Unverified50% confidenceFactExact time
Postgres's shared_buffers is a memory pool used to cache data pages, and its default value is typically only 128MB.
1
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50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
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Related Claims
UnverifiedThe official Postgres documentation has long recommended setting shared_buffers to approximately 25% of system memory.75% similarUnverifiedDouble buffering refers to the same data page existing simultaneously in both the OS page cache and shared buffers, resulting in duplicated memory usage and dilution of effective cache capacity.71% similarUnverifiedPostgreSQL 每个连接通常需要消耗数 MB 的内存69% similarUnverified处理超大文件时通常将文件切分为16KB～64KB的数据块逐块发送，并监听bufferedAmount事件进行流量控制避免内存溢出68% similar
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