4.7.21 release notes

Author: kriszyp

release-notes/v4-tucker/4.7.21.md

@@ -0,0 +1,12 @@
+---
+title: 4.7.21
+---
+
+# 4.7.21
+
+3/6/2026
+
+- Don't send a `Content-Length: 0` header for responses to HEAD requests.
+- Fix the coalescing time function to properly stream instead of buffering.
+- Improve support for prioritizing certifications by usage and allow for alternate name/primary key assignment.
+- Add support for configuring the maximum payload of replication connections.

versioned_docs/version-4.7/deployments/configuration.md

@@ -598,6 +598,10 @@ When true, Harper will attempt to fail-over to subscribing to a different node i
 
 This defines the shard id of this instance and is used in conjunction with the [Table Resource functions](../developers/replication/sharding#custom-sharding) `setResidency` & `setResidencyById` to programmatically route traffic to the proper shard.
 
+`maxPayload` - _Type_: integer; _Default_: 100000000 (100MB)
+
+This sets the maximum payload size for replication messages.
+
 ---
 
 ### `clustering` using NATS