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Core Concepts of Sharding Elasticsearch achieves horizontal scalability and fault tolerance through a dual-layer architecture built on shards and replicas. Understanding how data is partitioned and duplicated across cluster nodes is fundamental to deploying robust search infrastructures. A shard functions as an independant Lucene instance that ...

Redis cluster addresses storage limitations by distributing data across multiple master-slave node groups. Unlike sentinel mode, where all nodes store complete datasets, cluster mode partitions data to reduce individual node pressure. Data Partitioning Strategies Hash Modulo Approach This method applies a hash function to keys and uses modulo o ...