docs/CHANGELOG.md: refer to #4563

docs/CHANGELOG.md

@@ -27,7 +27,7 @@ The following `tip` changes can be tested by building VictoriaMetrics components
 * SECURITY: upgrade base docker image (alpine) from 3.18.0 to 3.18.2. See [alpine 3.18.2 release notes](https://alpinelinux.org/posts/Alpine-3.15.9-3.16.6-3.17.4-3.18.2-released.html).
 * SECURITY: upgrade Go builder from Go1.20.5 to Go1.20.6. See [the list of issues addressed in Go1.20.6](https://github.com/golang/go/issues?q=milestone%3AGo1.20.6+label%3ACherryPickApproved).
 
-* FEATURE: reduce memory usage by up to 5x for setups with [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) and long [retention](https://docs.victoriametrics.com/#retention). See [description for this change](https://github.com/VictoriaMetrics/VictoriaMetrics/commit/7094fa38bc207c7bd7330ea8a834310a310ce5e3) for details.
+* FEATURE: reduce memory usage by up to 5x for setups with [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) and long [retention](https://docs.victoriametrics.com/#retention). See [the description for this change](https://github.com/VictoriaMetrics/VictoriaMetrics/commit/7094fa38bc207c7bd7330ea8a834310a310ce5e3) and [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4563) for details.
 * FEATURE: reduce spikes in CPU and disk IO usage during `indexdb` rotation (aka inverted index), which is performed once per [`-retentionPeriod`](https://docs.victoriametrics.com/#retention). The new algorithm gradually pre-populates newly created `indexdb` during the last hour before the rotation. The number of pre-populated series in the newly created `indexdb` can be [monitored](https://docs.victoriametrics.com/#monitoring) via `vm_timeseries_precreated_total` metric. This should resolve [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1401).
 * FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): allow selecting time series matching at least one of multiple `or` filters. For example, `{env="prod",job="a" or env="dev",job="b"}` selects series with either `{env="prod",job="a"}` or `{env="dev",job="b"}` labels. This functionality allows passing the selected series to [rollup functions](https://docs.victoriametrics.com/MetricsQL.html#rollup-functions) without the need to use [subqueries](https://docs.victoriametrics.com/MetricsQL.html#subqueries). See [these docs](https://docs.victoriametrics.com/keyConcepts.html#filtering-by-multiple-or-filters).
 * FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): add ability to preserve metric names for binary operation results via `keep_metric_names` modifier. For example, `({__name__=~"foo|bar"} / 10) keep_metric_names` leaves `foo` and `bar` metric names in division results. See [these docs](https://docs.victoriametrics.com/MetricsQL.html#keep_metric_names). This helps to address issues like [this one](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3710).