(DOCSP-17931): Updated link. (mongodb#5815)

* (DOCSP-17931): Updated link.

* Update source/reference/connection-string.txt

Co-authored-by: jdestefano-mongo <jonathan.destefano@10gen.com>

Author: 2 people

source/core/timeseries-collections.txt

@@ -353,8 +353,8 @@ index for a time series collection is not displayed by
 Default Compression Algorithm
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Time series collections ignore the global default compression algorithm,
-:term:`snappy`, in favor of :term:`zstd`, unless a different compression
+Time series collections use the default collection compression algorithm,
+:term:`zstd`, unless a different compression
 algorithm is specified using the ``storageEngine`` option when the
 collection was created. For example, to change the compression algorithm
 to ``snappy`` for a new ``weather`` collection, add the following

source/core/wiredtiger.txt

@@ -85,9 +85,9 @@ to replay all data modified since the last checkpoint. For information
 on the frequency with which MongoDB writes the journal data to disk,
 see :ref:`journal-process`.
 
-WiredTiger journal is compressed using the :term:`snappy` compression
-library. To specify a different compression algorithm or no
-compression, use the
+Starting in MongoDB 5.1, WiredTiger journal is compressed using 
+the :term:`zstd` compression library. To specify a different 
+compression algorithm or no compression, use the
 :setting:`storage.wiredTiger.engineConfig.journalCompressor` setting.
 For details on changing the journal compressor, see
 :ref:`manage-journaling-change-wt-journal-compressor`.
@@ -119,15 +119,17 @@ With WiredTiger, MongoDB supports compression for all collections and
 indexes. Compression minimizes storage use at the expense of additional
 CPU.
 
-By default, WiredTiger uses block compression with the :term:`snappy`
-compression library for all collections and :term:`prefix compression`
-for all indexes.
+Starting in MongoDB 5.1, WiredTiger has the following default settings: 
 
-For collections, the following block compression libraries are also available:
+- block compression with the zstd compression library for all collections.
+- prefix compression for all indexes.
+
+For collections, the following block compression libraries are also 
+available:
 
 - :term:`zlib` 
 
-- :term:`zstd` (Available starting in MongoDB 4.2)
+- :term:`snappy`
 
 To specify an alternate compression algorithm or no compression, use
 the :setting:`storage.wiredTiger.collectionConfig.blockCompressor`

source/faq/storage.txt

@@ -60,9 +60,13 @@ How much compression does WiredTiger provide?
 
 The ratio of compressed data to uncompressed data depends on your data
 and the compression library used. By default, collection data in
-WiredTiger use :term:`Snappy block compression <snappy>`; :term:`zlib`
-and :term:`zstd` compression is also available. Index data use
-:term:`prefix compression` by default.
+WiredTiger use :term:`zstd` *(Starting in MongoDB 5.1)* ; :term:`zlib` 
+and :term:`Snappy block compression <snappy>` compression is 
+also available. Index data use :term:`prefix compression` by default.
+
+.. note:: 
+
+   .. include:: /includes/fact-5.1-default-block-compression.rst
 
 .. _wt-cache-and-eviction:
 

source/includes/fact-5.1-default-block-compression.rst

@@ -0,0 +1,5 @@
+Starting in MongoDB 5.1, the default block compression engine used for 
+MongoDB collections and journal data is :term:`zstd`.
+
+In previous versions, the default block compression engine used was  
+:term:`snappy<snappy>`.

source/reference/configuration-options.txt

@@ -3914,7 +3914,7 @@ LDAP Parameters
 
 .. setting:: storage.wiredTiger.collectionConfig.blockCompressor
 
-   *Default*: snappy
+   *Default*: zstd *(Starting in MongoDB 5.1)*
 
    Specifies the default compression for collection data. You can
    override this on a per-collection basis when creating collections.

source/reference/connection-string.txt

@@ -130,8 +130,8 @@ Examples
            your deployment when you click the :atlas:`Connect
            </connect-to-database-deployment/>` button in the Atlas UI. 
            To register a new Atlas account, start at the 
-           :mdbacct:`MongoDB Atlas registration page 
-           </register?tck=docs_server>`. To learn more, see
+           `MongoDB Atlas registration page 
+           <https://www.mongodb.com/cloud/atlas/register?tck=docs_server_connection_cta>`__. To learn more, see
            :atlas:`Get Started with Atlas </getting-started/>`.
 
            Your Atlas connection string might resemble the following 

source/reference/glossary.txt

@@ -900,9 +900,7 @@ Glossary
    snappy
       A compression/decompression library designed to balance
       efficient computation requirements with reasonable compression rates.
-      Snappy is the default compression
-      library for MongoDB's use of :ref:`WiredTiger
-      <storage-wiredtiger>`. See `Snappy
+      See `Snappy
       <https://google.github.io/snappy/>`_ and the :wtdocs:`WiredTiger compression
       documentation </compression.html>`
       for more information.

source/reference/program/mongod.txt

@@ -1733,7 +1733,7 @@ WiredTiger Options
 
 .. option:: --wiredTigerCollectionBlockCompressor <compressor>
 
-   *Default*: snappy
+   *Default*: zstd *(Starting in MongoDB 5.1)*
 
    Specifies the default compression for collection data. You can
    override this on a per-collection basis when creating collections.

source/release-notes/5.1.txt

@@ -59,6 +59,14 @@ determines whether the temporary documents required for :ref:`retryable
 <retryable-writes>` :dbcommand:`findAndModify` commands are stored in
 the *side* collection (``config.image_collection``).
 
+Default Block Compression Changed
+---------------------------------
+
+.. include:: /includes/fact-5.1-default-block-compression.rst
+
+The :term:`zstd` compression engine provides better compression ratios
+and will provide a better experience to the average mongoDB user.
+
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