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Cassandra

An Introductory Guide on Deploying Cassandra Database using Ansible

Creating Cassandra_installation playbookDeploying a Cassandra database manually on hundreds of machines might be a ...

Cassandra

How to tweak the number of num_tokens (vnodes) in live Cassandra cluster

Some clients have asked us to change the number of num_tokens as their requirement changes. For example lower number of ...

Analytics

Spark + Cassandra Best Practices

Spark Overview Spark was created in 2009 as a response to difficulties with map-reduce in Hadoop, particularly in ...

Cassandra

So you have a broken Cassandra SSTable file?

Every few months I have a customer come to me with the following concern: my compactions for one of my Cassandra tables ...

Cassandra

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

In this blog, I’m going to give a detailed guide on how to monitor a Cassandra cluster with Prometheus and Grafana. For ...

Cassandra

The things I hate about Apache Cassandra

Intro First, let me start by saying I do not hate Cassandra. I love Cassandra. In its place, Cassandra is a powerful ...

Cassandra

Kong: an intro to API gateways

Introduction While working on a few tasks in the past few weeks, I faced a problem that involved setting a "filter" for ...

Cassandra

Incremental Repair: Problems and a Solution

Because incremental repairs can significantly reduce the time and IO cost of performing a repair, they can seem like a ...

Cassandra

How to migrate data from Cassandra to Elassandra in Docker containers

A client recently asked us to migrate a Cassandra cluster running in Docker containers to Elassandra, with the data ...

Cassandra

Backup strategies in Cassandra

Apache Cassandra

Caution: Using AutoUpgrade with Multiple Databases from the Same ORACLE_HOME

Here's a short and sweet post. "In Deploy mode, AutoUpgrade also confirms that the upgrade has succeeded, and moves ...

Cassandra

Cassandra information using nodetool

Cassandra nodetool provides several types of commands to manage your Cassandra cluster. See my previous post about ...

Cassandra

How to build your very own Cassandra 4.0 release

Over the last few months, I have been seeing references to Cassandra 4.0 and some of its new features. When that ...

Cassandra

Cassandra Vulnerability - CVE-2020-13946 - Apache Cassandra RMI Rebind Vulnerability

On September 1, 2020, Apache disclosed a security vulnerability for Apache Cassandra. Summary: It's possible for a ...

Cassandra

Cassandra CQL cheatsheet

Context: Every now and then I find myself looking for a couple of commands I do often. In some other ...

Cassandra

Lightweight transactions in Cassandra

Cassandra support for transactions Unlike commonly used relational database platforms, Cassandra does not support ACID ...

Cassandra

Listener over Infiniband on Exadata (part 1)

Cassandra

Cassandra backups using nodetool

Cassandra nodetool provides several types of commands to manage your Cassandra cluster. See my previous posts for an ...

Cassandra

Examining the lifecycle of tombstones in Apache Cassandra

This post is the first part of a series of blog posts regarding the lifecycle and management of tombstones. Deleting ...

Cassandra

How to Perform (UDC) User-Defined Compactions in Cassandra

User-defined compactions allow us to manually select which files should be compacted. This enables us to reclaim space ...

Cassandra

Let’s deal with high read latencies in Cassandra

High latency values may indicate a cluster at the edge of its processing capacity, issues with the data model—such as ...

Cassandra

Change Your system_auth Replication Factor in Cassandra

Occasionally, clients reach out to us with authentication issues when a node is down. While this scenario shouldn’t ...

Cassandra

Mitigating the Problems Created by Tombstones

Got too many tombstones? This blog post will talk about how to deal with tombstones once you already have them. For ...

Cassandra

Cassandra for beginners: Replication

This post is the continuation of the previous post, Cassandra 101: Understanding What Cassandra Is, in which I’ll ...

Cassandra

Why your Cassandra cluster scales poorly

Apache Cassandra promises linear scalability and workload distribution, among many other features—and rightly so. ...

Cassandra

Batch Operations in Apache Cassandra

Batches are one of the most misunderstood features of Apache Cassandra. They rarely improve performance. In fact, while ...

Cassandra

Replacing Nodes in Cassandra

One of the many things to love about Cassandra is how operationally simple it is to add, remove or even replace nodes ...

Cassandra

Cassandra consistency level guide

When I started learning Cassandra, I noticed some concepts were not well explained, and it might be helpful for ...

Cassandra

Useful CQLSH Commands for Everyday Use

Introduction Cassandra is an open-source NoSQL distributed database used for processing large volumes of data with high ...

Cassandra

How to Deploy Spark in DataStax Cassandra 5.1

Spark is an open-source, distributed processing system used to manage big data workloads. Spark uses in-memory caching ...

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An Introductory Guide on Deploying Cassandra Database using Ansible

How to tweak the number of num_tokens (vnodes) in live Cassandra cluster

Spark + Cassandra Best Practices

So you have a broken Cassandra SSTable file?

Step-by-bstep monitoring Cassandra with with Prometheus and Grafana

The things I hate about Apache Cassandra

Kong: an intro to API gateways

Incremental Repair: Problems and a Solution

How to migrate data from Cassandra to Elassandra in Docker containers

Backup strategies in Cassandra

Caution: Using AutoUpgrade with Multiple Databases from the Same ORACLE_HOME

Cassandra information using nodetool

How to build your very own Cassandra 4.0 release

Cassandra Vulnerability - CVE-2020-13946 - Apache Cassandra RMI Rebind Vulnerability

Cassandra CQL cheatsheet

Lightweight transactions in Cassandra

Listener over Infiniband on Exadata (part 1)

Cassandra backups using nodetool

Examining the lifecycle of tombstones in Apache Cassandra

How to Perform (UDC) User-Defined Compactions in Cassandra

Let’s deal with high read latencies in Cassandra

Change Your system_auth Replication Factor in Cassandra

Mitigating the Problems Created by Tombstones

Cassandra for beginners: Replication

Why your Cassandra cluster scales poorly

Batch Operations in Apache Cassandra

Replacing Nodes in Cassandra

Cassandra consistency level guide

Useful CQLSH Commands for Everyday Use

How to Deploy Spark in DataStax Cassandra 5.1

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