Elasticsearch

How does Elasticsearch handle real-time data indexing?

The question is about Elasticsearch .

Answer:
Elasticsearch achieves near-real-time indexing by writing documents to an in-memory buffer refreshed into a searchable segment every 1 second by default. Indexed documents become searchable within 1–2 seconds without requiring a full segment flush to disk. Setting the refresh interval to -1 during bulk indexing significantly improves throughput, with a manual refresh triggered after the bulk operation completes.

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English
B2

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