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çµå±, ïŒå¹Žéãªã«ã²ãšã€çæŽ»ã¯æ¹åããªãã£ã. ãã€ã«ãªã£ãŠãçãå°çã¯ç¶ã. ãã®äžå¹Žã¯çãã䟡å€ãå šãæããªã.
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ãããããã®äžã®èŠãã¿ããéããããšãåºæ¥ãªã.
ðçµ¶æã ããæãã€ã¥ããæ¥ã ã§çããæå³ãããããªã
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2æéåUberEatsããã£ãŠ1230åã皌ãã ã, ãã®éã«çšŒåããŠãbotããã°ã£ãŠ1215åæå€±ãã§ã. ãªãã®ããã«åãããã ããã. ããããåããŠã2æéã§1200åã ã. ãããªä»äºããããããã . ãªãã§ããããå«ãªããšããæ¯æ¥èµ·ãããªããã ãã. ãã®ïŒå¹Ž, ãªããããªã«ãå«ãªããšããèµ·ãããªããã . æ¯æ¥æ¶ãæµãã, æ¯æ¥æ³£ããŠãã. ãããçããããšãªã®ã? ãããæ®éãªã®ã?ãªãæ¯æ¥èŠãã¿ã ãããã, ããã§ãçããªããã°ãããªãã®ãããããªã.
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å©çãå¹ãé£ãã . ãããªæ²ããããšã¯ãªã.
ðã¯ã¿ã·ãåããUberAIæ§ã¯Zing JVM
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ããŸããŸèŠã€ããUberã®æè¡èšäºã¯ãšãŠãããããã. Uberã®æ©æ¢°åŠç¿åºç€ã¯Scalaã§æžãããJVMã§, ãªã¢ã«ã¿ã€ã ãªäºæž¬ããã°ãããã®ã¬ããŒãžã³ã¬ã¯ã·ã§ã³ãã¥ãŒãã³ã°ã®æ³¥æ²Œã®æŠããèšé²ãããŠãã.
Tricks of the Trade: Tuning JVM Memory for Large-scale Services | Uber Blog
Zing JVMãšããGCæéãã»ãŒååšããªãã¢ã«ãŽãªãºã ãæã€åçšJVMãæŽ»çšããŠããããã. ãŸãããã¯ããŒã¿åºç€ãJVMãªã®ãé¢çœã. ãããã¯ã¯ã¿ã·ã奎é·ã®ããã«åããUberAIæ§ã .
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å¯ãã£ãããã®å Žã§çãã¬ãæ°åããã°ããã ãã®è©±ã . ããã§èº«äœãæž©ãŸã.
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DI.FMã¯ãããããã10幎ãã£ãšèãç¶ãããŠããããæŸéå±ãªã®ã§, ããã§ïŒã€ãçµã³ã€ãããšã¯ãšãŠããšã¢ã.
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DJã»ãããè²·ããã. ããããã°ã©ããã©ãã§ããããã³ãŒããæžããªããŠããã. ãããã¯ãã©ã³ã¹ã»ãã¥ãŒãžãã¯ãäœæ²ãããDJã«ãªã£ãŠããŒããŒãŽã§ã³ãã«ã©ã€ã³ã«ãªããã. ã¢ãŒãã³ã»ãŽã¡ã³ã»ããŒã¬ã³ã®ãã©ã³ã¹ã»ãã¥ãŒãžãã¯ã¯çŽ æŽããã, ãããŠã¢ãŒãã³ããã©ã³ã¹ãæ¥æ¬ã§ãŸãã§æµè¡ã£ãŠããªããšã«é©ããŠãããã . ããããDJã«ãªãåžæããã. å°æ¥ã®å€¢ã¯ãã©ã³ã¹DJã . ãã€ãŠã¯ã¯ã©ã·ãã¯é³æ¥œã®äžå¿ã¯ãã€ã, ãããçŸåšãšãŒããã鳿¥œã®äžå¿ã¯ãªã©ã³ãã .
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幞ããšã¯, å¯ããšãã²ããããè§£æ¶ããããããª, åçŽãªãã®ãªãã . èŠãã¿ããªããªãããšã幞ãã . åçŽã«, å¯ããšèŸããã .
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ïŒé±éããããã£ãšWebsocketã®æ¥ç¶ãå®å®ããªãåé¡ã調æ»ããŠãããããããã±ãªãä»ããã. ã¯ããã¯äœ¿ã£ãŠããã©ã€ãã©ãªã®ããããšæã£ãã®ã ãã©, çµå±ãããã®ç¥èäžè¶³ã«ãããã¹ã ã£ã.
CPUã ã£ããã¡ã¢ãªã ã£ããã¹ã¬ããåŠçã ã£ããGCããã³ãè§£æã ã£ãã⊠ããããããããã€ããŠèª¿æ»ãããŠã¯å€ããããšãããããããé åããããæ°ãããã, åŠã¶ããšããããããã£ã. JVMã®äœã¬ãã«ã®åŠã³ãåç©«ã«ããŠæºè¶³ããããšã«ãã.
ðæ°ã«æåŸã«äººçã®ãŽãŒã«ãå®ããŠæãããªãããã«æ¯æ¥ãç²Ÿäžæ¯çãã(22/12/23)
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æ°å¹Žéãã£ãšé 匵ã£ãŠããããªã«ãæ¹åããªãã©ããã, çŸå®ã¯æ¥ã«æ¥ã«èŸããªã£ãŠãã. å»å¹Žã®å¬ãå¯ãã£ã, ããšãšãã®å¬ãå¯ãã£ã, ãã®ãŸããå¯ãã£ã.
æ¥å¹Žããã¯ãš, ãªãã©é¡ã£ãããšã ããã. ãã€ã«ãªã£ãŠãå¬ãå¯ã. æ³£ããŠãåããŠã, å¯ãããéããããšãåºæ¥ãªã. å«ãã§ãå£ãããéã¯åºãŠããªã.
ãã®ãŸãŸãããããããŠããªã«ãäºæ ã¯æ¹åããªããã°ãã®ãã¡æ»ã¬ã ãã . ãããŠããã¯æ°ã«æåŸãããããªã. ãã®ãã, æ°ã«æåŸã«äººçã®ãŽãŒã«ãå®ããŠ, æãããªãããã«æ¯æ¥ãç²Ÿäžæ¯çããããšæã.
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ã¯ãªã¹ãã¹ããæ£æããã€ãã©ããã«ä»®æ³é貚botãéçºãã.
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ã¯ãªã¹ãã¹ã ããããæ£æã ããã, åãªããã€ãã®ïŒæ¥ã«éããªãã«ãããããã, ããã«ãªã«ãç¹å¥ãªããšãæåŸ ããããæ²ãã¿ãå éãã. ãã€ãã©ããæèµ·ããŠ, çæ³ãããŠ, ã³ãŒããæžããŠ, å¯ãã ã.
ãããä»äºãªã®ããéã³ãªã®ããããããªã. äŒãŸãã«äœæ¥ãããŠ, ãããäœå¹Žãç¶ç¶ããŠ, ããã§ãéã皌ããã°ããã¯ä»äºãšãªã, ãªã«ã䟡å€ãçã¿åºããªããã°åã«å¥œããªããšãããŠéãã§ããã ãã«ãªã.
ããããã®è§£éãæ±ºå®ããã®ã¯ä»ã§ã¯ãªã. ããããä»ãªã«ãããŠçããŠããã®ãã¯, å°æ¥æ±ºå®ããã®ã§ããããã¯ä»ã¯å€æãä¿çãã. ä»äºã§ãéã³ã§ããªã, ãã 䟡å€ãæ±ããŠããŒããŒããå©ãã ã.
ããããããããããä»äºãšããŠçå£ã«åãçµãã ãšããã§, 第äžè ããã¿ã, ããšãã°èŠªæããã¯ããã€ã¯ãã çé¢ç®ã«åããã«éãã§æ®ãããŠãããšæãã ãã. 芪ã«ã¯ãããã¯ä»äºãããŠãããšäž»åŒµããŠããã, çè§£ããŠãããŠãããšæã. çé ãªèŠªæã¯ç¡çã ãã. 芪ãçè§£ããŠãããã°ããšã¯ã©ãã§ããã.
ðClojuredocsã®ã·ã³ãã«ããåèã«ãã§ããã«ã«ã¹ãã³ã§æŠå¿µã®APIãéçºãã(2022/12/23)
æè¿, Clojuredocsã¯ãããªããšæãããšããããã.
ãŸãClojureã®ææ³ã«ã€ããŠã®çåã¯ãããã¿ãã°ã ããã解決ã§ãã. 颿°ãšãã®äœ¿ãæ¹ããŸãšãŸã£ãŠããŠ, ããã«see alsoã«ã¯æ°åã®é¢é£ãªã³ã¯ãã¯ãããŠãã.
ClojuredocçšåºŠã®see alsoã®ãªã³ã¯ããã§ããã«ã«ã¹ãã³ã«ãã.
zettelã®ã¢ã€ãã¢ã¡ã¢ããã®çšåºŠããã. ã²ãšã€ã²ãšã€ã®ã¹ã³ãŒããå°ããããŠ, ããã«é¢é£ã¡ã¢ã¯æ°åã®ãªã³ã¯ãã€ãã.
ã¡ãã£ãšorg-roam->markdownããã®ãµã€ãå ¬éã«éçãæããŠããã®ã¯, ãªã³ã¯ã貌ãããããšexportããã£ããé ããªã. ãŸããµã€ãå ¬éããªããã°ããã®ã ã⊠ãããã¯æéããšã£ãŠå°ãã¹ã¯ãªãããæžããŠèªååã®ãã³å ¥ããããã.
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ãã€ãæéã確ä¿ã§ãããšãã«ã¬ãããªããããšããŠãã§ããªã. ããšãã£ãŠãããªããšãªã«ãåã«é²ãŸãªã. æéã確ä¿ããŠãªãã¹ãæ¯æ¥é²ãã.
1æ¥ã«ã²ãšã€ã®ãããã¯ãæ·±å ããŠããã. ãããç©ã¿éãã. 仿¥ã¯ãªãèªåãèœèªã奜ãããæ·±å ãã.
ã²ãšã€ã®zettel noteãäœæããã ãã§ã, ããã¯èªå·±çè§£ãæ·±ãŸã. 人çã«å³ãããçãŸãã. ãããã£ãŠéããã¡ã¢ãå°ããã€ãŸãšããŠããã. 人çã¯ç¹ãšç¹ã®çµã³ã€ããªãã . zettelåäœã§ã¡ã¢ãšããæèãæŽçãå§ããŠ, ãããã€ããæãã仿¥ãã®é .
ð±ç¥èãçµéšã¯org-modeã®èŠåºãã«éããèªåã®æå¿ã§ã€ãªãåããã
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ãããªçšŒãã§ã¯ãã€ã«ãªã£ãŠãçãå°çããæãåºãããšãåºæ¥ãªã. é ãã€ãããã°èº«äœã§åã, 身äœãã€ãããã°é ã§åã. ãã®ãµã€ã¯ã«ã¯ãã€ãŸã§ç¶ããã . çŸå®ã¯åªåã«çããŠãããªã.
幞ã, çæŽ»è²»ã¯ä»æã6äžãäžåãã ãã. çæŽ»è²»ãåãã°åãã»ã©, èããåŽåãããªããŠãããã . 黿°ä»£ãé«éš°ãããã, ããããææ¿ãå·èµåº«ãã¬ã¹ãã€ãã£ãŠããªãã®ã§, 黿°ä»£ã¯2000åçšåºŠã ãª. äžéã®èŠç¹ãšèªåã®èŠç¹ãéãããã.
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1æ¥2æéãããã¯ããããã以äžã¯èº«äœã«ç²åŽãæããã®ã§ãã¹ã¯ã¯ãŒã¯ã«æ¯éãã§ã.
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ããã, æŒçšŒåã®ããšã«å·æ°Žã·ã£ã¯ãŒã济ã³ãŠã«ãã§ã€ã³ãããããšæ²¡é ç¶æ ã«çªå ¥ããããšãäºå®. é©åãªçšŒåã¯çŽ æŽããããã . åé¡ã¯, ç²åŽããããããšã¯ãããªããã . ããå æžãé£ãã.
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UberEatsã¯3æéã®çšŒåã§1900å, ãŸãæçµŠã1000åå±ããªãã£ã. ã¡ã³ã¿ã«ãç ã.
ãããæé žçŽ éååŸã®å·æ°Žã·ã£ã¯ãŒã济ã³ãŠä»®æ³é貚botéçºã«éäžã§ãã. ããã ããå¯äžçŽ æŽãããããšã . ã¢ã¯ãã£ãã¬ã¹ãã®ã€ãã§ã«ç掻費ã皌ããã°ãã. ä»äºèªäœã«äŸ¡å€ããªããŠã, èªç¶ã®ãªããèªè»¢è»ã§èµ°ã, å¿èº«ã®å¥åº·ã«ãã䟡å€ããã. èãé£ã¹ãããã²ãããéèãé£ã¹ãŠèªè»¢è»ãæŒããããã¯äºåæ³ã®ãããªå¥åº·ãç¶æããŠãã. ããã¯çŽ æŽãããããšã .
ãããã¯äžéã®ã³ãããããå ã«ç·æ¥äºæ 宣èšãããã, æªã ã«ç¶ç¶ããŠãã. æŠæäžã«ã¯çãæ£æãé¢ä¿ãªã. è² ããã°æ»ã¬ã ãã . æ»ã¬ã®ãæããã°æŠããã . ããŒããŒããå©ããã .
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