in src/main/scala/ophan/google/indexing/observatory/model/AvailabilityRecord.scala [102:111]
def reasonableTimeBetweenChecksForContentAged(age: Duration): Duration =
ofMinutes(2).plus(age.dividedBy(5))
object Field {
val Uri = "uri"
val FirstSeenInSitemap = "firstSeenInSitemap"
val FirstSeenInSitemapDateIndexKey = s"${FirstSeenInSitemap}Date"
def timestampFor(found: Boolean): String = if (found) "found" else "missing"
}