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Project Zephyrus/Thread

Zephyrus Project ง„–‰ค‘˜ •ผ๊ธฐ“ค. Thread - Document BottomUp „ •„ ข‹๊ฒ ๊ณ š”.

  • ''Database Connection Pool „ ‚ฌšฉ•˜˜ •˜€ •Š˜, DB ž›„ ––˜คŠ” €ถ„„ •˜‚˜˜ end point—„œ ฒ˜ฆฌ•˜„ธš”. ฒ˜Œ€„ฐ ฅผ ๊ณ  ค•˜€ •Š„ ๊ฒฝšฐ, *.java —„œ Database Connection„ ƒ„ฑ•˜๊ณ , ‚ฌšฉ•˜Š” ฝ”“œฅผ จธ€•Š•„ ๊ฒŒ  ๊ฒ‹ˆ‹ค. Š”  •ง ตœ•…ž…‹ˆ‹ค. pool„ “ฐ‹ค๊ฐ€ “ฐ€ •Š๊ฒŒ   ๊ฒฝšฐŠ”?‹ค‹œ pool„ จ••  ๊ฒฝšฐŠ”? ” ข‹€ ฐฉ•€ interfaceฅผ ž˜  •˜•„œ ‚ฌšฉ•˜๊ณ , ‹ค œ DB ž‘—…„ •˜Š” ž˜ŠคŠ” Factory ฅผ †ต• ƒ„ฑ•˜Š”๊ฒŒ ข‹Šต‹ˆ‹ค. ––ค ฐฉ‹œผกœ DBฅผ ‹คฃจ˜ ๊ฐ„— œ„—„œ ๊ธฐ—” •ƒ ๊ฐ™•„••˜ฃ . --„ šฐ

  • ˜™ •Œ๊ฒ Š‹ค šฐ„ € acessž‘ —ฐ™•˜Š” ๊ฑฐ‚˜ ๊ณต€•†“„๊˜š” ™œƒ•˜ ฑ…— ๊ทธ ‡๊ฒŒ ‚˜™€„œ ๊ธฐ Žธ•‹œฆฌ...-,-;;;
     ••Œ š”~~

  •  œ๊ฐ€  €ฒˆ•™๊ธฐ— ž‘—…–ˆ˜ ฉ”‹  ธ๊ฐ€ žˆŠต‹ˆ‹ค. ฒˆ ”„กœ Šธฅผ •˜„œ ฐธ๊ณ •  ˆ˜ žˆŠ” €ถ„„ ฐธ๊ณ •˜„ธš”.  €ฒˆ •™๊ธฐ—  •ฒ˜ฆฌ ‹คŠตž€ ๊ณผ—„œ ”„กœ Šธกœ –ˆ˜ ๊ฒƒž…‹ˆ‹ค. UP กœ Process ฅผ ง„–‰–ˆ—ˆ๊ณ , †’€(?)  ˆ˜ฅผ œ„•„œ งŽ€ ฌธ„œฅผ ‚จ๊ธฐ๊ธ –ˆŠ”ฐ.. €กฑ•œ  งŽ๊ตฐš” ใ…ก.ใ…ก;; http://www.inazsoft.net/projectworktool.html —„œ ‹คšกœ“œ ฐ›„ ˆ˜ žˆŠต‹ˆ‹ค. - ๊ตฌ๊ทผ
     •ง งŽ€ ฌธ„œ;; ๊ณ  ๊ฐƒ„–ˆŠ‹ค ˜•~ ฌธ„œ˜•‹‚˜ ๊ณ  ค•ณผ  “ฑ—„œ ฐธกฐ• งŒ•œ ข‹€ žฃŒ๊ฐ€  “ฏ --„ฒœ

  •  œ๊ฐ€ JDBC • •Œ ‚ฝงˆ–ˆ˜๊ฑฐ ‹คฅธ ‚ฌžŒ“ค€ ‚ฝงˆ•˜€ •Š„ก •˜๊ธฐ œ„•„œ ‚จ๊ธ ฌธ„œ๊ฐ€ žˆ–—ฌ.. กฐ๊ธˆ‚˜งˆ ‚ฝงˆ ฐฉ€•˜Š”ฐ „›€ ˜ ข‹๊ฒ „ค—ฌ..^^: - ƒ˜‘JDBC ๊€ จ ‚ฝงˆ ฐฉ€šฉ ฌธ„œ

Database ๊€ จ €ถ„ •„‹ˆผ Œ€ ”„กœ Šธ‹œ ๊ณ  ค•••  ‚ฌ•€ ๊ฝค ฉ‹ˆ‹ค. SuccessfulProject ฅผ œ„•„œ ๊ณ  ค•••  ‚ฌ•€ ––ค๊ฒŒ žˆ„๊นŒš”? ž„ธ•œ ‚šฉ€ ฐจ›„  •ฆฌ•„œ “ฐ๊ธฐกœ •˜๊ณ , •˜‚˜ •ผ๊ธฐ •˜๊ณ  ‹ถ€๊ฑ ตœŒ€•œ ค‘ณต„ ”ผ•˜„ก •˜„ธš”. Šนžˆ‚˜, •œฐธ Œ€™”ฅผ •˜€ •Š๊ณ  žˆ‹ค ๊ฐ™€ ผ„ •˜Š” utility„ฑ ž˜Šค“ค„ ‘๊ฐ€ •˜‚˜”ฉ €‹ˆ๊ณ  žˆ„๊ฒ‹ˆ‹ค.

๊ฐ€žฅ ƒ ธ ƒƒœŠ” ˜ˆ „ ฐฝ€„ ฐฐ‹˜ „ธฏธ‚˜—„œ •ผ๊ธฐ –ˆ—ˆ˜, 'Ÿฌ Ÿฌ•œ ผธŒŸฌฆฌŠ” —ฌ๊ธฐ žˆ€ •Š„๊นŒ •„œ ”‹ˆ ฐ”กœ ๊ทธ žฆฌ— žˆ”ผ.' •˜Š” ƒƒœž…‹ˆ‹ค. ๊ทธŸฌ ตœ•…€? 'Ÿฌ Ÿฌ•œ ผธŒŸฌฆฌ๊ฐ€ •„š”•œฐ? Œ.. ˜๊ฒŒ ž˜ งŒ“ค–†“๊ธฐŠ” ๊ท€ฐฎ๊ณ  —ผ ‹คŒ—  •ฆฌ•˜€ ญ' ๊ทธฆฌ๊ณ Š” •‹น method“ค„ copy & paste. ๊ณต†ต “ˆ„ •œ๊ณณ—„œ ‹คฃจ„ก •˜„ธš”. ๊ณต†ต “ˆ€ ๊ฝค งŽŠต‹ˆ‹ค. logging, configuration, resource managing ,..
˜ผž„œ ”Œฐ• •Œ—„ žฃผ ฐœƒ•˜Š”.. ^^ ‹คฅธ ”„กœ๊ทธžจ“ค ”Œฐ•˜‹ค๊ฐ€„ น„Šท•œ Œจ„˜ ฝ”“œ“ค งŽ —ฌ„œ ๊ทธŸฐ ๊ฑ ”ฐกœ utility class ‹œผกœ ”” ‰† ฆฌ ”ฐกœ ‘๊ณ  ๊€ฆฌ•˜๊ณ  –ˆ—ˆฃ . ”„กœ Šธ ง„–‰ค‘—Š” ‹คฅธ ‚ฌžŒ“ค †ŒŠคฅผ €† œผกœ ๊ฐ™  ‚˜๊ฐ€„œ ƒ๊ฐ••ผ๊ฒ ๊ตฐš”. CVS กœ •œ๊ณณ— †ŒŠคฅผ œผ „›€   ๊ฒƒผ ƒ๊ฐ. --„ฒœ

•„ •œ๊ฐ€€ ” ƒ๊ฐ‚˜Š”๊ฒŒ žˆ๊ตฐš”. žฐ”กœ ”„กœ Šธฅผ •˜‹ˆ  Šต‹ˆ‹ค.  ˆŒ€ ž‘„ฑ•˜Š” ผธŒŸฌฆฌ‚˜ ฝ”“œ˜ ค‘๊ฐ„—„œ Exception„ žก•„„œ ‚ผผœฒ„ฆฌ€ งˆ„ธš”. Exception€ ถ”›„ debugging—  ˆŒ€ ธ  •ฅผ ‹๊ณ  žˆŠต‹ˆ‹ค. ค‘๊ฐ„— try ~ catch กœ žก•„ฒ„ฆฌ๊ณ , –– •œ ˜•ƒœกœ„ •Œ คฃผ€ •ŠŠ”๊ฒƒ€ ƒ‹นžˆ œ„—˜•‹ˆ‹ค. ‹œ๊ฐ„ ‚˜ ™€€ จ•„œ ”  „ก •˜€š”. --„ šฐ


ฝ”“œ กฐ–ธ
~cpp 
    static synchronized public SocketManager getInstance() {
        if (instance == null) {
            instance = new SocketManager();
        }
        return instance;
    }

œ„˜ ฐฉ‹ Œ€‹  •„ž˜ฒ˜Ÿผ...

~cpp 
    public static SocketManager getInstance() {
        if (instance == null) {
            synchronized( this ) {
                if (instance == null) {
                    instance = new SocketManager();
                }
            }
        }
        return instance;
    }

System.out.println()  จธ€•Š•„ žฌ•™„ ๊ฐ€ ธ˜ฌ ๊ฒƒ‹ˆ.. --‚ฝงˆ ๊ณ„‹œก 2žฅ :)


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