Scylla Roadmap

Scylla has been Generally Available (GA) since March 2016 and now is in production for multiple users. In addition to the open source project, Scylla Enterprise offers an additional set of features and tools.

Scylla is a drop-in replacement for Apache Cassandra 2.2, with selected features from Apache Cassandra 3.x. In particular, the following interfaces are compatible with Apache Cassandra.

  • All Apache Cassandra Drivers
  • Protocols: CQL, Thrift, JMX
  • Tooling: cqlsh, nodetool, cassandra-stress, and all of Cassandra 2.2 tools
  • SSTable format

Read more about Scylla/Apache Cassandra compatibility.

Scylla 2.0.1 is the latest Scylla production release.

Scylla Enterprise 2017.1.2 is the latest Scylla Enterprise release

Scylla Open Source Roadmap

ScyllaDB is an open source company that is committed to open innovation and transparency.

This page is a point-in-time snapshot of our current efforts and plans, however our plans are always responsive to customer input, market evolution, and development constraints.

Track progress through the open source Scylla project on GitHub including a public project issue tracker. You are welcome to add feature requests and vote for your favorite issue.

This Scylla open source project roadmap is intended to outline general product direction and should not be relied upon in making purchasing decisions. The content is for informational purposes only and may change. In general, we will follow Apache Cassandra upstream and adopt any feature that can serve our users.

We release a Scylla minor version each month, with both bug fixes and new features. Complex features will be flagged as experimental for one release, marking them as completed, but not thoroughly tested yet. The list below includes features visible to the users. At the same time, we put most of our effort into internal optimizations, performance improvements, and workload conditioning.

Scylla is moving fast! Keep an eye on the scylladb-users mailing list for updates.

Selected features plan:

  • Materialized View - Experimental Scylla 2.0 and 2.1, production ready Scylla 2.2 / 2.3
  • Secondary indexes - Experimental Scylla 2.1, production ready Scylla 2.2 / 2.3
  • Hinted Handoff - Experimental in Scylla 2.1, production ready Scylla 2.2
  • Time Window Compaction Strategy (TWCS) - Scylla 2.1
  • New CPU scheduler - Scylla 2.1
  • Role Based Access Control - Scylla 2.2
  • Improve range scan performance - Scylla 2.2
  • Lightweight Transactions (LWT) - Experimental in Scylla 2.3
  • Byte granularity repair - Scylla 2.3
  • CQL GroupBy - Scylla 2.3
  • Apache Cassandra 3.x storage format (sstable) - Scylla 2.4
  • Incremental Repair - Scylla 2.4
  • User Defined Function (UDF)
  • Capturing table activity with streams

We have great plans for the second half of 2017 and beyond, including an improved disk format, different database enhancements and integration with analytics and search.

Want to hear more on our ideas for Scylla open source and Scylla Enterprise? Please contact us.

Beyond 2.x: Scylla in the future

Scylla’s longer-term features are divided the future into three categories:

  1. Core features. These are improvements to deepen the Scylla advantage: New storage format, additional columnar format, hook Seastar userspace TCP stack to Scylla, K/V optimizations, true multi-tenancy to guarantee SLA among tenants, DBaaS, management console, and more.
  2. Vertical enhancements. Spark and Scylla are a combination made in heaven. We will enhance the interface with MapReduce aggregations on the Scylla side and prevent expensive full-table-scans. Spark is one example; Presto, KairosDB, and JanusGraph are additional viable examples. Vertical enhancement isn’t just upwards but also downwards towards the hardware. A userspace filesystem and 3D-xpoint are on the horizon too.
  3. Horizontal growth. When you have an engine such as Seastar and clustering technology derived from Apache Cassandra, why settle for CQL? We’ve shown that Seastar can create blazing-fast httpd. Alibaba uses Seastar to rewrite Redis in a better way (called Parallel Redis – Pedis). There are more big data projects and we hope to get there one day. This is where you can chime in and extend Seastar for your use case.

Scylla Enterprise Roadmap

Based on the Scylla open source project, Scylla Enterprise includes a Scylla Enterprise license, tested and certified binaries, software updates, hot fixes, technical support, and best practices. Scylla Enterprise Support guarantees that you will have access to the engineers who developed Scylla. 

The latest Scylla Enterprise release, Scylla 2017.1.2 is available for evaluation 

The 2017.1 branch is based on Scylla open source 1.6; and includes backports bug fixes from upstream releases (1.7, 2.0, 2.1) as well as enterprise-only bug fixes.

Scylla Enterprise major releases are versioned as year; minor releases; and patch releases, e.g. 2017.1.2. We plan to have two Scylla Enterprise minor releases per year.

While the list below includes features visible to the users, we put most of our effort into under the hood optimizations, performance improvements, and autonomous database functionality.

Scylla open source features are migrated to Scylla Enterprise after they’ve undergone additional testing and feedback from customers. However, Scylla Enterprise also includes unique features that are not part of the open source release, with a focus on security, management and cost savings.

Upcoming Security Features:

  • Auditing - Scylla 2017.2
  • Encryption at rest - 2018.1
  • Role Based Access Control - 2018.1
  • Secure nodetool connectivity - 2018.1
  • Role-based Authentication (will be available in open source version) - 2018.1 or 2018.2
  • Kerberos, LDAP integration - 2018.2

Upcoming Management Features:

  • Scylla Management Server, enabling recurrent repairs, backup and health checks 2017.2 / 2018.1
  • Cluster management - 2018.2
  • Scylla management UI console - 2018.2
  • Scylla-as-a-Service - cloud-native managed Scylla service

Upcoming Optimizations:

  • Hybrid Compaction Strategy - 2018.1

Let’s do this

Getting started takes only a few minutes. Scylla has an installer for every major platform and is well documented. If you get stuck, we’re here to help.

Apache®, Apache Cassandra®, are either registered trademarks or trademarks of the Apache Software Foundation in the United States and/or other countries. No endorsement by The Apache Software Foundation is implied by the use of these marks.