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docs/CHANGELOG.md: document 110c3896e7

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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3600
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@ -19,11 +19,13 @@ The following tip changes can be tested by building VictoriaMetrics components f
* SECURITY: upgrade Go builder from Go1.20.0 to Go1.20.1. See [the list of issues addressed in Go1.20.1](https://github.com/golang/go/issues?q=milestone%3AGo1.20.1+label%3ACherryPickApproved).
* FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add support for [VictoriaMetrics remote write protocol](https://docs.victoriametrics.com/vmagent.html#victoriametrics-remote-write-protocol). This protocol allows saving egress network bandwidth costs when sending data from `vmagent` to VictoriaMetrics located in another datacenter or availability zone. This also allows reducing disk IO under high load when `vmagent` starts queuing the collected data to disk when the remote storage is temporarily unavailable or cannot keep up with the data ingestion rate. See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1225).
* FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add `kuma_sd_config` for [Kuma](http://kuma.io/) Control Plane targets discovery. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3389).
* FEATURE: [vmgateway](https://docs.victoriametrics.com/vmgateway.html): add the ability to verify JWT signature via [JWKS endpoint](https://auth0.com/docs/secure/tokens/json-web-tokens/json-web-key-sets). See [these docs](https://docs.victoriametrics.com/vmgateway.html#using-jwks-endpoint-for-jwt-signature-verification).
* FEATURE: [vmauth](https://docs.victoriametrics.com/vmauth.html): add the ability to limit the number of concurrent requests on a per-user basis via `-maxConcurrentPerUserRequests` command-line flag and via `max_concurrent_requests` config option. See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3346) and [these docs](https://docs.victoriametrics.com/vmauth.html#concurrency-limiting).
* FEATURE: [vmauth](https://docs.victoriametrics.com/vmauth.html): automatically retry failing `GET` requests on all [the configured backends](https://docs.victoriametrics.com/vmauth.html#load-balancing). Previously the backend error has been immediately returned to the client without retrying the request on the remaining backends.
* FEATURE: [vmauth](https://docs.victoriametrics.com/vmauth.html): choose the backend with the minimum number of concurrently executed requests [among the configured backends](https://docs.victoriametrics.com/vmauth.html#load-balancing) in a round-robin manner for serving the incoming requests. This allows spreading the load among backends more evenly, while improving the response time.
* FEATURE: [vmalert enterprise](https://docs.victoriametrics.com/vmalert.html): add ability to read alerting and recording rules from S3, GCS or S3-compatible object storage. See [these docs](https://docs.victoriametrics.com/vmalert.html#reading-rules-from-object-storage).
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): automatically retry requests to remote storage if up to 5 errors occur during the data migration process. This should help continuing the data migration process on temporary errors. Previously `vmctl` was stopping after the first error. See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3600).
* FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): add [share(q)](https://docs.victoriametrics.com/MetricsQL.html#share) aggregate function.
* FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): add `mad_over_time(m[d])` function for calculating the [median absolute deviation](https://en.wikipedia.org/wiki/Median_absolute_deviation) over raw samples on the lookbehind window `d`. See [this feature request](https://github.com/prometheus/prometheus/issues/5514).
* FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): add `range_mad(q)` function for calculating the [median absolute deviation](https://en.wikipedia.org/wiki/Median_absolute_deviation) over points per each time series returned by `q`.
@ -32,7 +34,6 @@ The following tip changes can be tested by building VictoriaMetrics components f
* FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): add `range_trim_zscore(z, q)` function for dropping outliers located farther than `z*range_stddev(q)` from `range_avg(q)`. This should help removing outliers during query time at [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3759).
* FEATURE: [vmui](https://docs.victoriametrics.com/#vmui): show `median` instead of `avg` in graph tooltip and line legend, since `median` is more tolerant against spikes. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3706).
* FEATURE: allow setting zero value for `-search.latencyOffset` command-line flag. This may be needed in [some cases](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2061#issuecomment-1299109836). Previously the minimum supported value for `-search.latencyOffset` command-line flag was `1s`.
* FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): add `kuma_sd_config` for [Kuma](http://kuma.io/) Control Plane targets discovery. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3389).
* BUGFIX: prevent from possible data ingestion slowdown and query performance slowdown during [background merges of big parts](https://docs.victoriametrics.com/#storage) on systems with small number of CPU cores (1 or 2 CPU cores). The issue has been introduced in [v1.85.0](https://docs.victoriametrics.com/CHANGELOG.html#v1850) when implementing [this feature](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3337). See also [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3790).
* BUGFIX: properly parse timestamps in milliseconds when [ingesting data via OpenTSDB telnet put protocol](https://docs.victoriametrics.com/#sending-data-via-telnet-put-protocol). Previously timestamps in milliseconds were mistakenly multiplied by 1000. Thanks to @Droxenator for the [pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3810).