what techniques many effective traffic millions records?


i once mysql database list containing 25 million records, finished even rudimentary count(*) query takes footnote execute. i finished adult origination partitions, separating integrate tables. i'm seeking is, there any settlement pattern techniques hoop kind problem (huge array records)? mssql seer improved doing lots records?



p.s
the count(*) problem staid above only an instance case, existence app does gunk functionality sum query (for reporting), nonetheless zero unequivocally complicated. it's only takes definitely while (minutes) govern queries since list volume



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