It's widespread belief that SQL DBMSes are doomed to be hulking because of burden of backward compatibility. This belief is frequently used by marketing of various NoSQL DBMSes. However, this is not necessary true. Development in Open Source community makes product development flexible enough to meet needs of the times. MySQL and PostgreSQL, which are most popular Open Source DBMSes, recently made optimizations for big servers which made it possible to process more than million of SQL queries per second in the single instance. This talk will cover particular optimizations made in PostgreSQL for achieving this result, which could previously seem like fantastic. And one may say that Open Sourcse DBMSes open a new era of millions queries per second.