From 593107c7f2fe474664e51f9b2ce790873f4df4f8 Mon Sep 17 00:00:00 2001 From: Jeremy Harris Date: Wed, 11 Aug 2021 12:39:41 +0100 Subject: [PATCH] Docs: addition mention of lookup caching option --- doc/doc-docbook/spec.xfpt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index 41c6478d4..8c229ce73 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -7423,6 +7423,12 @@ lookups. However, because (apart from the daemon) Exim operates as a collection of independent, short-lived processes, this caching applies only within a single Exim process. There is no inter-process lookup caching facility. +.new +If an option &"cache=no_rd"& is used on the lookup then +the cache is only written to, cached data is not used for the operation +and a real lookup is done. +.wen + For single-key lookups, Exim keeps the relevant files open in case there is another lookup that needs them. In some types of configuration this can lead to many files being kept open for messages with many recipients. To avoid hitting -- 2.30.2