Canonical: https://molo17.com/blog/gluesync-2-1-9-released/ Markdown mirror: https://molo17.com/blog/gluesync-2-1-9-released/index.md Title: Gluesync 2.1.9 released Description: Gluesync 2.1.9 introduces Logical Partitioning, new source agent caching, bulk copy upgrades and performance improvements for real-time data integration. [← All articles](/blog/) Article # Gluesync 2.1.9 released: logical partitioning, source agent caching and major performance upgrades 12 Dec 2025 [Gluesync](/blog/?category=gluesync) 4 min read Discover Gluesync 2.1.9: Logical Partitioning, new source agent caching, bulk copy upgrades and performance improvements.  MOLO17 is pleased to announce the release of **Gluesync 2.1.9**, the latest iteration of our real-time data integration platform. Following the orchestration and UI advancements introduced in versions [2.1.7](https://molo17.com/blog/gluesync-2-1-7-agent-orchestration-new-kubernetes-support/) and [2.1.8](https://molo17.com/blog/gluesync-2-1-8-released-in-platform-updates-new-cassandra-target-agent-snowflake-bulk-write-support/), this release focuses on **performance engineering, parallelism and reliability at scale**, bringing major improvements across the entire stack from source agents to UI, modules and snapshot/CDC throughput. ## Logical Partitioning: fine-grained parallelism for high-volume pipelines The headline feature of Gluesync 2.1.9 is **Logical Partitioning**, a new capability that lets users tune parallelism with precision. With this update, you can: - apply a custom partitioning key to source tables; - increase the number of parallel workers reading from the source; - define partitioning ranges for each table; - control worker allocation with fine granularity. This feature significantly improves ingestion throughput for large datasets and reduces the processing time of snapshot and CDC workloads, especially in environments where concurrency is key to meeting SLAs. Logical Partitioning is fully supported in the UI and integrated with the [Bootstrapper](https://molo17.com/blog/gluesync-bootstrapper-tool/). ## Source Agent Caching: lower database load, higher pipeline resilience Version 2.1.9 introduces a new internal **source agent caching layer**, now enabled by default for all supported agents. This new capability significantly improves how Gluesync interacts with source systems. By removing the need for database-side caching (previously known as the “Gluesync library”), it reduces the operational load on source databases and minimizes the overall resource footprint, often requiring just a single source connection. The cache is now fully managed within the agent itself, with customizable retention settings that default to one day. This redesign also increases resiliency: pipelines can remain paused for longer periods without risking data loss and recovery becomes faster and more predictable when replication resumes. The **IBM i series agent** is the first to support this new feature, with dedicated enhancements included in its changelog. A one-time migration from source-DB cache to internal cache may occur after upgrading, with progress information displayed in real time. ## Bulk Copy enabled by default + new enhancements for MS SQL Server, PostgreSQL and Snowflake **Bulk copy** is now enabled by default for Snapshots and can optionally be activated for CDC tasks on MS SQL Server agents. This brings a major throughput boost to SQL Server pipelines, cutting ingestion time for both initial loads and continuous CDC. Additional agent improvements include: - **MS SQL Server**: expanded bulk copy support across both Change Tracking and CDC agents; - **PostgreSQL**: new enhancements and fixes, plus bulk copy support; - Parquet-based agents (**AWS S3, ADLS Gen2, GCS**): CDC metadata files now include the originating transaction ID; - **IBM i series agent**: targeted refinements and stability enhancements. Combined with the [Snowflake bulk-write improvements introduced in 2.1.8](https://molo17.com/blog/gluesync-2-1-8-released-in-platform-updates-new-cassandra-target-agent-snowflake-bulk-write-support/), Gluesync continues to strengthen performance for cloud-scale analytics destinations. ## UI upgrades: improved control, clarity and performance Gluesync 2.1.9 also brings a series of refinements to the overall user experience. The interface now fully supports **Logical Partitioning**, making it easier to configure and monitor parallel processing. The **entity play/pause panel** has been completely redesigned, introducing per-entity performance tuning for read and write operations, along with options to reset checkpoints, plus point-in-time resume coming in a future update. Users can also select all **columns** as a unique identifier with a single shortcut, simplifying setup for complex tables. Beyond these new capabilities, the release includes notable **UI performance improvements** and a range of usability fixes that make daily operations smoother and more intuitive. ## Module upgrades: Conductor for Windows, enhanced Automator and Bootstrapper support Gluesync’s modules also receive important updates: **Conductor** now supports **Windows environments**, reaching feature parity with Linux; **Automator** introduces full platform backup & restore management, plus bulk import operations for entire source schemas; **Bootstrapper** includes full support for Logical Partitioning. These changes accelerate deployment, simplify maintenance and give teams more operational control across hybrid environments. ## Why upgrade to Gluesync 2.1.9 Gluesync 2.1.9 is a significant step forward for organizations requiring high-performance, real-time data integration with minimal source impact and maximum operational control. This release delivers significant advancements across the platform, starting with **higher data throughput** enabled by the new Logical Partitioning feature. Workloads also become lighter on source systems thanks to the introduction of source agent caching, which **reduces database load while improving performance**. Bulk operations see important improvements as well, benefiting both **SQL and NoSQL environments**. The **user interface** is now more powerful and responsive, making daily operations smoother. Finally, updated [**modules**](https://molo17.com/blog/gluesync-modules/) strengthen Gluesync’s orchestration capabilities, offering greater control and flexibility across deployments. Existing users can upgrade through the [Customer Portal](https://docs.molo17.com/gluesync/v2.1/latest-releases/get-gluesync.html). New users can [start a free 30-day trial](https://molo17.com/get-gluesync/) and experience Gluesync’s enterprise-grade data replication capabilities. Read the full release notes in the official [Gluesync 2.1.9 Documentation](https://docs.molo17.com/gluesync/v2.1/release-notes/release-notes.html#_latest_release_2_1_9). [← Older article Gluesync 2.1.8 released: in-platform updates and new Cassandra agent boost data integration efficiency](/blog/gluesync-2-1-8-released-in-platform-updates-new-cassandra-target-agent-snowflake-bulk-write-support/) [Newer article → Gluesync 2.1.10: performance boosts, refined UI and enhanced agent capabilities](/blog/gluesync-2-1-10/) ## Keep reading 1. [Mentioned in this article Gluesync 2.1.11.0 released: extended bulk load, improved UI, advanced snapshot control Gluesync 2.1.11: targeted enhancements to bulk loading, snapshot flexibility and usability improvements. 24 Feb 2026](/blog/gluesync-2-1-11-0/) 2. [Mentioned in this article Gluesync 2.1.8 released: in-platform updates and new Cassandra agent boost data integration efficiency Discover Gluesync 2.1.8: in-platform updates via web GUI, a new Cassandra target agent and Snowflake bulk write support. 13 Nov 2025](/blog/gluesync-2-1-8-released-in-platform-updates-new-cassandra-target-agent-snowflake-bulk-write-support/) 3. [Mentioned in this article Gluesync 2.1.7 released: Conductor brings agent orchestration and new Kubernetes support Discover Gluesync 2.1.7 introducing Conductor for automated agent orchestration, revamped Kubernetes support and improved Docker Compose deployment. 27 Oct 2025](/blog/gluesync-2-1-7-agent-orchestration-new-kubernetes-support/) [Back to all articles](/blog/) [More in Gluesync →](/blog/?category=gluesync)