diff --git a/app/vmgateway/README.md b/app/vmgateway/README.md
index 3a86c9a130..1d165b1b86 100644
--- a/app/vmgateway/README.md
+++ b/app/vmgateway/README.md
@@ -363,8 +363,12 @@ The shortlist of configuration flags include the following:
      TCP address to listen for http connections. See also -httpListenAddr.useProxyProtocol (default ":8431")
   -httpListenAddr.useProxyProtocol
      Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
+  -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 300)
+     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)
   -loggerDisableTimestamps
      Whether to disable writing timestamps in logs
   -loggerErrorsPerSecondLimit int
diff --git a/docs/vmgateway.md b/docs/vmgateway.md
index b3a0535393..946a85c6f5 100644
--- a/docs/vmgateway.md
+++ b/docs/vmgateway.md
@@ -374,8 +374,12 @@ The shortlist of configuration flags include the following:
      TCP address to listen for http connections. See also -httpListenAddr.useProxyProtocol (default ":8431")
   -httpListenAddr.useProxyProtocol
      Whether to use proxy protocol for connections accepted at -httpListenAddr . See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
+  -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 300)
+     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)
   -loggerDisableTimestamps
      Whether to disable writing timestamps in logs
   -loggerErrorsPerSecondLimit int