http-libs
HTTP cache metrics
The handler emits counters via System.Diagnostics.Metrics under the meter
DamianH.HttpHybridCacheHandler:
| Counter | Description |
|---|---|
cache.hits |
Hits: fresh, revalidated, stale-while-revalidate, and stale-if-error |
cache.misses |
Misses, including cache errors and failed revalidations |
cache.stale |
Stale entries served via stale-while-revalidate or stale-if-error |
cache.size_exceeded |
Responses exceeding MaxCacheableContentSize that were not cached |
All counters include these tags, following OpenTelemetry semantic conventions:
| Tag | Description | Example |
|---|---|---|
http.request.method |
HTTP method | GET, HEAD |
url.scheme |
URL scheme | http, https |
server.address |
Server hostname | api.example.com |
server.port |
Server port | 443 |
For per-response information, enable diagnostic headers.