cluster

Astronomers Use Massive Galaxy Cluster to ‘Peer Back in Time’

Astronomers recently used a giant cluster of galaxies as an X-ray magnifying lens to spot a tiny, star-forming dwarf galaxy for the first time. The team, which was able to “peer back in time” to approximately 9.4 billion years ago, detected the tiny dwarf galaxy, which was experiencing its first, high-energy stages of star formation, …

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Setting Up a Cassandra Cluster With SSL

This is part 2 of a Cassandra Cluster Tutorial series. Part 1 used Vagrant to setup a local Cassandra Cluster and installs Cassandra on boxes.  Part 2 installs Cassandra Database SSL support and configures Cassandra nodes with SSL. Later parts of this Cassandra Cluster tutorial series will setup Ansible/ssh for DevOps/DBA tasks, use Packer to create EC2 AMIs and instances, and …

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How to Choose Topics for an SEO Cluster Strategy

Topic clusters are a strategy for search engine optimization and content marketing. The approach — organizing a site’s content around topics and subtopics — can be effective if you choose the right clusters. “Years ago, people posed fragmented keyword queries to search engines to find answers to their questions. Nowadays, most are comfortable posing complex …

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