commited new default services and settings after D9 upgrade

web/sites/default/default.services.yml

@@ -11,10 +11,11 @@ parameters:
     # @default 100
     gc_divisor: 100
     #
-    # Set session lifetime (in seconds), i.e. the time from the user's last
+    # Set session lifetime (in seconds), i.e. the grace period for session
-    # visit to the active session may be deleted by the session garbage
+    # data. Sessions are deleted by the session garbage collector after one
-    # collector. When a session is deleted, authenticated users are logged out,
+    # session lifetime has elapsed since the user's last visit. When a session
-    # and the contents of the user's $_SESSION variable is discarded.
+    # is deleted, authenticated users are logged out, and the contents of the
+    # user's session is discarded.
     # @default 200000
     gc_maxlifetime: 200000
     #

web/sites/default/default.settings.php

@@ -138,50 +138,17 @@ $databases = [];
  * request as needed.  The fourth line creates a new database with a name of
  * "extra".
  *
- * You can optionally set prefixes for some or all database table names
+ * You can optionally set a prefix for all database table names by using the
- * by using the 'prefix' setting. If a prefix is specified, the table
+ * 'prefix' setting. If a prefix is specified, the table name will be prepended
- * name will be prepended with its value. Be sure to use valid database
+ * with its value. Be sure to use valid database characters only, usually
- * characters only, usually alphanumeric and underscore. If no prefixes
+ * alphanumeric and underscore. If no prefix is desired, do not set the 'prefix'
- * are desired, leave it as an empty string ''.
+ * key or set its value to an empty string ''.
  *
- * To have all database names prefixed, set 'prefix' as a string:
+ * For example, to have all database table prefixed with 'main_', set:
  * @code
  *   'prefix' => 'main_',
  * @endcode
  *
- * Per-table prefixes are deprecated as of Drupal 8.2, and will be removed in
- * Drupal 9.0. After that, only a single prefix for all tables will be
- * supported.
- *
- * To provide prefixes for specific tables, set 'prefix' as an array.
- * The array's keys are the table names and the values are the prefixes.
- * The 'default' element is mandatory and holds the prefix for any tables
- * not specified elsewhere in the array. Example:
- * @code
- *   'prefix' => [
- *     'default'   => 'main_',
- *     'users'     => 'shared_',
- *     'sessions'  => 'shared_',
- *     'role'      => 'shared_',
- *     'authmap'   => 'shared_',
- *   ],
- * @endcode
- * You can also use a reference to a schema/database as a prefix. This may be
- * useful if your Drupal installation exists in a schema that is not the default
- * or you want to access several databases from the same code base at the same
- * time.
- * Example:
- * @code
- *   'prefix' => [
- *     'default'   => 'main.',
- *     'users'     => 'shared.',
- *     'sessions'  => 'shared.',
- *     'role'      => 'shared.',
- *     'authmap'   => 'shared.',
- *   ];
- * @endcode
- * NOTE: MySQL and SQLite's definition of a schema is a database.
- *
  * Advanced users can add or override initial commands to execute when
  * connecting to the database server, as well as PDO connection settings. For
  * example, to enable MySQL SELECT queries to exceed the max_join_size system