At least Go 1.18 required. This is a modification of the Vitesse LRU to include Time Based Eviction
http://code.google.com/p/vitess/source/browse/go/cache
example::
l := lruttl.NewTimeEvictLru(10000, 10*time.Minute, 1*time.Second)
l.EvictCallback = func(key string, v lruttl.Value) {
fmt.Println("evicting ", key)
}
for i := 0; i < 100; i++ {
istr := strconv.FormatInt(int64(i), 10)
l.Set("key"+istr, &CacheValue{i})
}