NXDOC-2686: Document Amazon DocumentDB support

Author: NourNuxeo

src/nxdoc/nuxeo-server/administration/database-configuration.md

@@ -163,6 +163,7 @@ This takes two steps:
     *   [MySQL]({{page page='mysql'}})
     *   [MariaDB]({{page page='mariadb'}})
     *   [MongoDB]({{page page='mongodb'}})
+    *   [DocumentDB]({{page page='documentdb'}})
 2.  [Connect Nuxeo to the database]({{page page='connecting-nuxeo-to-the-database'}}).
 
  

src/nxdoc/nuxeo-server/administration/database-configuration/documentdb.md

@@ -0,0 +1,43 @@
+---
+title: Amazon DocumentDB
+labels:
+    - database
+    - documentdb
+tree_item_index: 700
+
+---
+The Nuxeo Platform supports Amazon DocumentDB
+
+## Configuration
+
+Since Nuxeo 2023.15, using the `mongodb` template, you can use `DocumentDB` as a `DBS` solution with some limitations:
+
+- fulltext is not supported as `DocumentDB` has various limitations in that aspect (english only, no term exclusion, semantics differences...) see [Differences With MongoDB](https://docs.aws.amazon.com/documentdb/latest/developerguide/text-search.html#text-index-mongo-diff) for more details.
+You need to disable it like with the following nuxeo configuration:
+```properties
+nuxeo.vcs.fulltext.search.disabled=true
+```
+- depending on your cluster size, you might encounter concurrent cursors limitations. It will result with a message similar to this:
+```console
+Cannot open a new cursor since too many cursors are already opened
+```
+- hashed indexes are not supported.
+- retryable writes are not supported. See [Transactions' limitations](https://docs.aws.amazon.com/documentdb/latest/developerguide/functional-differences.html#functional-differences.retryable-writes). You need to disable this in your connection string with a query parameter like below:
+```properties
+nuxeo.mongodb.server=mongodb://user:password@myhost:27017/?retryWrites=false
+```
+
+For all other configuration information, please refer to the [MongoDB configuration page]({{page page='mongodb'}}).
+
+* * *
+
+<div class="row" data-equalizer data-equalize-on="medium"><div class="column medium-6">{{#> panel heading='Related topics'}}
+
+- [Connecting Nuxeo to the Database]({{page page='connecting-nuxeo-to-the-database'}})
+- [How to Estimate Volume Usage]({{page page='how-to-estimate-volume-usage'}})
+
+{{/panel}}</div><div class="column medium-6">
+
+&nbsp;
+
+</div></div>