[TYPO3-dev] use cache for internal data of a custom extension

[Martin Ficzel]

i want to cache the result of some very often used and complex
sql-querys of my extension in the cache.

the content will be a serialized multidimensional array (700 items).

is there a way to use the internal typo3 caching functions or do i have
to write my own function and store the cache in a custom table.

in tslib_fe i found a function setPageCacheContent() but i don't see how
to store custom data in this array. especially i have to control the
creation of the hash value because the type and id params are not
important but others are.

does anyone have a hint or an example/documentation for me.

thanks, Martin