Li Zhuofeng

Draft: [agent] support write l7 flow log to file

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### This PR is for: - Agent ### support write l7 flow log to file， when collector socker type is set FILE #### Checklist - [x] test. #### Backport to...

### This PR is for:

The IPv4 type is based on UInt32, and Clickhouse supports direct insertion using the UInt32 type, so that it does not need to be converted to net.IP, and the insertion...

### This PR is for: - Server

### This PR is for: - Server

Can the features of Query Cache support subqueries?

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I see that the feature of Query Cache has been completed I tried it, and it supports the result cache of the entire statement, but does not support the result...

### This PR is for: - Server #### Affected branches - main - v6.5

当前优化效果不明显，pool 多线程读写有10%左右提升。后续继续优化 ### This PR is for: - Server

支持过滤 profile的数据返回 - 支持 total-value-percent：默认值 0.1 和 depth 默认值 12 - total-value 占比小于 0.1% 且 节点层级大于 12 的才忽略 - 目前对于off-cpu 可以减少 50%的显示数据，提高近50%性能 - 如果 把 total-value-percent 调大， depth 调小，可丢弃更多节点，加载更快 ###...

请问下查询时，server怎么选择 vm-default 执行

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请问下查询时，server怎么选择 vm-default 执行？ ## Question 例如有 4 个 vm-default, 这时server 同时收到 4个 查询请求， 这时4个查询请求会不会都选择同一个 vm-default 执行？ 有没有配置，可以轮询或随机选择 vm-default 执行？