f41gh7 5a587f2006 app/{vmstorage,vmselect,vminsert}: introduce metrics metadata storage ...

This commits adds storage part and cluster RPC methods for metrics metadata.

 Key concepts:
* vmstorage persists metadata in-memory only.
* vmstorage evicts metadata records older than 1 hour.
* vmstorage stores only the last value of metadata for time series
  metric name.
* vminsert opens an additional TCP connection to the vmstorage for
  metadata write requests.
* vmselect doesn't support `limit_per_metric_name`.

This feature is available optional and must be enabled via flag - `-enableMetadata` provided to vminsert/vmsingle.

Fixes github.com/VictoriaMetrics/VictoriaMetrics/issues/2974

2025-11-14 10:24:38 +01:00

..

request_handler.go

app/{vmstorage,vmselect,vminsert}: introduce metrics metadata storage

2025-11-14 10:24:38 +01:00