Cost-effective Hybrid Storages. Flash Group, Cao Qingling. Motivation. Dry up things with the least money ！. Motivation. High cost, low density, low reliability. Replacement as HDD is not recommended, especially when the data volume is very large.
Flash Group, Cao Qingling
1% of the database size. Gain more than 10% performance.
step2: to the beginning of the cluster.
step3: to the start of the run.
step4: search f.
- BQF: one QF as the buffer, another on SSD.
- Optimized for lookup performance.
- Optimized for insertion.
- Offer a trade off between lookup and insertion.
- Based on cache-oblivious lookaheadarrary(COLA).