MySQL分库分表数据写入示例：Hash取模算法实现

#!/bin/bash\n\n# \u5B9A\u4E49\u5206\u5E93\u5206\u8868\u7684\u603B\u6570\ntotal_db=6\ntotal_table=2048\n\n# \u83B7\u53D6\u8F93\u5165\u7684\u6570\u636E\nread -p "\u8BF7\u8F93\u5165\u9700\u8981\u5199\u5165\u7684\u6570\u636E: " data\n\n# \u8BA1\u7B97\u6838\u503C\nhash_value=$(echo -n "$data" | md5sum | awk '{print $1}')\nhash_mod=$((16#$hash_value % $total_db))\ndb_index=$(printf "%02d" $hash_mod)\n\nhash_mod=$((16#$hash_value % $total_table))\ntable_index=$(printf "%04d" $hash_mod)\n\n# \u6253\u5370\u7ED3\u679C\necho "\u6570\u636E $data \u7684\u6838\u503C\u4E3A $hash_value"\necho "\u5E94\u8BE5\u5199\u5165\u5230\u5E93$db_index \u7684\u8868$table_index"\n