Why does a single-threaded redis reach the processing speed per second?

1. Pure memory access, Redis puts all of the data in memory, and memory response time is approximately 100 nanoseconds, which is an important foundation for Redis's access to universal levels per second.
2. Non-blocking Io,redis uses epoll as the implementation of IO multiplexing, and the Redis own event processing model transforms link, read-write, and shutdown in Epoll into events, not wasting too much on network IO.

3. Single threading avoids thread switching and the consumption of the resulting state.
   1. Single thread simplifies data structure and algorithm implementation.
   2. Single-threaded to avoid thread switching and the consumption of the resulting state.
   Disadvantage: If the command executes the time process, other commands will be blocked.

Why does a single-threaded redis reach the processing speed per second?