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use Benchmark qw(cmpthese);

...
      }
    );

Benchmark: timing 10000 iterations of   From DBI, From Cache...
  From DBI: 16 wallclock secs (13.66 usr +  1.50 sys = 15.16 CPU) @ 65
+9.63/s (n=10000)
...
             Rate   From DBI From Cache
  From DBI  660/s         --       -50%
From Cache 1314/s        99%         --

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tidiness is the memory loss of environmental mnemonics