From: "Jesús Gabriel y Galán" Date: 2012-07-11T15:40:47+09:00 Subject: Re: the best way to match these domains. On Wed, Jul 11, 2012 at 4:37 AM, Eliezer Croitoru wrote: > about the RDBMS or a DB is more for persistent storage and interface > integration later. > and also the lists i have are now 1 Million rows long only for one category. > i intend to make it efficient and to use some DB to add new sites into the > to be checked\categorized list. If you are not really using the relational part of a RDBMS, and you only need some kind of persistence for "data structures", I would recommend taking a look at Redis . It's a very fast storage engine with first level support for lists, sets, hashes, etc: http://redis.io Jesus.