fix: improve ttbr histogram metric description
@@ -101,8 +101,9 @@ impl<I, O> SequencedStreamHandler<I, O> {
let time_to_be_readable = metrics
.register_metric::<DurationHistogram>(
"ingester_ttbr",
- "distribution of duration between producer writing \
- to consumer putting into queryable cache",
+ "distribution of duration of Time To Become Readable (TTBR), the \
+ time between write to a router and becoming readable \
+ for query in the ingester",
)
.recorder(metric_attrs(shard_index, &topic_name, None, false));
