Distributed Systems, Linearizability, Causal Consistency, Sequential Consistency, Cap.
product page. He sees “Hurry up. Only 1 left!” [R2] Bob arrives on mobile case product page. He sees “Hurry up. Only 1 left!” [W1] & [W2] Alex selects both the phone and the case and clicks on pay button. An update request is fired to first “block” the the mobile phone and then conditionally block