# 流量捕获

## `[flowlog]`

本地流量捕获免费可用，用于记录流量诊断；它不是 IPFIX 远程导出器，也不是 HTTP 正文录制。

| 键 | 默认值 | 范围 |
|---|---|---|
| `enabled` | `false` | 布尔值 |
| `sampling-interval` | `1` | 1–1000000 |
| `active-timeout-seconds` | `5` | 1–3600 |
| `tcp-idle-timeout-seconds` | `120` | 2–86400 |
| `udp-idle-timeout-seconds` | `30` | 2–3600 |
| `fin-grace-seconds` | `5` | 1–300 |
| `max-flows-per-worker` | `4096` | 1–16384 |
| `capture-duration-seconds` | `0` | 0–86400；0 表示不限时长 |
| `retention-hours` | `24` | 1–720 |
| `max-database-rows` | `100000` | 1000–1000000 |

```ini
[flowlog]
enabled=true
sampling-interval=1
retention-hours=24
```