docs/vmauth.md: update -help output

app/vmauth/README.md

@@ -342,7 +342,7 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -auth.config string
      Path to auth config. It can point either to local file or to http url. See https://docs.victoriametrics.com/vmauth.html for details on the format of this auth config
   -configCheckInterval duration
-     Interval for config file re-read. Zero value disables config re-reading. By default, refreshing is disabled, send SIGHUP for config refresh.
+     interval for config file re-read. Zero value disables config re-reading. By default, refreshing is disabled, send SIGHUP for config refresh.
   -enableTCP6
      Whether to enable IPv6 for listening and dialing. By default, only IPv4 TCP and UDP is used
   -envflag.enable
@@ -374,9 +374,13 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -httpListenAddr string
      TCP address to listen for http connections. See also -httpListenAddr.useProxyProtocol (default ":8427")
   -httpListenAddr.useProxyProtocol
-     Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
+     Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt . With enabled proxy protocol http server cannot serve regular /metrics endpoint. Use -pushmetrics.url for metrics pushing
+  -internStringCacheExpireDuration duration
+     The expiry duration for caches for interned strings. See https://en.wikipedia.org/wiki/String_interning . See also -internStringMaxLen and -internStringDisableCache (default 6m0s)
+  -internStringDisableCache
+     Whether to disable caches for interned strings. This may reduce memory usage at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringCacheExpireDuration and -internStringMaxLen
   -internStringMaxLen int
-     The maximum length for strings to intern. Lower limit may save memory at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning (default 500)
+     The maximum length for strings to intern. Lower limit may save memory at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringDisableCache and -internStringCacheExpireDuration (default 500)
   -logInvalidAuthTokens
      Whether to log requests with invalid auth tokens. Such requests are always counted at vmauth_http_request_errors_total{reason="invalid_auth_token"} metric, which is exposed at /metrics page
   -loggerDisableTimestamps
@@ -416,7 +420,7 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -pushmetrics.interval duration
      Interval for pushing metrics to -pushmetrics.url (default 10s)
   -pushmetrics.url array
-     Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default metrics exposed at /metrics page aren't pushed to any remote storage
+     Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default, metrics exposed at /metrics page aren't pushed to any remote storage
      Supports an array of values separated by comma or specified via multiple flags.
   -reloadAuthKey string
      Auth key for /-/reload http endpoint. It must be passed as authKey=...

docs/vmauth.md

@@ -353,7 +353,7 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -auth.config string
      Path to auth config. It can point either to local file or to http url. See https://docs.victoriametrics.com/vmauth.html for details on the format of this auth config
   -configCheckInterval duration
-     Interval for config file re-read. Zero value disables config re-reading. By default, refreshing is disabled, send SIGHUP for config refresh.
+     interval for config file re-read. Zero value disables config re-reading. By default, refreshing is disabled, send SIGHUP for config refresh.
   -enableTCP6
      Whether to enable IPv6 for listening and dialing. By default, only IPv4 TCP and UDP is used
   -envflag.enable
@@ -385,9 +385,13 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -httpListenAddr string
      TCP address to listen for http connections. See also -httpListenAddr.useProxyProtocol (default ":8427")
   -httpListenAddr.useProxyProtocol
-     Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
+     Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt . With enabled proxy protocol http server cannot serve regular /metrics endpoint. Use -pushmetrics.url for metrics pushing
+  -internStringCacheExpireDuration duration
+     The expiry duration for caches for interned strings. See https://en.wikipedia.org/wiki/String_interning . See also -internStringMaxLen and -internStringDisableCache (default 6m0s)
+  -internStringDisableCache
+     Whether to disable caches for interned strings. This may reduce memory usage at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringCacheExpireDuration and -internStringMaxLen
   -internStringMaxLen int
-     The maximum length for strings to intern. Lower limit may save memory at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning (default 500)
+     The maximum length for strings to intern. Lower limit may save memory at the cost of higher CPU usage. See https://en.wikipedia.org/wiki/String_interning . See also -internStringDisableCache and -internStringCacheExpireDuration (default 500)
   -logInvalidAuthTokens
      Whether to log requests with invalid auth tokens. Such requests are always counted at vmauth_http_request_errors_total{reason="invalid_auth_token"} metric, which is exposed at /metrics page
   -loggerDisableTimestamps
@@ -427,7 +431,7 @@ See the docs at https://docs.victoriametrics.com/vmauth.html .
   -pushmetrics.interval duration
      Interval for pushing metrics to -pushmetrics.url (default 10s)
   -pushmetrics.url array
-     Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default metrics exposed at /metrics page aren't pushed to any remote storage
+     Optional URL to push metrics exposed at /metrics page. See https://docs.victoriametrics.com/#push-metrics . By default, metrics exposed at /metrics page aren't pushed to any remote storage
      Supports an array of values separated by comma or specified via multiple flags.
   -reloadAuthKey string
      Auth key for /-/reload http endpoint. It must be passed as authKey=...