* chore: add range cache for routing

* incorporate changes

* switch loop with stream

* chore: integrate location aware routing with RPCs

* add option to accept channel endpoint cache factory

* chore: generate libraries at Wed Jan 28 21:18:03 UTC 2026

* use test-proto for golden tests

* add constant value encoding

* all rpcs on explicit begin started transactions should use same server/channel conncetion

* fix build

* chore: generate libraries at Thu Jan 29 07:38:05 UTC 2026

* fix doc

* refactored classes

* more refactoring

* fix nits

---------

Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

…4298)

* feat: Adding Send and Ack Mutation Support for Cloud Spanner Queue

* Resolve Gemini's comments Update google-cloud-spanner/src/main/java/com/google/cloud/spanner/Mutation.java

* Resolved comments: update mutation definition

* Fix file format

Replace old teams with new ones.
b/479542582

🤖 I have created a release *beep* *boop*
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### Updating meta-information for bleeding-edge SNAPSHOT release.

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).

…ction (#4305)

* docs: Add snippet for ReadLockMode configuration at client and transaction

* read write IT using txn options

* updated README with the sample link

* chore(main): release 6.109.0

* chore: generate libraries at Mon Feb  2 07:56:55 UTC 2026

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>