On 7 August 2010 22:53, kostia <kostya.demc...@gmail.com> wrote: > I would like to know what search engines are used in web sites like > Facebook, Linkedin, Twitter and so on. > > Are they simplistic database queries or sophisticated search solutions?
I'd say all three of those sites use custom search engines, possibly built on well-known database platforms such as PostgreSQL or MySQL, or a custom indexing system (this is more likely I'd say). They aren't 'simplistic database queries' in that they try to guess what you mean before looking for matches in an efficient manner. It isn't a SELECT * FROM Table1 WHERE field1 LIKE "%searchterm%" query, that's for sure. In fact, if I remember right, twitter uses an in-memory non-SQL database farm for its search. I'm sure Google will help with some answers there. Bringing it back to Django - check out Haystack (http://haystacksearch.org). That's a general Django framework for working with general purpose document search engines like Lucene, Xapian and Whoosh. Look into them; they'll most likely be more than enough for your current needs. If you don't think they are, they're open source so build on top of them. Otherwise, start revising data structures 101 :) > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
