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Performance notes
Oleg V. Kozlyuk edited this page Feb 6, 2020
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Clickhouse.Client uses streaming when reading data (without using extra memory), and parallel batch processing when using BulkCopy.
Streaming is able to saturate 1Gbit/s network uncompressed, and uses around 40-50Mbit/s in compressed mode. Note that complex types (Tuple, Array) may reduce read performance due to extra allocations/boxing