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--- ubuntu:networking:dns:check_dns_cache [2021/01/13 10:20] – created peter
+++ ubuntu:networking:dns:check_dns_cache [2021/01/13 11:38] (current) – peter
@@ Line 2: / Line 2: @@
 <code bash>
+resolvectl statistics
+or
 systemd-resolve --statistics
 </code>
@@ Line 25: / Line 29: @@
        Indeterminate: 0
 </code>
+<WRAP info>
+**NOTE:**  The **Current Cache Size** is the value you're looking for.
+If it's 0, you just flushed the DNS cache.
+The cache can store up to 4096 DNS responses for up to 2 hours, so don’t expect to see a massive number listed as the current cache size.
+The DNS cache can’t grow to more than 420 kB when used to its fullest; so no concern about memory usage.
+</WRAP>