DOCS-11904: maxSessions parameter

Author: kay-kim

source/reference/parameters.txt

@@ -1213,6 +1213,27 @@ Logical Session Parameters
 
       mongod --setParameter maxAcceptableLogicalClockDriftSecs=900
 
+.. parameter:: maxSessions
+
+   .. versionadded:: 4.0.1
+
+   |both|
+
+   *Type*: integer
+
+   *Default*: 1000000
+
+   The maximum number of sessions that can be cached.
+
+   You can only set :parameter:`maxSessions` during start-up.
+
+   For example, to set the :parameter:`maxSessions`
+   for a :binary:`~bin.mongod` instance to 1000:
+
+   .. code-block:: sh
+
+      mongod --setParameter maxSessions=1000
+
 .. parameter:: TransactionRecordMinimumLifetimeMinutes
 
    .. versionadded:: 3.6

source/reference/server-sessions.txt

@@ -55,3 +55,4 @@ session.
 If the deployment transitions to authentication without any downtime, any
 sessions without an owner cannot be used.
 
+.. seealso:: :parameter:`maxSessions`