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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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