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Spring Data JPA Cursor ๊ธฐ๋ฐ˜ ํŽ˜์ด์ง• ์„ฑ๋Šฅ ๊ฐœ์„ ๊ธฐํŠธ๋žœ์žญ์…˜ ๋ฒ”์œ„ ์ตœ์†Œํ™”๋ฅผ ํ†ตํ•œ ์„ฑ๋Šฅ ๋ฐ ์•ˆ์ •์„ฑ ํ–ฅ์ƒ๋ฉ€ํ‹ฐ ์Šค๋ ˆ๋“œ ํ…Œ์ŠคํŠธ์—์„œ ๋ฐœ์ƒํ•˜๋Š” @Transactional๊ฐ€ ์ฃผ๋Š” ๋ฌธ์ œnull์€ ์˜ค๋ฒ„ ๋กœ๋”ฉ๋œ ๋ฉ”์„œ๋“œ ์ค‘ ์–ด๋–ค ๋ฉ”์„œ๋“œ๋ฅผ ํ˜ธ์ถœํ• ๊นŒ?๊ฒฐ์ œ ์ •๋ณด ๊ฒ€์ฆ์„ ํ†ตํ•œ ์•ˆ์ „ํ•œ ๊ฒฐ์ œ ์—ฐ๋™ ์‹œ์Šคํ…œ ๊ตฌํ˜„ - ํ† ์Šค ํŽ˜์ด๋จผ์ธ @Builder ์‚ฌ์šฉ์˜ ์—ฌ๋Ÿฌ๊ฐ€์ง€ ๋ฐฉ๋ฒ•๊ณผ ์•ˆ์ „ํ•˜๊ฒŒ ์‚ฌ์šฉํ•˜๊ธฐBeanCreationException ์˜ˆ์™ธ๋กœ ์•Œ์•„๋ณด๋Š” ๋นˆ ์ƒ๋ช…์ฃผ๊ธฐ@Trasncational์„ ํ†ตํ•œ ์„ ์–ธ์  ํŠธ๋žœ์žญ์…˜ ๊ด€๋ฆฌ ๋ฐฉ์‹์—์„œ Self Invocation ๋ฌธ์ œ๊ฐ€ ๋ฐœ์ƒํ•˜๋Š” ์ด์œ MySQL COUNT() ํ•จ์ˆ˜์˜ ๋™์ž‘ ์›๋ฆฌ์™€ ์„ฑ๋Šฅ์™ธ๋ถ€ ์˜์กด์„ฑ ์ œ์–ด๋ฅผ ํ†ตํ•œ ๊ฒฐ์ œ ํ”„๋กœ์„ธ์Šค ๋‹ค์–‘ํ•œ ์‹œ๋‚˜๋ฆฌ์˜ค ๊ฒ€์ฆ๊ฒฐ์ œ ์ƒํƒœ ์ „ํ™˜ ๊ด€๋ฆฌ์™€ ์žฌ์‹œ๋„ ๋กœ์ง์„ ํ†ตํ•œ ๊ฒฐ์ œ ๋ณต๊ตฌ ์‹œ์Šคํ…œ ๊ตฌ์ถ•Logger ์„ฑ๋Šฅ ์ €ํ•˜ ๋ฐฉ์ง€์™€ ๊ตฌ์กฐํ™”๋œ ๋กœ๊น… ์„ค๊ณ„๊ฒฐ์ œ ์ด๋ ฅ ์ถ”์  ๋ฐ ํ•ต์‹ฌ ์ง€ํ‘œ ๋ชจ๋‹ˆํ„ฐ๋ง ์‹œ์Šคํ…œ ๊ตฌํ˜„System.out.println()์˜ ๋™์ž‘ ์›๋ฆฌ์™€ ์„ฑ๋Šฅ ์ด์Šˆ๋ณด์ƒ ํŠธ๋žœ์žญ์…˜ ์‹คํŒจ ์ƒํ™ฉ ๊ทน๋ณต ๊ฐ€๋Šฅํ•œ ๊ฒฐ์ œ ํ”Œ๋กœ์šฐ ์„ค๊ณ„์ „๋žต ํŒจํ„ด์„ ํ†ตํ•œ PG ๋…๋ฆฝ์„ฑ ํ™•๋ณด ๋ฐ ํ™•์žฅ ๊ฐ€๋Šฅํ•œ ๊ฒฐ์ œ ์‹œ์Šคํ…œ ์„ค๊ณ„

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