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ClickHouse® is a real-time analytics DBMS
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Default settings are not very efficient, since they do not even reuse connections. And when each query requires connection you can have only ~80 QPS, while by simply enabling connection reuse (connection_auto_close=false) you can have ~500 QPS (and by increasing connection_pool_size you can have better QPS throughput). So this patch allows to pass through some connection related settings for the StorageMySQL engine, like: - connection_pool_size=16 - connection_max_tries=3 - connection_auto_close=true v2: remove connection_pool_default_size v3: remove num_tries_on_connection_loss |
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ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real time.
Useful Links
- Official website has quick high-level overview of ClickHouse on main page.
- Tutorial shows how to set up and query small ClickHouse cluster.
- Documentation provides more in-depth information.
- YouTube channel has a lot of content about ClickHouse in video format.
- Slack and Telegram allow to chat with ClickHouse users in real-time.
- Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
- Code Browser with syntax highlight and navigation.
- Contacts can help to get your questions answered if there are any.
- You can also fill this form to meet Yandex ClickHouse team in person.