davidradl commented on code in PR #27509:
URL: https://github.com/apache/flink/pull/27509#discussion_r2758274855


##########
flink-core/src/main/java/org/apache/flink/configuration/WebOptions.java:
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@@ -148,6 +148,26 @@ public class WebOptions {
                     .defaultValue(Duration.ofMillis(10L * 60L * 1000L))
                     .withDescription("Timeout for asynchronous operations by 
the web monitor.");
 
+    /**
+     * Time-to-live for cached ExecutionGraph. If not set, defaults to the 
value of {@link
+     * #REFRESH_INTERVAL}.
+     *
+     * <p>Setting this to 0 (or a very small value) means the cache will 
always fetch fresh data,

Review Comment:
   In the comments it says "0 (or a very small value)" but the other comments 
only talk of 0. I think we should be explicit in the text as to what the 
smallest number is that would cause caching.  



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