Showing entries 1 to 10 of 65
10 Older Entries »
Displaying posts with tag: cassandra (reset)
2019 Open Source Database Report: Top Databases, Public Cloud vs. On-Premise, Polyglot Persistence

Ready to transition from a commercial database to open source, and want to know which databases are most popular in 2019? Wondering whether an on-premise vs. public cloud vs. hybrid cloud infrastructure is best for your database strategy? Or, considering adding a new database to your application and want to see which combinations are most popular? We found all the answers you need at the Percona Live event last month, and broke down the insights into the following free trends reports:

[Read more]
DBEvents: A Standardized Framework for Efficiently Ingesting Data into Uber’s Apache Hadoop Data Lake

Keeping the Uber platform reliable and real-time across our global markets is a 24/7 business. People may be going to sleep in San Francisco, but in Paris they’re getting ready for work, requesting rides from Uber driver-partners. At that same …

The post DBEvents: A Standardized Framework for Efficiently Ingesting Data into Uber’s Apache Hadoop Data Lake appeared first on Uber Engineering Blog.

2019 Database Trends – SQL vs. NoSQL, Top Databases, Single vs. Multiple Database Use

Wondering which databases are trending in 2019? We asked hundreds of developers, engineers, software architects, dev teams, and IT leaders at DeveloperWeek to discover the current NoSQL vs. SQL usage, most popular databases, important metrics to track, and their most time-consuming database management tasks. Get the latest insights on MySQL, MongoDB, PostgreSQL, Redis, and many others to see which database management systems are most favored this year.

SQL vs. NoSQL

As any database administrator knows, the first question you have to ask yourself is whether to use a SQL or NoSQL database for your application. …

[Read more]
Peloton: Uber’s Unified Resource Scheduler for Diverse Cluster Workloads

Cluster management, a common software infrastructure among technology companies, aggregates compute resources from a collection of physical hosts into a shared resource pool, amplifying compute power and allowing for the flexible use of data center hardware. At Uber, cluster management …

The post Peloton: Uber’s Unified Resource Scheduler for Diverse Cluster Workloads appeared first on Uber Engineering Blog.

Databook: Turning Big Data into Knowledge with Metadata at Uber

From driver and rider locations and destinations, to restaurant orders and payment transactions, every interaction on Uber’s transportation platform is driven by data. Data powers Uber’s global marketplace, enabling more reliable and seamless user experiences across our products for riders, …

The post Databook: Turning Big Data into Knowledge with Metadata at Uber appeared first on Uber Engineering Blog.

Pythian at DataOps Barcelona

DataOps Barcelona is an event organized by Binlogic and will be taking place June 21-22, 2018 in Barcelona, Spain. Pythian is proud to be supporting this inaugural open source-focused conference in Europe!

DataOps is of course short for “Database + Operations” and contains talks about the various open-source database ecosystems and how they are operationalized with regards to cloud solutions, security, automation, high availability and scaling.

Pythian has a long history of helping companies leverage open source technologies and cloud infrastructure to meet their business requirements. We excel at managing traditional open source relational database (MySQL) and relatively new NoSQL technologies (MongoDB, Cassandra).

Our …

[Read more]
Cassandra on Fedora 27

The last time that I installed Cassandra was on a version of Fedora 20. So, I new the first thing to check was the installation of Java. You can check the Java installation with two statements on a fresh installation of Fedora 27. You need to check the Java runtime and then the Java Software Development Kit before installing, starting, and using Cassandra.

Installing Prerequisites

You check the Java runtime with this command:

java -version

It should return:

openjdk version "1.8.0_171"
OpenJDK Runtime Environment (build 1.8.0_171-b10)
OpenJDK 64-Bit Server VM (build 25.171-b10, mixed mode)

You check the Java Software Development Kit (JSDK) with this command:

javac -version

It should return:

javac 1.8.0_171

After verifying the Java and JSDK installation, you can install the Cassandra packages with the following yum command as the …

[Read more]
On RDBMS, NoSQL and NewSQL databases. Interview with John Ryan

“The single most important lesson I’ve learned is to keep it simple. I find designers sometimes deliver over-complex, generic solutions that could (in theory) do anything, but in reality are remarkably difficult to operate, and often misunderstood.”–John Ryan

I have interviewed John Ryan, Data Warehouse Solution Architect (Director) at UBS.

RVZ

Q1. You are an experienced Data Warehouse architect, designer and developer. What are the main lessons you have learned in your career?

John Ryan: The single most important lesson I’ve learned is to keep it simple. I find designers sometimes deliver over-complex, generic solutions that could (in theory) do anything, but in reality are remarkably difficult to operate, and often misunderstood. I believe this stems from a lack of understanding of the …

[Read more]
Continuent Road Map: One year after restart… Where next?

You may know Continuent Tungsten for our highly advanced MySQL replication tool, Tungsten Replicator, and for our state-of-the-art MySQL clustering solution, Tungsten Clustering. Our solutions are used by leading SaaS vendors, e-commerce, financial services and telco customers.

But there are more, many more, Tungsten deployments out there. Tungsten Replicator can be used for real-time data

Cassandra Query Language

After installing Cassandra and reading Cassandra The Definitive Guide, it struck me that I should learn a bit more about the Cassandra Query Language (CQL). So, after I setup a single-node environment and created a .bashcassandra environment file to connect as a student user to the Cassandra instance:

# Add the Java and JRE paths to the $PATH environments.
export set PATH=$PATH:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.45.x86_64:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.45.x86_64/jre

# Add the $JAVA_HOME and $JRE_HOME environment variables.
export set JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.45.x86_64/
export set JRE_HOME=/usr

Having started Cassandra as the cassandra user, I connected to the Cassandra Query Language Shell (cqlsh) …

[Read more]
Showing entries 1 to 10 of 65
10 Older Entries »