Important lag in replication streaming between master and standby

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To: pgsql-admin@xxxxxxxxxxxxxx
Subject: Important lag in replication streaming between master and standby
From: Mai Peng <maily.peng@xxxxxxxxxxxxxxxxx>
Date: Mon, 26 Aug 2019 17:21:17 +0200

Hello,

I’ve got several times this error : "requested WAL segment 000000020000A01A0000004F has already been remove". I think it’s due to the lag between our master in EU zone and our standby in US zone.
How could we configure Postgres to handle this issue?
Thx a lot

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