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< ALL BLOG POSTS
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Reducing Costs and Enhancing Capabilities: Why Apache Cassandra 5.0 Should Be Your Next Upgrade
Trie memtables, Storage Attached Indexes and Unified Compaction Strategy: why Apache Cassandra 5.0 cuts costs and adds capability worth upgrading for.
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Kafka Installation and Security with Ansible - Topics, SASL and ACLs
This blog shows you how and provides a fully working Ansible project on Github to install Kafka and manage its security.
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Apache Pulsar standalone usage and basic topics
Run Apache Pulsar as a standalone cluster to learn the basics, and explore its topic options following our Kafka and Pulsar comparison.
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Deploying PostgreSQL for High Availability with Patroni, etcd and HAProxy - Part 2
Part 2 of deploying PostgreSQL for high availability: configuring Patroni, PostgreSQL and HAProxy on top of a running etcd cluster.
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Ansible Versioning
How to manage Ansible projects with version control: approaches to versioning playbooks and roles, and handling dependencies across projects.
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Deploying PostgreSQL for High Availability with Patroni, etcd and HAProxy - Part 1
Part 1 of deploying PostgreSQL for high availability with Patroni, etcd and HAProxy: an overview, plus OS, network and etcd cluster setup.
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Apache Kafka vs Apache Pulsar
This blog describes some of the main differences between Apache Kafka and Pulsar - two of the leading data streaming Apache projects.
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Apache Kafka and Regulatory Compliance
How Kafka can help meet regulatory standards and compliance when used as an event broker to Security Information and Event Management (SIEM) systems.
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ECS Container monitoring using cAdvisor
How to monitor Docker containers on an AWS ECS cluster with cAdvisor when CloudWatch isn't enough, from deployment to collecting container metrics.
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Incremental backups with rsync and hard links
Build a simple incremental backup with rsync and hard links: the options that control what is copied, linked or deleted, with working examples.
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Cassandra with AxonOps on Kubernetes
How to deploy Apache Cassandra on Kubernetes with AxonOps management tool. AxonOps provides the GUI management for the Cassandra cluster.
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Ansible: Variables scope and precedence
Ansible variable scope and precedence can surprise you. A real scenario where a playbook picked an unexpected value, and how to predict which wins.
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Confirming Kafka Topic Time Based Retention Policies
Create a Kafka topic, change its retention policy with the command-line tools, and confirm messages are retained and deleted as expected.
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An Interesting Behaviour Observed with Cassandra Concurrent Compaction
Concurrent compaction behaved unexpectedly on a Cassandra IoT time series table with a short TTL. What we observed and why it happened.
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Kafka Connect gotcha - SSL
Unexpected out-of-memory errors in Kafka Connect over SSL? Configure SSL separately for internal connections, consumers and producers.
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Using Molecule to Test Ansible Roles
This blog looks at how to use Molecule to test roles in isolation, as no one is perfect and we all make mistakes but many can be avoid with careful planning.
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Simple tips for securing Cassandra
This blog outlines some good practices that can help you secure your Apache Cassandra clusters.
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