[DOC-13459]: Create a release note for Couchbase Server 7.6.8

modules/release-notes/pages/relnotes.adoc

@@ -2,6 +2,9 @@
 :page-aliases: analytics:releasenote
 :description: Couchbase Server 7.6.x introduces multiple new features and fixes, as well as some deprecations and removals.
 :page-toclevels: 2
+:stem:
+
+include::partial$docs-server-7.6.8-release-note.adoc[]
 
 include::partial$docs-server-7.6.7-release-note.adoc[]
 

modules/release-notes/partials/docs-server-7.6.8-release-note.adoc

@@ -0,0 +1,149 @@
+
+[#release-768]
+== Release 7.6.8 (November 2025)
+
+Couchbase Server 7.6.8 was released in November 2025.
+This maintenance release contains fixes to issues.
+
+== Fixed Issues
+
+
+
+
+=== Cluster Manager
+[#table-fixed-issues-768-cluster-manager, cols='10,40,40']
+|===
+|Issue | Description | Resolution
+
+
+|https://jira.issues.couchbase.com/browse/MB-67106/[MB-67106]
+
+a|*Metric Rename – Cache Miss Ratio → Get Miss Ratio*
+The _Cache Miss Ratio_ metric name suggested it measured memory or disk caching performance.
+In practical instances, as of version 7.6.2, it was redefined to measure the proportion of read (`get`) operations that fail because the requested key is not present in the bucket at all.
+ To eliminate this confusion, the metric has been renamed to *Get Miss Ratio*.
+
+| Issue resolved
+
+
+|https://jira.issues.couchbase.com/browse/MB-67758/[MB-67758]
+
+a|Prior to the 7.6.8 release, the auto-failover pop up alerts, as documented in link:https://docs.couchbase.com/server/current/manage/manage-settings/configure-alerts.html#saving-and-testing-the-alert-configuration[Saving and Testing the Alert Configuration] did not work.
+
+This has been fixed.
+
+| Issue resolved
+
+
+|===
+
+
+
+=== Data Service
+[#table-fixed-issues-768-data-service, cols='10,40,40']
+|===
+|Issue | Description | Resolution
+
+
+|https://jira.issues.couchbase.com/browse/MB-66876/[MB-66876]
+
+a|The `magma_min_value_block_size_threshold` has been adjusted to INT_MAX for version 7.6.x, ensuring that block compression applies consistently for documents larger than 64 KiB.
+This change is not required for version 8.0.0 due to differences in configuration management.
+Couchbase recommends that if `magma_per_document_compression_enabled` is set to false, `magma_min_value_block_size_threshold` should also be set to `infinity` to maintain compression behavior.
+This resolves an issue with the Magma storage engine not compressing documents during persistence, which has been addressed in recent builds.
+The changes are confirmed and the ticket is closed after reviewing the code updates.
+
+// Generated by [chatgpt:gpt-4o]
+
+| Issue resolved
+
+
+|https://jira.issues.couchbase.com/browse/MB-67106/[MB-67106]
+
+a|*Metric Rename – Cache Miss Ratio → Get Miss Ratio*
+The _Cache Miss Ratio_ metric name suggested it measured memory or disk caching performance.
+In reality, as of version 7.6.2, it was redefined to measure the proportion of read (`get`) operations that fail because the requested key is not present in the bucket at all.
+ To eliminate this confusion, the metric has been renamed to *Get Miss Ratio*.
+
+| Issue resolved
+
+
+|===
+
+
+
+
+
+=== XDCR
+[#table-fixed-issues-768-xdcr, cols='10,40,40']
+|===
+|Issue | Description | Resolution
+
+
+|https://jira.issues.couchbase.com/browse/MB-66649/[MB-66649]
+
+a|When modifying filter expressions or mapping configurations (explicit/migration), race conditions may prevent proper replication from the source.
+This can result in source bucket documents failing to replicate to the target bucket.
+To address this issue, the system now displays an alert when detecting replication resuming from stale checkpoints.
+This alert notifies users to delete and recreate the affected replication.
+IMPORTANT: Do not dismiss this alert by pausing and resuming the replication, as this will hide the warning without resolving the underlying issue.
+
+| Issue resolved
+
+
+|===
+
+
+
+=== Query Service
+[#table-fixed-issues-768-query-service, cols='10,40,40']
+|===
+|Issue | Description | Resolution
+
+
+|https://jira.issues.couchbase.com/browse/MB-66703/[MB-66703]
+
+a|Added a plan version to prepared statements and logic to trigger  reprepare when outdated plans are detected.
+This avoids duplicate OFFSET execution in mixedmode clusters due to changes in ORDER BY and LIMIT/OFFSET handling.
+
+| Issue resolved
+
+
+|https://jira.issues.couchbase.com/browse/MB-67849/[MB-67849]
+
+a|The recent builds of Couchbase Server versions 7.2.7 through 8.1.0 and Enterprise Analytics 2.1.0 include updates from the `go_json` library to address int64 overflow issues reported under MB-67849.
+The updates involve implementing proper checks for int64 overflow  to properly represent large numbers (greater than 2^63^or less than -2^63^).
+
+| Issue resolved
+
+
+|===
+
+
+
+
+
+
+
+
+
+
+
+=== Tools
+[#table-fixed-issues-768-tools, cols='10,40,40']
+|===
+|Issue | Description | Resolution
+
+
+|https://jira.issues.couchbase.com/browse/MB-60676/[MB-60676]
+
+a|Previously in clusters with the backup service running on multiple nodes it was possible for more than one task on a repo to be attempted at the same, causing all but one of these tasks to fail.
+If multiple tasks are scheduled to run at the same time, we now skip all but the first one.
+
+| Issue resolved
+
+
+|===
+
+
+

preview/HEAD.yml

@@ -1,6 +1,4 @@
 sources:
-  docs-server:
-    branches: [DOC-13396-Create-release-note-for-7.6.7-Release,DOC-13372-Create-release-note-for-docs-server-7.2.8]
   docs-devex:
     branches: release/7.6
   cb-swagger: