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# varnish

Module uses the `varnishstat` command to provide varnish cache statistics.

It produces:

1.  **Connections Statistics** in connections/s

    -   accepted
    -   dropped

2.  **Client Requests** in requests/s

    -   received

3.  **All History Hit Rate Ratio** in percent

    -   hit
    -   miss
    -   hitpass

4.  **Current Poll Hit Rate Ratio** in percent

    -   hit
    -   miss
    -   hitpass

5.  **Expired Objects** in expired/s

    -   objects

6.  **Least Recently Used Nuked Objects** in nuked/s

    -   objects

7.  **Number Of Threads In All Pools** in threads

    -   threads

8.  **Threads Statistics** in threads/s

    -   created
    -   failed
    -   limited

9.  **Current Queue Length** in requests

    -   in queue

10. **Backend Connections Statistics** in connections/s

    -   successful
    -   unhealthy
    -   reused
    -   closed
    -   resycled
    -   failed

11. **Requests To The Backend** in requests/s

    -   received

12. **ESI Statistics** in problems/s

    -   errors
    -   warnings

13. **Memory Usage** in MB

    -   free
    -   allocated

14. **Uptime** in seconds

    -   uptime

## configuration

Only one parameter is supported:

```yaml
instance_name: 'name'
```

The name of the varnishd instance to get logs from. If not specified, the host name is used.

---

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