AWS documentdb documentation change

Service: documentdb · 2026-03-31 · Documentation low

File: documentdb/latest/developerguide/max-update.md

Summary

Added new documentation page for the $max update operator in Amazon DocumentDB, including description, parameters, MongoDB shell example, and code examples in Node.js and Python

Security assessment

This is standard documentation for a database update operator ($max) that updates a field only if the new value is greater than the current value. The change includes code examples with TLS connection parameters (tls=true, tlsCAFile=global-bundle.pem) which are standard security practices for DocumentDB connections, but this is not new security documentation - it's just including standard connection parameters in examples. There is no evidence of addressing a specific security vulnerability or incident.

Diff

diff --git a/documentdb/latest/developerguide/max-update.md b/documentdb/latest/developerguide/max-update.md
index 8b1378917..50575a939 100644
--- a//documentdb/latest/developerguide/max-update.md
+++ b//documentdb/latest/developerguide/max-update.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#max-update "Open PDF")
@@ -1,0 +3,113 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $max
+
+The `$max` update operator updates a field's value only if the specified value is greater than the current field value. This operator is useful for maintaining maximum values across updates.
+
+**Parameters**
+
+  * `field`: The field to update.
+
+  * `value`: The value to compare with the current field value.
+
+
+
+
+## Example (MongoDB Shell)
+
+The following example demonstrates using the `$max` operator to update the highest recorded score for a player.
+
+**Create sample documents**
+    
+    
+    db.scores.insertMany([
+      { _id: 1, player: "Alice", highScore: 85 },
+      { _id: 2, player: "Bob", highScore: 92 },
+      { _id: 3, player: "Charlie", highScore: 78 }
+    ])
+
+**Update example**
+    
+    
+    db.scores.updateOne(
+      { _id: 1 },
+      { $max: { highScore: 95 } }
+    )
+
+**Result**
+
+The `highScore` field for Alice is updated to 95 because 95 is greater than the current value of 85.
+    
+    
+    { "_id": 1, "player": "Alice", "highScore": 95 }
+
+## Code examples
+
+To view a code example for using the `$max` command, choose the tab for the language that you want to use:
+
+Node.js
+    
+    
+    
+    const { MongoClient } = require('mongodb');
+    
+    async function example() {
+      const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
+      const db = client.db('test');
+      const collection = db.collection('scores');
+    
+      const result = await collection.updateOne(
+        { _id: 1 },
+        { $max: { highScore: 95 } }
+      );
+    
+      console.log(result);
+      await client.close();
+    }
+    
+    example();
+
+Python
+    
+    
+    
+    from pymongo import MongoClient
+    
+    def example():
+        client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
+        db = client['test']
+        collection = db['scores']
+    
+        result = collection.update_one(
+            { '_id': 1 },
+            { '$max': { 'highScore': 95 } }
+        )
+    
+        print(result)
+        client.close()
+    
+    example()
+
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+
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+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$inc
+
+$min
+
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+
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