It says on the site: > The end result is a mini Redis alike with only about 1200 lines of code. 1200 LoC seems low, but it illustrates many important aspects t

It says on the site: > The end result is a mini Redis alike with only about 1200 lines of code. 1200 LoC seems low, but it illustrates many important aspects the book attempts to cover. The techniques and approaches used in the book are not exactly the same as the real Redis. Some are intentionally simplified, and some are chosen to illustrate a general topic. Readers can learn even more by comparing different approaches. I wouldn't emphasize the importance is understanding Redis per-se but the ideas around a system like Redis.