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[docs](docs) 2.0 sidebar review (apache#504)
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KassieZ authored Apr 2, 2024
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2 changes: 1 addition & 1 deletion blog/variant-in-apache-doris-2.1.md
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'summary': 'Doris 2.1.0 provides a new data type: Variant, for semi-structured data analysis, which enables 8 times faster query performance than JSON with one-third storage space.',
'date': '2024-03-26',
'author': 'Apache Doris',
'tags': ['Release Notes'],
'tags': ['Tech Sharing'],
'picked': "true",
'order': "1",
"image": '/images/variant-in-apache-doris-2.1.png'
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---
{
"title": "LDAP 打通",
"title": "基于 LDAP 的用户认证",
"language": "zh-CN"
}
---
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---
{
"title": "部署 Docker 集群",
"title": "Docker 部署",
"language": "zh-CN"
}
---
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---
{
"title": "Max Compute",
"title": "MaxCompute",
"language": "zh-CN"
}
---
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{
"title": "文件缓存",
"title": "数据缓存",
"language": "zh-CN"
}
---
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文件缓存 (File Cache) 通过缓存最近访问的远端存储系统 (HDFS 或对象存储) 的数据文件,加速后续访问相同数据的查询。在频繁访问相同数据的查询场景中,File Cache 可以避免重复的远端数据访问开销,提升热点数据的查询分析性能和稳定性。
数据缓存 (File Cache) 通过缓存最近访问的远端存储系统 (HDFS 或对象存储) 的数据文件,加速后续访问相同数据的查询。在频繁访问相同数据的查询场景中,File Cache 可以避免重复的远端数据访问开销,提升热点数据的查询分析性能和稳定性。

## 原理

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{
"title": "SQL 方言兼容",
"title": "SQL 方言支持",
"language": "zh-CN"
}
---
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{
"title": "使用 HLL 近似去重",
"title": "HLL 近似去重",
"language": "zh-CN"
}
---
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{
"title": "Doris Join 优化原理",
"title": "Join 优化原理",
"language": "zh-CN"
}

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{
"title": "远程 UDF",
"title": "Remote UDF",
"language": "zh-CN"
}
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under the License.
-->

## 远程 UDF
## Remote UDF

Remote UDF Service 支持通过 RPC 的方式访问用户提供的 UDF Service,以实现用户自定义函数的执行。相比于 Native 的 UDF 实现,Remote UDF Service 有如下优势和限制:

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-->

:::tip
异步物化视图功能,在 Doris 2.1 发布,请参考 Doris 2.1 版本文档。
异步物化视图功能,在 Doris 2.1 发布,请参考 [Doris 2.1 版本文档](https://doris.apache.org/zh-CN/docs/query-acceleration/async-materialized-view/)
:::
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{
"title": "Export Data or Table Structure with MYSQLDUMP ",
"title": "Export Data or Table Structure with MySQL Dump ",
"language": "en"
}
---
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-->

:::tip
The asynchronous materialized view feature is released in Doris 2.1, see Doris 2.1 documentation.
The asynchronous materialized view feature is released in Doris 2.1, see [Doris 2.1 documentation](https://doris.apache.org/docs/query-acceleration/async-materialized-view/).
:::

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