Does memory have to be faster than disk?

is there a special situation that makes memory slower than disk? Like a page break?


this is not the case. After missing pages, the data is also read from the hard disk, so it will not be slower than the hard disk.


theoretically, memory is not necessarily faster than hard disk, depending on what memory is made of and what hard disk is. But the reality is that the current memory will not be slower than the hard drive


it depends on what kind of memory and what kind of hard disk to compare, normal configuration, memory is faster than the hard drive.


solid state drives must be faster than hard drives, right?
I don't know if the subject has removed the solid state disk. I feel that it is almost the same as the structure of the memory bar:)


cpu can skip the memory and read the disk directly?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b32e25-341fc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b32e25-341fc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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