renshen
af8f1403fb
修复运费对账汇总卡死与订单店铺候选查询过慢
- 运费对账全量汇总:哈希关联的 join buffer 从 16MB 提到 128MB(空间上限 384MB)。
300 万行明细 × 400 万行最新关联表在 16MB 下会退化成磁盘多趟扫描,实测超过
max_statement_time(300s) 也跑不完,页面「记录数/运费合计」永远停在计算中;
调整后约 110 秒出结果并写入缓存。
- 订单售后费用明细店铺候选:改回两个来源各自 DISTINCT 后在 PHP 合并(UNION 会
把两个上百万行结果一起物化去重排序)。同时完整候选只算一次并缓存 24 小时,
冷缓存时先返回毫秒级的店铺目录,完整列表放到响应结束后补齐,避免页面为了
下拉候选把工作进程占住两分钟。
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