能够阅读PG开发者邮件列表，表明你的PG能力达到专家级水平了。在源代码中有很多隐含的知识，并不为人所知。只有仔细研读过某一部分代码的开发者才能深入理解。我在阅读开发者邮件列表的过程中，记录一些对我理解PG的设计有很大帮助的邮件列表。仔细阅读这些邮件列表会帮助我更加深入理解源代码。

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Timeline switching with partial WAL records can break replica recovery

https://www.postgresql.org/message-id/CAGWv16KJg%3DSHKxwTWxGFo9zibmEompk%3DbfK0MRHTEh8NipoyHQ%40mail.gmail.com

 

Fix pg_waldump to exit cleanly at end of WAL

https://www.postgresql.org/message-id/CAEoWx2mkEG-%3DrQtSJ7LnPh8A_%3DtJ8%3DzFvQB30KhrXh41mzkokQ%40mail.gmail.com

 

Per backend relation statistics tracking

https://www.postgresql.org/message-id/aJrxug4LCg4Hm5Mm%40ip-10-97-1-34.eu-west-3.compute.internal

 

Changing the state of data checksums in a running cluster

https://www.postgresql.org/message-id/E07A611B-9CF3-4FDB-8CE8-A221E39040EC%40yesql.se

 

Improve LWLock tranche name visibility across backends

https://www.postgresql.org/message-id/CAA5RZ0vvED3naph8My8Szv6DL4AxOVK3eTPS0qXsaKi%3DbVdW2A%40mail.gmail.com