If you do not need performance, use a database.
To make a relative transparent treansition: Tie::Array::DBD. The more complex your data, the slower it is, but you can work around memory limitations of a computer relatively easy (which was the only motivation for this module).
Here's an overview of speed differences on my machine. Higher numbers are better:
Size op perl SQLite Pg mysql MariaDB
+ CSV
------ -- ---------- ---------- ---------- ---------- ---------- -----
+-----
20 rd 6666666.7 227272.7 3916.2 7538.6 9267.8 4
+444.4
20 wr 6666666.7 172413.8 2842.1 1759.3 1882.7 11
+560.7
200 rd 8333333.3 414078.7 12738.9 8710.4 24330.9
+901.9
200 wr 9523809.5 310559.0 12190.7 7399.7 13898.5 13
+556.6
600 rd 24000000.0 371977.7 14399.2 15106.9 24207.2
+346.0
600 wr 20689655.2 376884.4 14260.9 12633.4 23992.3 14
+080.5
2000 rd 13986014.0 392310.7 45244.8 23147.1 23431.8
+107.1
2000 wr 51282051.3 405515.0 18964.5 16786.4 31738.5 14
+729.2
20000 rd 25380710.7 374995.3 42310.4 22139.2 22889.8
+ -
20000 wr 40899795.5 390930.4 33410.4 37265.1 32508.7
+ -
Enjoy, Have FUN! H.Merijn
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