3 ms·
Databases usually don't use caches. It's cheaper to just ask the file-system for the data.
by z3t4 9y ago
Databases usually don't use caches. It's cheaper to just ask the file-system for the data.
- barkanido 9y agoIn Aerospike case, they do not use a file system. they own the mount point and access the disk blocks directly, optimizing for local SSD disks.
- danbruc 9y agoThis is not true at all, bordering to utter nonsense. Databases try hard to keep the correct set of blocks in memory because that is essential for their performance. Heck, many of the fastest database systems advertise themselves as in-memory databases avoiding disks altogether.