“Hot-Warm” architecture
Blog post from Elastic
The blog post by Samir Bennacer discusses the "Hot-Warm" architecture for Elasticsearch versions 1.x and 2.x, which is tailored for large-scale, time-based data analytics. This architecture involves a tiered structure with three distinct types of nodes: master, hot, and warm nodes. Master nodes are dedicated solely to cluster management tasks, while hot nodes handle indexing and store the most recent, frequently queried indices, requiring high-performance SSD storage. Warm nodes, on the other hand, are optimized for storing older, less frequently accessed read-only data on larger, slower disks. The setup involves tagging nodes as either hot or warm to manage data allocation effectively, with Elasticsearch automatically moving indices to warm nodes as they age, which can be automated using tools like Curator. This approach enhances resource efficiency and ensures optimal performance by offloading older data to less resource-intensive nodes.
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