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🛠️ 技术栈 后端核心 SpringBoot、SpringCloud Alibaba / SpringCloud MyBatis、MySQL(SQL 优化、事务、分库分表思想) Redis(热点缓存、分布式计数、限流) Redisson(分布式锁、可重入锁、公平锁) RabbitMQ ...
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WHEN c.income_monthly < 10000 THEN 'A) < 10k' WHEN c.income_monthly BETWEEN 10000 AND 20000 THEN 'B) 10k - 20k' WHEN c.income_monthly BETWEEN 20000 AND 40000 THEN 'C) 20k - 40k' ...