min-slaves-to-write: initial description of the feature in redis.conf

1 files changed, 16 insertions, 0 deletions

diff --git a/redis.conf b/redis.conf
index 33e7a62e1..258c0554b 100644
--- a/redis.conf
+++ b/redis.conf
@@ -267,6 +267,22 @@ repl-disable-tcp-nodelay no
 # By default the priority is 100.
 slave-priority 100
 
+# It is possible for a master to stop accepting writes if there are less than
+# N slaves connected, having a lag less or equal than M seconds.
+#
+# The N slaves need to be in "online" state.
+#
+# The lag in seconds, that must be <= the specified value, is calculated from
+# the last ping received from the slave, that is usually sent every second.
+#
+# This option does not GUARANTEES that N replicas will accept the write, but
+# will limit the window of exposure for lost writes in case not enough slaves
+# are available, to the specified number of seconds.
+#
+# For example to require at least 3 slaves with a lag <= 10 seconds use:
+#
+# repl-min-slaves-to-write 3 10
+
 ################################## SECURITY ###################################
 
 # Require clients to issue AUTH <PASSWORD> before processing any other