In the previous article we covered how the PostgreSQL planner reads pg_class and pg_statistic to estimate row counts, choose join strategies, and decide whether an index scan is worth it. The message was clear: when statistics are wrong, everything else goes with it.
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Материалы по теме:。关于这个话题，谷歌提供了深入分析
It is AWS’ stance that all buckets should use this namespace pattern, unless you have a compelling reason not to (hint: there aren’t many). To this end, AWS is allowing security administrators to set policies that require the use of this namespace through the use of a new condition key s3:x-amz-bucket-namespace, which can be applied within an Organization’s SCP policies to enforce the use of this protection across an organization.