目录一、痛点与难点分析1.1 核心业务场景1.2 技术挑战二、方案对比与实现方案一：数据库轮询（定时扫描）方案二：JDK 延迟队列（DelayQueue）方案三：Redis 过期键监听方案四：RabbitMQ 延迟队列方案五：基于时间轮算
Hi can someone help开发者_高级运维 me convert this tsql statement into c# linq2sql? select [series] from table group by [series] order by max([date]) desc
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