gistfile1.txt

<% cached List(FeatureBox).Max(LastEdited) %>
...
<% end_cached %>

SHOW TABLES LIKE 'FeatureBox' 0.0005ms
SHOW FULL FIELDS IN "FeatureBox" 0.0021ms
SELECT DISTINCT "ClassName" FROM "FeatureBox" 0.0002ms
SELECT DISTINCT MAX("LastEdited") FROM "FeatureBox" 0.0002ms

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<% cached CacheKey_FeatureBoxes %>
...
<% end_cached %>

public function CacheKey_FeatureBoxes() {
	$query = new SQLQuery("MAX(LastEdited)", "FeatureBox");
	return $query->execute()->value();
}

SELECT MAX(LastEdited) FROM FeatureBox 0.0004ms