Update limits.md

Author: gahl-levy

articles/cosmos-db/mongodb/vcore/limits.md

@@ -15,35 +15,36 @@ This document provides an overview of the service limits for Azure Cosmos DB for
 
 ## Query and Execution Limits
 
-### Maximum MongoDB Query Memory Size
-- The maximum memory size for MongoDB queries depends on the tier. For example, for M80, the query memory size limit is approximately 150 MiB.
-- In sharded clusters, if a query pulls data across nodes, the limit on that data size is 1GB.
-
-### Maximum Execution Time for MongoDB Operations
+### MongoDB Execution Limits
 - Maximum transaction lifetime: 30 seconds.
 - Cursor lifetime: 10 minutes. Note: A cursorNotFound error might occur if the cursor exceeds its lifetime.
-- Default: 120 seconds. This can be overridden on a per-query basis using `maxTimeMS`.
+- Default query execution limit: 120 seconds. This can be overridden on a per-query basis using `maxTimeMS`.
 #### Example:
 ```javascript
 db.collection.find({ field: "value" }).maxTimeMS(5000)
 ```
 
+### Maximum MongoDB Query Size
+- The maximum memory size for MongoDB queries depends on the tier. For example, for M80, the query memory size limit is approximately 150 MiB.
+- In sharded clusters, if a query pulls data across nodes, the limit on that data size is 1GB.
+
 ## Indexing Limits
 
 ### General Indexing Limits
-- Maximum number of compound index paths: 32.
+- Maximum number of compound index fields: 32.
 - Maximum size for `_id` field value: 2KB.
 - Maximum size for index path: 256B.
+- Default maximum: 64.
+  - Configurable up to: 300 indexes per collection.
 - Sorting is done in memory and does not push down to the index.
-- Background index builds are in private preview. To enable, customers need to file a support ticket.
-- A single index build can be in progress on the same collection.
-- The number of simultaneous index builds on different collections is configurable (default: 2).
-- Use the `currentOp` command to view the progress of long-running index builds.
-- Unique index builds are done in the foreground and block writes in the collection.
-- Composite indexes do not support geospatial indexes (2d, 2d sphere indexes).
+- Maximum level of nesting for embedded objects/arrays on index definitions: 6.
+- Background index builds are in preview. To enable, please file a support ticket.
+  - A single index build can be in progress on the same collection.
+  - The number of simultaneous index builds on different collections is configurable (default: 2).
+  - Use the `currentOp` command to view the progress of long-running index builds.
+  - Unique index builds are done in the foreground and block writes in the collection.
 
 ### Wildcard Indexing Limits
-- No specific limits; restrictions mirror MongoDB wildcard index restrictions.
 - For wildcard indexes, if the indexed field is an array of arrays, the entire embedded array is taken as a value instead of traversing its contents.
 
 ### Geospatial Indexing Limits
@@ -62,8 +63,6 @@ db.collection.find({ field: "value" }).maxTimeMS(5000)
 - Case insensitive tokenization is not supported yet.
 
 ### Vector Search Limits
-- Supported distance metrics: L2 (Euclidean), inner product, and cosine.
-- Supported indexing methods: IVFFLAT (GA) and HSNW.
 - Indexing vectors up to 2,000 dimensions in size.
 - Indexing applies to only one vector per path.
 - Only one index can be created per vector path.
@@ -94,7 +93,7 @@ db.collection.find({ field: "value" }).maxTimeMS(5000)
 - Maximum: 6 (in preview). Contact support for additional shards.
 
 ### Secondary Regions
-- Maximum: 1. Contact support for additional regions.
+- Maximum: 1 additional secondary region. Contact support for additional regions.
 
 ### Free Tier Limits
 The following limitations can be overidden by upgrading a paid tier
@@ -106,12 +105,6 @@ The following limitations can be overidden by upgrading a paid tier
 - No service-level-agreement provided (requires HA to be enabled)
 - Free tier clusters are paused after 60 days of inactivity where there are no connections to the cluster.
 
-## Collection, Index, and Database Limits
-
-### Indexes
-- Default maximum: 64.
-- Configurable up to: 300 indexes per collection.
-
 ## Replication and HA Limits
 
 ### Cross-Region Replication
@@ -125,9 +118,6 @@ The following limitations can be overidden by upgrading a paid tier
 
 ## Miscellaneous Limits
 
-### Nesting Levels
-- Maximum level of nesting for embedded objects/arrays on index definitions: 6.
-
 ### Portal Mongo Shell Usage
 - The Portal Mongo Shell can be used for 120 minutes within a 24-hour window.