Question about disk usage
wwadepohl opened this issue · 1 comments
I'm searching for an embedded key/value store. We are using eMMC manged flash storage. The eMMC should last the 10 years lifetime of the device. As I understood, unqlite write its buffers to disk only on unqlite_close() or unqlite_commit(). How big are the chunks being written? Is there a thumbnail formula to calculate the storage needed for some data records.? Whats the overhead unqlite needs for storage? Thanks
The default page (i.e. chunk) size is 4KB, just exactly any modern UNIX system. The page size can be adjusted at run-time or compile time to fit your needs (i.e. Low system resources) via unqlite_lib_config() with a configuration verb set to UNQLITE_LIB_CONFIG_PAGE_SIZE. This value must be a power of two.