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    <title>PostgreSQL JSONB 高效查询实战：GIN 索引与性能优化</title>
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    <author>Simon</author>
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    <description><![CDATA[为什么 JSONB 值得关注 在现代后端开发中，半结构化数据无处不在——用户配置、API 日志、商品属性、设备遥测数据。传统做法是用 MySQL 的 TEXT 字段存 JSON 字符串，查]]></description>
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