Parallel sequential scans,joins and aggregates
Support for consistent,read-scaling clusters through multiple synchronous standbys and "remote_apply" synchronous commit.
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postgres_fdw can now execute sorts,joins,UPDATEs and DELETEs on the remote server
Decreased autovacuum impact on big tables by avoiding "refreezing" old data.

• 并行连续扫面，连接和聚合
• 全文搜索支持短语
• 减少autovacuum对大表的冲击避免冻结旧数据。
• 通过多个同步的备用服务器和“remote_apply”同步提交技术支持数据一致的，读操作可伸缩的集群