Re: tablespace memory cache
> tablespace memory cache
Those three words do not go together. Nor do any two go together.
A "tablespace" is (in MySQL) a file that holds all the data and indexes for one or more "tables". (one per table in .ibd; many in ibdata1)
"memory" refers to RAM. Or to the "MEMORY" "Engine", which is not related to InnoDB.
"cache" is a use of RAM for optimization. Operating systems, RAID controllers, MySQL, and many other things use "cache". When copying data (such as a disk block) from one place to another (eg, between RAM and disk), the block may be stored temporarily in "cache", thereby allowing the sender to go about its business sooner.
"Role" -- where did you see that word?
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Re: tablespace memory cache
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