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Author: xuniq

doc/code_snippets/snippets/config/instances.enabled/persistence_snapshot/config.yaml

@@ -8,7 +8,7 @@ groups:
               dir: 'var/lib/{{ instance_name }}/snapshots'
               count: 10
               by:
-                interval: 60
+                interval: 7200
             iproto:
               listen:
               - uri: '127.0.0.1:3301'

doc/concepts/configuration/configuration_persistence.rst

@@ -30,7 +30,7 @@ Configure the automatic snapshot creation
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 In Tarantool, it is possible to set automatic :ref:`snapshot creation </reference/reference_lua/box_snapshot>`.
-To enable it, the :ref:`snapshot.by.interval <configuration_reference_snapshot_by_interval>` option is used.
+The feature is enabled by default with the :ref:`snapshot.by.interval <configuration_reference_snapshot_by_interval>` option.
 The option sets up the :ref:`checkpoint daemon <configuration_persistence_checkpoint_daemon>` that takes new snapshots
 every ``snapshot.by.interval`` seconds.
 When the number of snapshots reaches the limit of :ref:`snapshot.count <configuration_reference_snapshot_count>` size,
@@ -46,7 +46,7 @@ The configuration of the checkpoint daemon might look as follows:
 ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/persistence_snapshot/config.yaml
     :language: yaml
     :start-at: count:
-    :end-at: 60
+    :end-at: 7200
     :dedent:
 
 If the ``snapshot.by.interval`` option is set to zero, the checkpoint daemon is disabled.

doc/reference/configuration/configuration_reference.rst

@@ -2414,9 +2414,12 @@ To learn more about the snapshots' configuration, check the :ref:`Persistence <c
 
 ..  confval:: snapshot.dir
 
-    A directory where memtx stores snapshot (.snap) files. Can be relative to
-    ``process.work_dir``. If not specified, defaults to
-    ``process.work_dir``. See also: :ref:`wal.dir <configuration_reference_wal_dir>`.
+    A directory where memtx stores snapshot (.snap) files.
+    A relative path in this option is interpreted as relative to ``process.work_dir``.
+
+    By default, snapshots and WAL files are stored in the same directory.
+    You can set different values for the ``snapshot.dir`` and :ref:`wal.dir <configuration_reference_wal_dir>` options
+    to store them on different physical disks for performance matters.
 
     |
     | Type: string
@@ -2458,10 +2461,10 @@ To learn more about the snapshots' configuration, check the :ref:`Persistence <c
 
         snapshot:
           by:
-            interval: 60
+            interval: 7200
           count: 10
 
-    In the example, the checkpoint daemon creates a new snapshot each hour until
+    In the example, the checkpoint daemon creates a new snapshot every two hours until
     it has created ten snapshots. After that, it deletes the oldest snapshot
     (and any associated write-ahead-log files) after creating a new one.
 
@@ -2496,10 +2499,10 @@ snapshot.by.*
     ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/persistence_snapshot/config.yaml
         :language: yaml
         :start-at: by:
-        :end-at: interval: 60
+        :end-at: interval: 7200
         :dedent:
 
-    In the example, the checkpoint daemon creates a new database snapshot once per minute, if there is activity.
+    In the example, the checkpoint daemon creates a new database snapshot every two hours, if there is activity.
 
     |
     | Type: number
@@ -2571,11 +2574,12 @@ To learn more about the WAL configuration, check the :ref:`Persistence <configur
 
 ..  confval:: wal.dir
 
-    A directory where write-ahead log (.xlog) files are stored. Can be relative
-    to ``process.work_dir``. Sometimes ``wal.dir`` and
-    :ref:`snapshot.dir <configuration_reference_snapshot_dir>` are specified with different values, so
-    that write-ahead log files and snapshot files can be stored on different
-    disks. If not specified, defaults to ``process.work_dir``.
+    A directory where write-ahead log (.xlog) files are stored.
+    A relative path in this option is interpreted as relative to ``process.work_dir``.
+
+    By default, WAL files and snapshots are stored in the same directory.
+    You can set different values for the ``wal.dir`` and :ref:`snapshot.dir <configuration_reference_snapshot_dir>` options
+    to store them on different physical disks for performance matters.
 
     |
     | Type: string