Scylla Blog

Stay up to date with recent news and updates on our Users Blog, and get under the hood on our Developers Blog.

Oct8

Hooking up Spark and Scylla: Part 3

Hooking up Spark and Scylla: Part 3

Welcome back! Last time, we discussed how Spark executes our queries and how Spark’s DataFrame and SQL APIs can be used to read data from Scylla. That concluded the querying data segment of the series; in this post, we will see how data from DataFrames can be written back to Scylla. As always, we have a code sample repository with a docker-compose.yaml file with all the necessary services we’ll need. After you’ve cloned it, start up the services with docker-compose: After that is done, launch the Spark shell as in the previous posts in order to run the samples in […]

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Oct4

Running Scylla on the DC/OS Distributed Operating System

What is DC/OS? From https://dcos.io DC/OS (the datacenter operating system) is an open-source, distributed operating system based on the Apache Mesos distributed systems kernel. DC/OS manages multiple machines in the cloud or on-premises from a single interface; deploys containers, distributed services, and legacy applications into those machines; and provides networking, service discovery and resource management to keep the services running and communicating with each other. Scylla on DC/OS A centralized management system is often used in modern data-centers, and lately the most popular and in-demand type of such a management system is centered around running and controlling containers at scale. […]

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Oct3

Scylla Summit Preview: Kiwi.com Migration to Scylla: The Why, the How, the Fails and the Status

Scylla Summit Preview: Kiwi.com Migration to Scylla: The Why, the How, the Fails and the Status

In the run-up to Scylla Summit 2018, we’ll be featuring our speakers and providing sneak peeks at their presentations. This interview in our ongoing series is with Martin Strycek of Kiwi.com. His presentation at Scylla Summit is entitled Kiwi.com Migration to Scylla: The Why, the How, the Fails and the Status. Martin, before we get into the details of your talk, we’d like to get to know you a little better. Outside of technology, what do you enjoy doing? What are your interests and hobbies? Thank you for the great opportunity to speak at Scylla Summit. I really like outdoor […]

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Oct2

Ready, Set, Train! Get Trained by the Experts at Scylla Summit!

Novice and Advanced Training at Scylla Summit 2018

I’m excited to announce this year’s Pre-Scylla Summit training day will offer two levels of training, Novice and Advanced. These hands-on training sessions will be conducted by our best and brightest staff, including our lead engineers and architects — even our co-founders will be on-hand to answer any questions from users. Both tracks are filling up so please don’t delay. Register Today! Our training day is November 5. It’s your best opportunity to master Scylla while networking with your peers. When registering be sure to choose “Scylla Summit + 1 Day Training.”  A Full Brainy Day’s Schedule View the Scylla […]

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Sep27

Scylla Summit Sneak Peek: Consensus in Eventually Consistent Databases

In the run-up to Scylla Summit 2018, we’ll be featuring our speakers and providing sneak peeks at their presentations. In the expert track, ScyllaDB Software Engineer Duarte Nunes will host a talk Consensus in Eventually Consistent Databases. Duarte is based in sunny Lisbon, where he has recently taken up surfing. When not dealing with cranky compilers or inscrutable race conditions, he enjoys good literature and landscape photography. A true epicurean, there are few things he appreciates more than a bowl of Count Chocula. What was your evolution as a developer? How did you end up working on this project at […]

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Sep26

Performance Improvements in Scylla 2.3

Scylla 2.3 was just recently released, and you can read more about that here. Aside from the many interesting feature developments like improved support for materialized views and hardware enablement like native support for AWS i3.metal baremetal instance, Scylla 2.3 also delivers even more performance improvements on top of our already industry-leading performance. Most of the performance improvements center around three pillars: Improved CPU scheduling, with more work being tagged and isolated The result of a diligent search for latency-inducing events, known as reactor stalls, particularly in the Scylla cache and in the process of writing SSTables A new, redesigned […]

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Sep25

Scylla Summit Preview: Scylla Got Slow! Using Tools, Talent and Tracing to Find Out Why

Scylla Summit 2018: Scylla got slow! Using Tools, Talent, and Tracting to Bring it up to Speed [banner graphic]

In the run-up to Scylla Summit 2018, we’ll be featuring our speakers and providing sneak peeks at their presentations. The second interview in this series is with ScyllaDB’s own Vlad Zolotarov. Vladislav “Vlad” Zolotarov is one of our experts at getting the most out of Scylla, having written articles in the past about CQL tracing, tracing slow queries, securing your cluster, and using Hinted Handoffs. He will speak at the Scylla Summit in a talk entitled Scylla Got Slow! Using Tools, Talent, and Tracing to Find Out Why. He took the time to give a sneak peek into his upcoming […]

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Sep20

Scylla Monitoring Stack 2.0

Scylla Release

The Scylla team is pleased to announce the release of Scylla Monitoring Stack 2.0 Scylla Monitoring is an open source stack for Monitoring Scylla Enterprise and Scylla Open Source, based on Prometheus and Grafana.  Scylla Monitoring 2.0 stack supports: Scylla Open Source versions 2.1, 2.2, 2.3 Scylla Enterprise versions 2017.x and 2018.x Scylla Manager 1.1 Scylla Monitoring 2.0 brings many improvements, both in dashboard usability and the underlying stack, in particular, moving to a new version of Prometheus. Please read the Monitoring upgrade guide carefully before upgrading. Enterprise users are welcome to contact us for proactive help in the upgrade […]

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Sep19

Overheard at Distributed Data Summit 2018

Distributed Data Summit 2018

  NoSQL practitioners from across the globe gathered this past Friday, 14 September 2018, in San Francisco for the latest Distributed Data Summit (#dds18). The attendees were as distributed as the data they manage, from the UK to Japan and all points between. While the event began years ago as a purely Apache Cassandra Summit, it currently bills itself as appealing to users of Apache Cassandra “and Friends.” The folks at ScyllaDB are definitely among those friends! Spinning up for the event Our team’s own efforts kicked off the night before with spinning up a 3-node cluster to show off […]

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Sep19

Scylla Open Source Release 2.3

Scylla Release

The Scylla team is pleased to announce the release of Scylla 2.3, a production-ready Scylla Open Source minor release. The Scylla 2.3 release includes CQL enhancements, new troubleshooting tools, performance improvements and more. Experimental features include Materialized Views, Secondary Indexes, and Hinted Handoff (details below). Starting from Scylla 2.3, packages are also available for Ubuntu 18.04 and Debian 9. Scylla is an open source, Apache Cassandra-compatible NoSQL database, with superior performance and consistently low latency. Find the Scylla 2.3 repository for your Linux distribution here. Our open source policy is to support only the current active release and its predecessor. […]

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