1.

In MySQL, the default size of the key buffer in MB is _________________(a) 4(b) 8(c) 16(d) 32The question was posed to me in a job interview.I'm obligated to ask this question of Administrative-Level Optimizations topic in chapter Query Optimization of MySQL

Answer»

The correct ANSWER is (b) 8

For EXPLANATION I would say: The LARGER values allow MySQL to HOLD more index blocks in memory at once. This increases the chances of finding key values in memory without having to read a NEW block from disk.



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