优化

audit-service/src/main/resources/db/reliable-audit-migration.sql

@@ -22,17 +22,17 @@ CALL add_audit_event_id();
 DROP PROCEDURE IF EXISTS add_audit_event_id;
 
 CREATE TABLE IF NOT EXISTS sys_audit_dead_letter (
-  id BIGINT NOT NULL AUTO_INCREMENT,
+  id BIGINT NOT NULL AUTO_INCREMENT COMMENT '死信记录自增ID',
   event_id VARCHAR(64) NOT NULL COMMENT '审计事件全局唯一ID',
   payload_text LONGTEXT NOT NULL COMMENT 'RocketMQ死信原始载荷',
-  status VARCHAR(16) NOT NULL DEFAULT 'PENDING' COMMENT 'PENDING、PROCESSING、PROCESSED、DEAD',
-  retry_count INT NOT NULL DEFAULT 0,
-  next_retry_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
-  lease_owner VARCHAR(128) NULL,
-  lease_until DATETIME(3) NULL,
-  last_error VARCHAR(1000) NULL,
-  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
-  processed_at DATETIME(3) NULL,
+  status VARCHAR(16) NOT NULL DEFAULT 'PENDING' COMMENT '状态：PENDING待补偿、PROCESSING处理中、PROCESSED已处理、DEAD永久失败',
+  retry_count INT NOT NULL DEFAULT 0 COMMENT '死信重试次数',
+  next_retry_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '下次允许补偿时间',
+  lease_owner VARCHAR(128) NULL COMMENT '当前补偿租约持有实例',
+  lease_until DATETIME(3) NULL COMMENT '当前补偿租约截止时间',
+  last_error VARCHAR(1000) NULL COMMENT '最近一次补偿错误',
+  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '死信记录创建时间',
+  processed_at DATETIME(3) NULL COMMENT '补偿处理完成时间',
   PRIMARY KEY (id),
   UNIQUE KEY uk_audit_dead_event (event_id),
   KEY idx_audit_dead_retry (status, next_retry_at, lease_until)