I feel the same. Had to actually take time to understand the different tiers, which should be immediately clear in my opinion. Also, I'm a sucker for having al

I feel the same. Had to actually take time to understand the different tiers, which should be immediately clear in my opinion. Also, I'm a sucker for having all the chapters, and interested in, for example, the chapter about Redis caching. Do I have to pay $289? Way too much...