Elasticsearch 7.0.0 released

Elasticsearch 7.0.0, based on Lucene 8.0.0, introduces significant enhancements in speed, scalability, and usability, positioning it as the most efficient and resilient version to date. Key improvements include performance enhancements for search and indexing, such as faster top k retrieval and adaptive replica selection, which optimizes query speed and search throughput. The new version also simplifies cluster coordination, improves memory management with a real-memory circuit breaker, and reduces oversharding by defaulting to one shard per index. Usability is enhanced with bundled Java, JSON logging, and a feature-complete high-level REST client for Java. Additionally, Elasticsearch 7.0.0 supports cross-cluster replication by default and introduces new field types and query capabilities, such as nanosecond timestamps and intervals queries, to broaden its application scope and improve user experience.

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