Apache Cassandra is a rock-solid choice for managing IoT and time series data at scale. The most popular use case of storing, querying and analyzing time series generated by IoT devices in Cassandra is well-understood and documented. In general, a time series is stored and queried based on its source IoT device. However, there exists another class of IoT applications that require quick access to the most recent data generated by a collection of IoT devices based on a known state. The question that such applications need to answer is: Which IoT devices or sensors are currently reporting a specific state? In this blog post, we focus on this question and provide five possible data modeling solutions to efficiently answer it in Cassandra.
Alongside stability, Apache Cassandra 4.0 stands out for its ability to scale operations faster, its new auditing capabilities, and the way it embraces privacy by design. In this article, we’ll cover the new features and walk you through the steps required to upgrade to Cassandra 4.0.
Reaper is an open source tool written in Java and built with Dropwizard to schedule and orchestrate repairs of Apache Cassandra clusters. It was built to address those issues and make repairs as safe and reliable as possible. Get started, install Reaper and stop worrying about repairs!
With Apache Cassandra 4.0, you not only get the direct improvements to performance added by the Apache Cassandra committers, you also unlock the ability to take advantage of seven years of improvements in the JVM itself. This article focuses on improvements in Java garbage collection that Cassandra 4.0 coupled with Java 16 offers over Cassandra 3.11 on Java 8.
Over the past twenty years, there have been several big trends in distributed computing. Today, we have more developers using microservices designs to decompose applications into smaller and more manageable units. Apache Cassandra was built for cloud data and is now becoming the choice of developers for cloud native applications.
DataStax Astra is a database-as-a-service for Apache Cassandra. It is designed to make it easier for developers to get started working with the database and comes with a free tier. We spoke to Ed Anuff, Chief Product Officer at DataStax, to find out more.
Every Monday, we take a step back and look at all the cool stuff that went down during the previous week. Last week we learned about Jabel, which lets developers write Java 12+ syntax in Java 8, got some insights into the current R language trends, a new version of Golang and much more. Let’s take a look.
Apache Cassandra is a database that offers high availability and massive scalability. In this tutorial, Scott Hendrickson, Cloud Architect Team Lead, at DataStax shows you how to get started using Apache Cassandra. Find out how to create a service for a video recommendation application as a starting point for learning more about how Apache Cassandra works.
Dealing with response times in Apache Cassandra can be tricky. In this article, Instaclustr’s Alex Lourie looks at speculative queries and three use cases where the potential benefits are hard to ignore.
Developers run the world – but how well-paid are they for that? Today, we are digging into the 2019 Dice Tech Salary Report to find out which technologies are the highest earners, job satisfaction among developers and more.
No need to reinvent the wheel – Apache Cassandra has just released its own LDAP authenticator for integration into this popular NoSQL database. Kurt Greaves explains how developers can implement this open source plug-in for their own projects.
Apache Cassandra is turning 10! It’s become a top-level Apache Software Foundation project as a database used by thousands of developers ever since it debuted a decade ago, To celebrate, we’re testing your knowledge of this popular database.
Materialised views, a new storage engine and more – Apache Cassandra project chair Jonathan Ellis takes us on a tour of the highlights in the latest Cassandra release. Cassandra has grown from a crowd of early-adopting users into the market majority.
It’s the battle of the databases – Apache Cassandra comes out on top in both throughput and latency tests. Other popular NoSQL names like HBase, Couchbase and MongoDB all faltered somewhere along the line.