Hi! Well i'm checking vp isn't part of mariadb today :/ maybe we should port it first and after jmplement new features, right?
Em domingo, 21 de setembro de 2014, Oleksandr Byelkin < sa...@montyprogram.com> escreveu: > Hi! > > On 21.09.14 05:06, Roberto Spadim wrote: > [skip] > >> >> sounds crazy? :) >> ok i know that query cache have some problems with mutex, but it's >> another history we could have a better hit rate with this feature (at least >> when correctly used) >> check that query cache become inconsistent if we change data1 or data2 >> outside vp table >> >> >> > It is doable if put a lot of hooks of asking engine about tables. > > There is already hooks now used in table invalidation. But it works slowly > (relatively) because having no open table difficult to give engine full > information and so each such hook will cause semi-open process and so if we > have miss it looks like double opening overhead. > > So, in price of total overhead we can make it, the question is if it help > so much that gain will be more then overhead in average... As usual I have > doubts about it (need a proof). > > [skip] > -- Roberto Spadim SPAEmpresarial Eng. Automação e Controle
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