u3055\u308c\u305f\u306e\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30c4\u30fc\u30eb\u306f\u3001\u660e\u78ba\u306a\u30ed\u30c3\u30af\u3068\u30c1\u30a7\u30c3\u30af\u306b\u3088\u3063\u3066\u306e\u307f\u4fc3\u9032\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u30ec\u30d7\u30ea\u30ab\u306f\u3001read_only=ON\u3068super_read_only=ON\u3067\u3001\u5076\u767a\u7684\u306a\u66f8\u304d\u8fbc\u307f\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u308b\u3002 <strong>\u30ea\u30ea\u30fc\u30b9<\/strong>.<\/p>\n\n<h2>\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u30d5\u30a7\u30f3\u30b7\u30f3\u30b0\u3001\u30bb\u30ad\u30e5\u30a2\u30d7\u30ed\u30e2\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n<p>\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u3042\u304f\u307e\u3067\u3082 <strong>\u30b2\u30fc\u30c8\u30ad\u30fc\u30d1\u30fc<\/strong>\u6607\u683c\u306f\u3001\u65e7\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u304c\u7a4d\u6975\u7684\u306b\u30d5\u30a7\u30f3\u30b7\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306e\u307f\u8a31\u53ef\u3055\u308c\u308b\uff08\u4f8b\uff1aVIP\u306f\u8131\u9000\uff09\u3001, <code>super_read_only=\u30aa\u30f3<\/code>, \u30ec\u30d7\u30ea\u30ab\u306e\u72b6\u614b\u306f\u4e00\u8cab\u3057\u3066\u3044\u308b\uff09\u3002\u79c1\u306e\u30eb\u30fc\u30eb\u306f\u4ee5\u4e0b\u306e\u901a\u308a\uff1a<\/p>\n<ul>\n  <li>\u591a\u6570\u6c7a\u306b\u3088\u308b\u660e\u78ba\u306a\u30ea\u30fc\u30c0\u30fc\u9078\u51fa\u3068\u201e<em>\u30ce\u30fc\u30fb\u30c7\u30e5\u30a2\u30eb\u30fb\u30d7\u30e9\u30a4\u30de\u30ea\u30fc<\/em>\u201c\u300c\u30ed\u30c3\u30af<\/li>\n  <li>\u4ee5\u4e0b\u306e\u5834\u5408\u306e\u307f\u6607\u683c <code>\u30b5\u30fc\u30d0\u30fcID<\/code> \u66d6\u6627\u3055\u304c\u306a\u3044\u3001, <code>\u8aad\u307f\u53d6\u308a\u5c02\u7528<\/code> \u30bb\u30c3\u30c8\u3068\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30c1\u30e3\u30f3\u30cd\u30eb\u306f\u30af\u30ea\u30fc\u30f3<\/li>\n  <li>DNS\/VIP\u306e\u5207\u308a\u66ff\u3048\u306f\u3001\u5065\u5168\u6027\u3068\u30e9\u30b0\u3092\u30c1\u30a7\u30c3\u30af\u3057\u305f\u5f8c\u306b\u306e\u307f\u884c\u3046\u3002<\/li>\n  <li>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u30d1\u30b9\uff1a\u7591\u554f\u304c\u3042\u308b\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u6b21\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3092\u597d\u307f\u307e\u3059\u3002 <strong>\u77ed\u3044\u8aad\u307f\u53d6\u308a\u5c02\u7528<\/strong>, \u30ea\u30b9\u30ad\u30fc\u306a\u3053\u3068\u3092\u66f8\u304f\u4ee3\u308f\u308a\u306b<\/li>\n<\/ul>\n<p>\u91cd\u8981\u3060\uff1a <code>\u8aad\u307f\u53d6\u308a\u5c02\u7528<\/code> \u306fSUPER\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u66f8\u304d\u8fbc\u307f\u3092\u4fdd\u8b77\u3057\u306a\u3044\u3002 <code>\u30b9\u30fc\u30d1\u30fc\u30fb\u30ea\u30fc\u30c9\u30fb\u30aa\u30f3\u30ea\u30fc<\/code>. .\u307e\u305f\u3001\u7ba1\u7406\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u3082\u9694\u96e2\u3057\u3001\u30b9\u30c8\u30ec\u30b9\u304c\u304b\u304b\u3063\u305f\u3068\u304d\u306b\u30ec\u30d7\u30ea\u30ab\u306b \u201e\u3046\u3063\u304b\u308a 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<strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/mysql_cluster_szenario_4523.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30c7\u30fc\u30bf\u30c6\u30fc\u30d6\u30eb\u306e\u6bd4\u8f03\u3068\u30d2\u30fc\u30eb<\/h2>\n\n<p>\u6bd4\u8f03\u306b\u306f\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3001\u305d\u3057\u3066 <strong>\u30d0\u30fc\u30b8\u30e7\u30f3\u30d5\u30a3\u30fc\u30eb\u30c9<\/strong>, 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<strong>\u51fa\u767a\u70b9<\/strong> \u3092\u6301\u3064\u3002<\/p>\n\n<h2>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001PITR\u3001\u518d\u64ad\u7a2e<\/h2>\n\n<p>\u79c1\u306f\u5b8c\u5168\u306a\u3082\u306e\u3092\u7d44\u307f\u5408\u308f\u305b\u308b <strong>\u7269\u7406\u7684<\/strong> 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<strong>\u4e00\u8cab\u6027<\/strong> (InnoDB\u30d5\u30e9\u30c3\u30b7\u30e5\u3001\u6b63\u3057\u3044binlog\u30b9\u30bf\u30fc\u30c8\u30a6\u30a3\u30f3\u30c9\u30a6)\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u30ea\u30b9\u30c8\u30a2\u3068\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u6a5f\u80fd\u3057\u307e\u305b\u3093\u3002.<\/p>\n\n<h2>\u30c6\u30b9\u30c8\u3001\u30c9\u30ea\u30eb\u3001SLO<\/h2>\n\n<p>\u660e\u78ba\u306a\u5b9a\u7fa9 <strong>SLO<\/strong> 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<strong>\u4fe1\u983c\u3067\u304d\u308b<\/strong>.<\/p>\n\n<h2>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\uff1a\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u30ea\u30fc\u30b8\u30e7\u30f3\u3001\u30aa\u30fc\u30ca\u30fc\u30b7\u30c3\u30d7<\/h2>\n\n<p>\u79c1\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3001\u5730\u57df\u3001\u307e\u305f\u306f\u5730\u57df\u3054\u3068\u306b\u57f7\u7b46\u306e\u8cac\u4efb\u3092\u5206\u3051\u3066\u3044\u308b\u3002 <strong>\u30c9\u30e1\u30a4\u30f3<\/strong>, 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