feat(db): V15 为高频表添加 RANGE 月分区
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-- Phase 1.5: 为高频表添加 MySQL RANGE 月分区（分区键 create_time）
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-- 架构设计文档：docs/architecture/2026-07-06-message-customer-interaction-design.md 第 2.6.2 节
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-- ============================
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-- 1. mci_message_event（消息事件表）
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-- ============================
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-- 调整主键/唯一键，确保包含分区键 create_time
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ALTER TABLE mci_message_event
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DROP PRIMARY KEY,
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ADD PRIMARY KEY (id, create_time),
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DROP INDEX uk_event_id,
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ADD UNIQUE KEY uk_event_id (event_id, create_time);
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-- 改为 RANGE COLUMNS 月分区，并预创建 2026-07 至 2026-12 分区
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ALTER TABLE mci_message_event
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PARTITION BY RANGE COLUMNS(create_time) (
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PARTITION p202607 VALUES LESS THAN ('2026-08-01'),
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PARTITION p202608 VALUES LESS THAN ('2026-09-01'),
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PARTITION p202609 VALUES LESS THAN ('2026-10-01'),
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PARTITION p202610 VALUES LESS THAN ('2026-11-01'),
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PARTITION p202611 VALUES LESS THAN ('2026-12-01'),
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PARTITION p202612 VALUES LESS THAN ('2027-01-01'),
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PARTITION pfuture VALUES LESS THAN MAXVALUE
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);
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-- ============================
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-- 2. mci_send_record（发送记录表）
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-- ============================
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ALTER TABLE mci_send_record
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DROP PRIMARY KEY,
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ADD PRIMARY KEY (id, create_time),
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DROP INDEX uk_task_target,
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ADD UNIQUE KEY uk_task_target (task_id, conversation_id, person_id, create_time);
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ALTER TABLE mci_send_record
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PARTITION BY RANGE COLUMNS(create_time) (
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PARTITION p202607 VALUES LESS THAN ('2026-08-01'),
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PARTITION p202608 VALUES LESS THAN ('2026-09-01'),
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PARTITION p202609 VALUES LESS THAN ('2026-10-01'),
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PARTITION p202610 VALUES LESS THAN ('2026-11-01'),
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PARTITION p202611 VALUES LESS THAN ('2026-12-01'),
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PARTITION p202612 VALUES LESS THAN ('2027-01-01'),
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PARTITION pfuture VALUES LESS THAN MAXVALUE
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);
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-- ============================
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-- 3. mci_conversation（会话表，可选但推荐）
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-- ============================
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-- MySQL 不支持外键与分区共存，因此需要先删除与会话表相关的外键约束。
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-- 这些外键属于数据库级完整性约束，应用层（MyBatis-Plus）不依赖它们。
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ALTER TABLE mci_conversation_participant
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DROP FOREIGN KEY fk_participant_conversation_id;
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ALTER TABLE mci_channel_account_conversation
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DROP FOREIGN KEY fk_binding_conversation_id;
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ALTER TABLE mci_conversation_tag_binding
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DROP FOREIGN KEY fk_conv_tag_conversation_id;
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ALTER TABLE mci_conversation
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DROP FOREIGN KEY fk_conversation_owner_account;
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ALTER TABLE mci_conversation
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DROP FOREIGN KEY fk_conversation_subject_id;
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-- 调整主键/唯一键，确保包含分区键 create_time
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ALTER TABLE mci_conversation
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DROP PRIMARY KEY,
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ADD PRIMARY KEY (id, create_time),
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DROP INDEX uk_tenant_channel_conv,
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ADD UNIQUE KEY uk_tenant_channel_conv (tenant_code, channel_type, channel_conversation_id, deleted, create_time);
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ALTER TABLE mci_conversation
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PARTITION BY RANGE COLUMNS(create_time) (
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PARTITION p202607 VALUES LESS THAN ('2026-08-01'),
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PARTITION p202608 VALUES LESS THAN ('2026-09-01'),
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PARTITION p202609 VALUES LESS THAN ('2026-10-01'),
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PARTITION p202610 VALUES LESS THAN ('2026-11-01'),
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PARTITION p202611 VALUES LESS THAN ('2026-12-01'),
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PARTITION p202612 VALUES LESS THAN ('2027-01-01'),
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PARTITION pfuture VALUES LESS THAN MAXVALUE
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);
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-- ============================
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-- 4. 创建定期扩展未来分区的存储过程
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-- ============================
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DELIMITER $$
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CREATE PROCEDURE ExtendMonthlyPartitions(
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IN p_table_name VARCHAR(64),
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IN p_months_ahead INT
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)
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BEGIN
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DECLARE v_current DATE;
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DECLARE v_target DATE;
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DECLARE v_partition_name VARCHAR(16);
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DECLARE v_less_than VARCHAR(12);
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DECLARE v_max_partition VARCHAR(64);
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DECLARE v_sql VARCHAR(2000);
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-- 从下个月开始补充分区
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SET v_current = DATE_FORMAT(CURDATE() + INTERVAL 1 MONTH, '%Y-%m-01');
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SET v_target = DATE_FORMAT(CURDATE() + INTERVAL p_months_ahead MONTH, '%Y-%m-01');
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-- 找到当前 MAXVALUE 分区名（通常为 pfuture）
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SELECT PARTITION_NAME INTO v_max_partition
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FROM information_schema.PARTITIONS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = p_table_name
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AND PARTITION_DESCRIPTION = 'MAXVALUE';
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IF v_max_partition IS NULL THEN
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SIGNAL SQLSTATE '45000'
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SET MESSAGE_TEXT = 'No MAXVALUE partition found; table may not be range-partitioned';
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END IF;
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WHILE v_current <= v_target DO
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SET v_partition_name = CONCAT('p', DATE_FORMAT(v_current, '%Y%m'));
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SET v_less_than = DATE_FORMAT(v_current + INTERVAL 1 MONTH, '%Y-%m-%d');
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-- 仅当分区不存在时才添加，保证幂等
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.PARTITIONS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = p_table_name
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AND PARTITION_NAME = v_partition_name
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) THEN
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SET v_sql = CONCAT(
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'ALTER TABLE ', p_table_name,
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' REORGANIZE PARTITION ', v_max_partition,
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' INTO (PARTITION ', v_partition_name, ' VALUES LESS THAN (''', v_less_than, '''), ',
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'PARTITION ', v_max_partition, ' VALUES LESS THAN MAXVALUE)'
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);
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SET @sql = v_sql;
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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END IF;
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SET v_current = v_current + INTERVAL 1 MONTH;
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END WHILE;
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END$$
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DELIMITER ;
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36
scripts/extend-mysql-partitions.sh
Executable file
36
scripts/extend-mysql-partitions.sh
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#!/usr/bin/env bash
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#
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# 扩展 MySQL RANGE 月分区
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# 为 mci_message_event / mci_send_record / mci_conversation 自动添加未来月份分区。
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# 依赖 V15__add_range_partitions.sql 中创建的存储过程 ExtendMonthlyPartitions。
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#
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# 用法示例：
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# ./scripts/extend-mysql-partitions.sh
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# MYSQL_HOST=127.0.0.1 MYSQL_PORT=3306 MYSQL_USER=root MYSQL_PASSWORD=root MYSQL_DB=sino_mci ./scripts/extend-mysql-partitions.sh
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#
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set -euo pipefail
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MYSQL_HOST="${MYSQL_HOST:-mci-mysql}"
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MYSQL_PORT="${MYSQL_PORT:-3306}"
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MYSQL_USER="${MYSQL_USER:-root}"
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MYSQL_PASSWORD="${MYSQL_PASSWORD:-root}"
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MYSQL_DB="${MYSQL_DB:-sino_mci}"
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MONTHS_AHEAD="${MONTHS_AHEAD:-3}"
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TABLES=(
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mci_message_event
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mci_send_record
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mci_conversation
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)
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echo "Extending monthly partitions for database: ${MYSQL_DB}"
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echo "Host: ${MYSQL_HOST}:${MYSQL_PORT}, User: ${MYSQL_USER}, Months ahead: ${MONTHS_AHEAD}"
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for table in "${TABLES[@]}"; do
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echo " -> ${table}"
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mysql -h "${MYSQL_HOST}" -P "${MYSQL_PORT}" -u "${MYSQL_USER}" -p"${MYSQL_PASSWORD}" "${MYSQL_DB}" \
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-e "CALL ExtendMonthlyPartitions('${table}', ${MONTHS_AHEAD});"
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done
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echo "Done."
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