์ „์ฒด ๊ธ€ 441

[Gradle] Execution failed for task ':bootJar'. > Entry META-INF/MANIFEST.MF is a duplicate

# gradle bootjar ๋ช…๋ น์–ด ์‹คํ–‰์‹œ ๋ฐœ์ƒํ•˜๋Š” ์—๋ŸฌExecution failed for task ':bootJar'. > Entry META-INF/MANIFEST.MF is a duplicate but no duplicate handling strategy has been set. // build.gradle์˜ ์ตœํ•˜๋‹จ์— ์•„๋ž˜๋‚ด์šฉ ์ถ”๊ฐ€tasks.named('bootJar') { duplicatesStrategy = DuplicatesStrategy.EXCLUDE}

Dev_Log 2025.10.22

[jChartFX] X์ถ•, Y์ถ• Label,๊ทธ๋ž˜ํ”„ ํˆดํŒ ํฌ๋งท ๋ณ€๊ฒฝํ•˜๊ธฐ

https://support.softwarefx.com/jChartFX/api(์ฐจํŠธ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ)// ๋”๋ฏธ ๋ฐ์ดํ„ฐlet data = [ { date: "20250912", A: 333333, B: 111111 }, { date: "20250913", A: 444444, B: 222222 }, { date: "20250914", A: 555555, B: 333333 }, { date: "20250915", A: 666666, B: 444444 }, { date: "20250916", A: 777777, B: 555555 }, { date: "20250917", A: 888888, B: 666666 }, { date: "20250918", A: 999999, B: 777777 },]โ€‹โ–ถ๏ธ1. X์ถ• Label ..

Dev_Log 2025.09.19

GlobalFilter

package org.springframework.cloud.gateway.filter;import org.springframework.web.server.ServerWebExchange;import reactor.core.publisher.Mono;public interface GlobalFilter { // ServerWebExchange exchange // -HTTP ์š”์ฒญ/์‘๋‹ต๊ณผ ๊ด€๋ จ๋œ ์ปจํ…์ŠคํŠธ๋ฅผ ๋‹ด๊ณ  ์žˆ์Œ // -์š”์ฒญ ํ—ค๋”, URI, ์ฟผ๋ฆฌ ํŒŒ๋ผ๋ฏธํ„ฐ ๋“ฑ์„ ์ฝ๊ฑฐ๋‚˜ ์ˆ˜์ • ๊ฐ€๋Šฅ // GatewayFilterChain chain // -ํ•„ํ„ฐ ์ฒด์ธ์˜ ๋‚˜๋จธ์ง€๋ฅผ ์‹คํ–‰ํ•  ์ˆ˜ ์žˆ๋Š” ๊ฐ์ฒด // -chain.filter(exchange)๋ฅผ ํ˜ธ์ถœํ•ด์•ผ ๋‹ค์Œ ํ•„ํ„ฐ๋กœ ์ œ์–ด๊ฐ€ ๋„˜์–ด๊ฐ€๋ฉฐ..

[Network] ์›น์‚ฌ์ดํŠธ load ๊ณผ์ •

1. URL ํ•ด์„ & ์†Œ์ผ“ ์ค€๋น„โ–ช๏ธ์›น๋ธŒ๋ผ์šฐ์ €๊ฐ€ URL(www.test.com)์„ ํŒŒ์‹ฑ →TCP ์†Œ์ผ“์„ ๋งŒ๋“ค ์ค€๋น„(์—ํŽ˜๋จธ๋Ÿด ํฌํŠธ ํ• ๋‹น). 2. DNS ์กฐํšŒ(1) ๋ธŒ๋ผ์šฐ์ €/OS ์บ์‹œ ํ™•์ธ → ์—†์œผ๋ฉด(2) ์‹œ์Šคํ…œ DNS ํ•ด์„๊ธฐ(๋ณดํ†ต KT DNS ๋˜๋Š” ์„ค์ •ํ•œ 1.1.1.1/8.8.8.8)๋กœ ์งˆ์˜(UDP/TCP ๋˜๋Š” DoH) → A/AAAA ๋ ˆ์ฝ”๋“œ(์˜ˆ: 27.101.45.121) ํš๋“.โ€ป ์ด ๋‹จ๊ณ„ ์ง€์—ฐ์€ ๋ณดํ†ต 1~20ms ์ˆ˜์ค€(์บ์‹œ ์žˆ์œผ๋ฉด 01ms). 3. ๋กœ์ปฌ ๋„คํŠธ์›Œํฌ ํ†ต๊ณผโ–ช๏ธPC → (์œ ์„  ๊ถŒ์žฅ) → ์ง‘ ๊ณต์œ ๊ธฐ → NAT ํ…Œ์ด๋ธ”์— ๋งคํ•‘ ์ƒ์„ฑ. PPPoE๋ฅผ ์“ฐ๋Š” ๊ฐ€์ • ํšŒ์„ ์ด๋ฉด MTU 1492๋กœ ๋‚ด๋ ค๊ฐ€๊ณ , MSS ํด๋žจํ•‘์ด ๋™์ž‘(๋ฏธ์„ค์ • ์‹œ PMTU ๋ฌธ์ œ๊ฐ€ ์ƒ๊ธธ ์ˆ˜ ์žˆ์Œ). 4. ์ ‘์†๋ง ..

Dev_Study/Network 2025.08.21

[Windows] Windows10 DNS ์ตœ์ ํ™”

์œˆ๋„์šฐ์—์„œ DNS ์ตœ์ ํ™”โ–ถDNS ์„œ๋ฒ„ ๋ณ€๊ฒฝํ•˜๊ธฐ1. ์ œ์–ดํŒ → ๋„คํŠธ์›Œํฌ ๋ฐ ๊ณต์œ  ์„ผํ„ฐ→์–ด๋Œ‘ํ„ฐ ์„ค์ • ๋ณ€๊ฒฝ (๋˜๋Š” ncpa.cpl ์‹คํ–‰)2. ์‚ฌ์šฉ ์ค‘์ธ ์ด๋”๋„ท ์–ด๋Œ‘ํ„ฐ ์šฐํด๋ฆญ→ ์†์„ฑ3. ์ธํ„ฐ๋„ท ํ”„๋กœํ† ์ฝœ ๋ฒ„์ „ 4 (TCP/IPv4) ๋”๋ธ”ํด๋ฆญ4. ์•„๋ž˜์˜ DNS ์„œ๋ฒ„ ์ฃผ์†Œ ์‚ฌ์šฉ ์„ ํƒ ํ›„ ์›ํ•˜๋Š” ์„œ๋ฒ„ ์ž…๋ ฅโ–ถ์ถ”์ฒœ DNS ์„œ๋ฒ„๊ตฌ๊ธ€ DNS8.8.8.8 / 8.8.4.4Cloudflare(ํ•ด์™ธ ๋น ๋ฆ„)1.1.1.1 / 1.0.0.1KT DNS(๊ตญ๋‚ด ๋น ๋ฆ„)168.126.63.1 / 168.126.63.2โ–ถDNS ์‘๋‹ต ์†๋„ ์ธก์ • (๊ถŒ์žฅ)(Windows PowerShell)# ๊ฐDNS ์„œ๋ฒ„๊ฐ€ ๋„๋ฉ”์ธ์„ ์–ผ๋งˆ๋‚˜ ๋นจ๋ฆฌ ์‘๋‹ตํ•˜๋Š”์ง€ testMeasure-Command { Resolve-DnsName www.naver.com -Server 8..

OS_Study/Windows 2025.08.19
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