diff --git a/redis.conf b/redis.conf
index 38e73bb5f..30a3d8b57 100644
--- a/redis.conf
+++ b/redis.conf
@@ -2145,6 +2145,30 @@ hll-sparse-max-bytes 3000
 stream-node-max-bytes 4096
 stream-node-max-entries 100
 
+# Redis Streams support Idempotent Message Producer (IDMP) tracking to prevent
+# duplicate message delivery. When producers send messages with IDMP identifiers
+# (using XADD with IDMP or IDMPAUTO parameters), Redis tracks these identifiers to
+# detect and reject duplicates within a configurable time window.
+#
+# stream-idmp-duration: Specifies how long (in seconds) Redis should remember
+# IDMP identifiers for duplicate detection. After this duration expires, old
+# identifiers are automatically removed. This prevents unbounded memory growth
+# while allowing reasonable duplicate detection windows.
+# Valid range: 1 to 86400 seconds (1 second to 24 hours)
+# Default: 100 seconds
+#
+# stream-idmp-maxsize: Maximum number of IDMP identifiers to track per producer
+# per stream. Once this limit is reached, the oldest identifiers are evicted to
+# make room for new ones. This caps memory usage for IDMP tracking.
+# Valid range: 1 to 10000 entries
+# Default: 100 entries
+#
+# Note: These are default values for new streams. Individual streams can override
+# these settings using the XCFGSET command.
+#
+# stream-idmp-duration 100
+# stream-idmp-maxsize 100
+
 # Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in
 # order to help rehashing the main Redis hash table (the one mapping top-level
 # keys to values). The hash table implementation Redis uses (see dict.c)