what is buffer cache and log Cache in sql server

buffer cache and memory cachje in sql server.

the meaning of the buffer cash and memory cash is as follows:

Buffer Cache: Buffer cache is a memory pool in which data pages are read. The performance of the buffer cache is indicated as follows: 95% indicates that pages that were found in the memory are 95% of time. Another 5% is needed for physical disk access. If the value falls below 90%, it is an indication of more physical memory requirement on the server.

Log Caches: Log cache is a memory pool used to read and write the log pages. A set of cache pages are available in each log cache. The synchronization is reduced between log and data buffers by managing log caches separately from the buffer cache.