/kind improvement
fix: #31272
This pr add more metrics, which are:
- Slow query count, which the duration considered as slow can be
configurable;
- Number of deleted entities;
- Number of entities imported;
- Number of entities per collection;
- Number of loaded entities per collection;
- Number of indexed entities;
- Number of indexed entities, per collection, per index and whether it's
a vetor index;
- Quota states (LongTimeTickDelay, MemoryExhuasted, DiskQuotaExhuasted)
per database;
---------
Signed-off-by: longjiquan <jiquan.long@zilliz.com>
Add a counter monitoring metric for the ratelimited rpc requests with
labels: proxy nodeID, rpc request type, and state.
issue: https://github.com/milvus-io/milvus/issues/30052
Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
