package Ġcom . blog . repository Ċ Ċ import Ġcom . blog . domain . User Ċ import Ġorg . springframework . data . repository . reactive . Reactive Crud Repository Ċ import Ġorg . springframework . stereotype . Repository Ċ import Ġreactor . core . publisher . Mono Ċ Ċ @ Repository Ċ interface ĠUser Repository Ġ: ĠReactive Crud Repository < User , ĠString > Ġ{ ĊĠĠĠ Ġfun ĠfindBy UserId ( userId : ĠString ): ĠMono < User > ĊĠĠĠ Ġfun ĠfindBy Username ( username : ĠString ): ĠMono < User > Ċ } Ċ