【分庫分表】sharding-jdbc—分片策略
阿新 • • 發佈：2019-01-03
==> Preparing: select id,order_id,unique_no,quantity,is_active,inserttime,updatetime from t_order_items where is_active = 1 AND order_id in ( ? , ? , ? ) ==> Parameters: 100(Long), 101(Long), 102(Long) //第一輪route篩選資料庫（分片鍵路由規則）： 09:55:09.634 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["db0","db1","db2"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":100}09:55:13.758 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:db1 09:55:17.767 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["db0","db1","db2"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":101}09:55:21.361 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:db2 09:55:23.127 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["db0","db1","db2"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":102}09:55:24.190 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:db0 //第二輪route按第一輪篩選到的db，逐個進行table的計算： 09:58:45.086 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":100} 09:58:46.725 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0 09:58:58.647 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":101} 09:59:02.197 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_1 09:59:11.710 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":102} 09:59:12.604 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0 10:00:01.538 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":100} 10:00:01.538 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0 10:00:02.042 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":101} 10:00:02.042 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_1 10:00:02.442 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":102} 10:00:02.442 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0 10:00:03.581 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":100} 10:00:03.581 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0 10:00:03.946 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":101} 10:00:03.946 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_1 10:00:04.578 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - collection:["t_order_items_0","t_order_items_1"],preciseShardingValue:{"columnName":"order_id","logicTableName":"t_order_items","value":102} 10:00:04.578 logback-demo [http-nio-8082-exec-1] INFO s.j.d.d.MyPreciseShardingAlgorithm - return name:t_order_items_0