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authorBrendan Abolivier <babolivier@matrix.org>2020-02-12 20:12:20 +0000
committerGitHub <noreply@github.com>2020-02-12 20:12:20 +0000
commit6cd34da8b1138715d152539eacff653f6fdeb3b2 (patch)
tree0fd18c26cfc8669466f8507080513a9479080bea /docs/message_retention_policies.md
parentReturn a 404 for admin api user lookup if user not found (#6901) (diff)
parentRephrase (diff)
downloadsynapse-6cd34da8b1138715d152539eacff653f6fdeb3b2.tar.xz
Merge pull request #6891 from matrix-org/babolivier/retention-doc-amend
Spell out that the last event sent to a room won't be deleted by a purge
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diff --git a/docs/message_retention_policies.md b/docs/message_retention_policies.md
index 4300809dfe..1dd60bdad9 100644
--- a/docs/message_retention_policies.md
+++ b/docs/message_retention_policies.md
@@ -42,6 +42,10 @@ purged according to its room's policy, then the receiving server will
 process and store that event until it's picked up by the next purge job,
 though it will always hide it from clients.
 
+Synapse requires at least one message in each room, so it will never
+delete the last message in a room. It will, however, hide it from
+clients.
+
 
 ## Server configuration