dnsdist: Add TCP management options from rfc7766 section 10

[thirdparty/pdns.git] / pdns / README-dnsdist.md

diff --git a/pdns/README-dnsdist.md b/pdns/README-dnsdist.md
index b9521c2984eeda6f184f936f80906b3bf2fe040d..f90459ea36870fd5c903368360c16afe9288a6f4 100644 (file)
--- a/pdns/README-dnsdist.md
+++ b/pdns/README-dnsdist.md
@@ -880,7 +880,7 @@ getPool("poolname"):getCache():printStats()
 ```
 
 Expired cached entries can be removed from a cache using the `purgeExpired(n)`
-method, which will remove expired entries from the cache until at least `n`
+method, which will remove expired entries from the cache until at most `n`
 entries remain in the cache. For example, to remove all expired entries:
 
 ```
@@ -1488,9 +1488,13 @@ instantiate a server with additional parameters
         * member `add(DNSName)`: add this DNSName to the node
  * Tuning related:
     * `setMaxTCPClientThreads(n)`: set the maximum of TCP client threads, handling TCP connections
+    * `setMaxTCPConnectionDuration(n)`: set the maximum duration of an incoming TCP connection, in seconds. 0 (the default) means unlimited
+    * `setMaxTCPConnectionsPerClient(n)`: set the maximum number of TCP connections per client. 0 (the default) means unlimited
+    * `setMaxTCPQueriesPerConnection(n)`: set the maximum number of queries in an incoming TCP connection. 0 (the default) means unlimited
     * `setMaxTCPQueuedConnections(n)`: set the maximum number of TCP connections queued (waiting to be picked up by a client thread), defaults to 1000. 0 means unlimited
     * `setMaxUDPOutstanding(n)`: set the maximum number of outstanding UDP queries to a given backend server. This can only be set at configuration time and defaults to 10240
     * `setCacheCleaningDelay(n)`: set the interval in seconds between two runs of the cache cleaning algorithm, removing expired entries
+    * `setCacheCleaningPercentage(n)`: set the percentage of the cache that the cache cleaning algorithm will try to free by removing expired entries. By default (100), all expired entries are removed
     * `setStaleCacheEntriesTTL(n)`: allows using cache entries expired for at most `n` seconds when no backend available to answer for a query
     * `setTCPRecvTimeout(n)`: set the read timeout on TCP connections from the client, in seconds
     * `setTCPSendTimeout(n)`: set the write timeout on TCP connections from the client, in seconds