Terminology
- Node = An Elasticsearch process. It's recommended to run each node on a separate server.
- Cluster = Set of one or more nodes.
- Shard = Part of an index, used for distributing data across the cluster.
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📖 Elasticsearch in Action
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Shards
Elasticsearch divides each index into shards, which are standalone Lucene indices. These can be either primary shards or replicas.
The number of shards and replicas per shard is set when a new index is created. After that, Elasticsearch takes care of evenly distrib...
You heard about Load-Balancers, Docker Swarm does it Better
Just like a manager of a shipping company has to pick which ship is best used for caring a container, a Manager node ensures that container workloads are assigned to run on the most appropriate Worker node for optimal efficienc...
Performance
- Fast full-text search - Because it's built on top of Lucene
- Near real-time indexing - It takes under 1s for newly indexed documents to show up in searches
- High performance & Fault tolerance - Each index is split into shards, ...
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