{"id":152687,"date":"2020-09-07T10:06:26","date_gmt":"2020-09-07T02:06:26","guid":{"rendered":"http:\/\/4563.org\/?p=152687"},"modified":"2020-09-07T10:06:26","modified_gmt":"2020-09-07T02:06:26","slug":"completablefuture-%e4%bd%bf%e7%94%a8%e4%ba%a4%e6%b5%81%ef%bc%88%e5%85%b6%e5%ae%9e%e6%98%af%e5%9b%b0%e8%a7%a3%ef%bc%89","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=152687","title":{"rendered":"CompletableFuture \u4f7f\u7528\u4ea4\u6d41\uff08\u5176\u5b9e\u662f\u56f0\u89e3\uff09"},"content":{"rendered":"
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CompletableFuture \u4f7f\u7528\u4ea4\u6d41\uff08\u5176\u5b9e\u662f\u56f0\u89e3\uff09 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5982\u4e0b\u4ee3\u7801\u6240\u793a\uff0c\u6211\u4f7f\u7528 CompletableFuture \u8fdb\u884c\u591a\u7ebf\u7a0b\u7684\u4e0b\u8f7d<\/p>\n

\u4f46\u662f\u6211\u7684 map \u91cc\u9762\u6709 29 \u4e2a\u56fe\u7247 URL\uff0c\u6211\u53ea\u5f97\u5230\u4e86 26 \u5f20\uff0c\u6240\u4ee5\u6c42\u52a9\u5927\u4f6c\u4eec\uff0c<\/p>\n

1\uff0c\u6211\u7684\u4ee3\u7801\u54ea\u91cc\u6709\u95ee\u9898<\/p>\n

2\uff0c\u6c42\u52a9\u5b8c\u6574\u7684 CompletableFuture \u7684\u4f7f\u7528\u65b9\u5f0f<\/p>\n

 private static void downloadCompletableFuture(Map<String, String> map) {       try {           List<CompletableFuture<Void>> futureList = new ArrayList<>();           for (Map.Entry<String, String> stringStringEntry : map.entrySet()) {               \/\/ image Url               String imageUrl = stringStringEntry.getValue();               CompletableFuture<Void> future = CompletableFuture.runAsync(new Runnable() {                   @Override                   public void run() {                       \/\/ download picture                       DownloadPicture3.download(imageUrl);                   }               });               futureList.add(future);           }           CompletableFuture<Void> allDoneFuture =             CompletableFuture.allOf(futureList.toArray(new CompletableFuture[0]));           allDoneFuture.get(20, TimeUnit.SECONDS);       } catch (Exception e) {           e.printStackTrace();       } finally {           log.info(\"end\");           \/\/ 11:27:37.442 [main] INFO com.ice.http.JucDownloadPicture       }   }   ``` <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (29<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : AllanAG <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u65e2\u7136\u4f7f\u7528\u4e86 CompletableFuture\uff0c\u6700\u597d\u4f7f\u7528\u5f02\u6b65\u7684\u65b9\u5f0f\u5b8c\u6210\u6574\u4e2a\u6d41\u7a0b\u3002
    1 \u56fe\u7247\u4e0b\u8f7d\u4e0d\u591f\uff0c\u63a8\u6d4b\u662f\u8d85\u65f6\u65f6\u95f4\u592a\u77ed\uff0callDoneFuture.get(20, TimeUnit.SECONDS);20s \u6267\u884c\u65f6\u95f4\u4e0d\u591f
    2 \u53ef\u4ee5\u4e0b\u9762\u90a3\u6bb5\u4ee3\u7801\u4fee\u6539\u6210\u8fd9\u79cd\u65b9\u5f0f\u8bd5\u8bd5
    “`
    CompletableFuture<Void> allDoneFuture =
     CompletableFuture.allOf(futureList.toArray(new CompletableFuture[0]));
      allDoneFuture.whenCompleteAsync((void1, void2) -> {
     \/\/ \u6240\u6709\u5b8c\u6210\u56de\u8c03
     log.info(“end”);
     });
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @AllanAG 
    #1 \u8c22\u8c22!!!!!!\u6211\u73b0\u5728\u53bb\u8bd5\u8bd5\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @AllanAG <\/p>\n
    #1 \u5b9e\u9645\u4e0a\u4e0d\u884c\uff0cwhenCompleteAsync \u867d\u7136\u662f\u5728\u83b7\u5f97\u7ed3\u679c\u5b8c\u6210\u540e\u6267\u884c\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\uff0c\u4e00\u5f20\u56fe\u7247\u4e5f\u6ca1\u6709\uff0clog \u4e5f\u6ca1\u6709\u6253\u5370<\/p>\n
    “`
     private static void downloadCompletableFuture2(Map<String, String> map) {
     try {
     List<CompletableFuture<Void>> futureList = new ArrayList<>();
     for (Map.Entry<String, String> stringStringEntry : map.entrySet()) {
     \/\/ image Url
     String imageUrl = stringStringEntry.getValue();
     CompletableFuture<Void> future = CompletableFuture.runAsync(new Runnable() {
     @Override
     public void run() {
     \/\/ download picture
     log.info(“\u4e0b\u8f7d\u6240\u82b1\u65f6\u95f4 = ” + DownloadPicture3.download(imageUrl));
     }
     });
     futureList.add(future);
     }
     CompletableFuture<Void> allDoneFuture = CompletableFuture.allOf(futureList.toArray(new CompletableFuture[0]));
     allDoneFuture.whenCompleteAsync((void1, void2) -> {
     \/\/ \u6240\u6709\u5b8c\u6210\u56de\u8c03
     log.info(“================================end”);
     });<\/p>\n
     } catch (Exception e) {
     e.printStackTrace();
     } finally {
     log.info(“end”);
     \/\/ 11:27:37.442 [main] INFO com.ice.http.JucDownloadPicture
     }
     }
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : wysnylc <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
     \"CompletableFuture\u6536\u96c6\u7684\u8d44\u6599                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : putaozhenhaochi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528\u6709\u8fd4\u56de\u7ed3\u679c\u7684\u65b9\u6cd5\u63a7\u5236\u770b\u770b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : mango88 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @RedBeanIce <\/p>\n
    CompletableFuture.allOf(futureList.toArray(new CompletableFuture[0])).join();<\/p>\n
    \u963b\u585e\u7b49\u5f85\u6240\u6709\u7684\u5b8c\u6210                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @wysnylc 
    #4 \u56fe\u88c2\u5f00\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mango88 <\/p>\n
    #6 \u4e0d\u884c\uff0c\u4ecd\u7136\u5c11\u4e86\u4e09\u5f20<\/p>\n
    CompletableFuture.allOf(futureList.toArray(new CompletableFuture[0])).join();                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @putaozhenhaochi 
    #5 \u6c42\u63a8\u8350\uff0c\u6211\u5df2\u7ecf\u4eba\u50bb\u4e86\u3002\u3002\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : mango88 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @RedBeanIce <\/p>\n
    \u5c11\u4e09\u5f20\uff0c\u53ef\u80fd\u5c31\u4e0d\u662f\u5e76\u884c\u7684\u539f\u56e0\u4e86\uff0c\u4e5f\u8bb8\u662f\u4e0b\u8f7d\u62a5\u9519\u4e86\u5427                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mango88 
    #6 <\/p>\n
    https:\/\/imgchr.com\/i\/wk77B6                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mango88 
    #10 <\/p>\n
    \u6211\u540c\u65f6\u4f7f\u7528\u4e00\u4e2a\u666e\u901a\u65b9\u6cd5\u4e0b\u8f7d\uff0c\u7136\u540e\u4f7f\u7528\u7684 completablefuture \u4e0b\u8f7d\uff0c\u4e00\u524d\u4e00\u540e\u6267\u884c\uff0c\uff0c\u524d\u9762\u7684\u666e\u901a\u65b9\u6cd5\u8fd8\u662f 29 \u5f20\uff0c\u4f46\u662f\u4e00\u5230\u540e\u9762\u8fd9\u4e2a\u5c31\u5c11\u4e86 2-3 \u5f20\uff0c\u6bcf\u6b21\u6267\u884c\u4e0d\u7b49\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : putaozhenhaochi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @RedBeanIce \u54c8\u54c8 CompletableFuture \u4e0d\u719f<\/p>\n
    \u8981\u4e0d\u8bd5\u8bd5 Stream \u5e76\u884c\uff1a 
     map.values().stream().parallel().forEach( v->{
     System.out.println(v);
     });                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : cheng6563 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 Java \u8fd9\u51e0\u4e2a API \u5b9e\u5728\u592a\u590d\u6742\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : zhady009 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528\u8fd9\u4e2a\u90fd\u8981\u52a0\u4e2a exceptionally(tx -> {log…})
    \u4e0d\u7136\u4f60\u627e\u4e0d\u51fa\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : mango88 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5947\u602a\u4e86\uff0c\u770b\u8d77\u6765\u6ca1\u5565\u95ee\u9898\u3002DownloadPictutre \u65b9\u6cd5\u80fd\u7b80\u5355\u8d34\u4e00\u4e0b\u5417 \uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : cs419 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6392\u67e5\u624b\u6bb5\u4e0d\u8be6\u7ec6 
    \u65e2\u7136\u4e0b\u8f7d\u6709\u7f3a\u5931 
    \u90a3\u628a\u90a3 3 \u4e2a\u5931\u8d25\u7684\u5355\u72ec\u8dd1\u4e00\u904d\u4ee3\u7801\u662f\u4ec0\u4e48\u7ed3\u679c \uff08\u6392\u9664\u8fd9 3 \u4e2a\u94fe\u63a5\u5c31\u6709\u95ee\u9898\uff09
    \u518d\u9488\u5bf9\u4e0b\u8f7d\u6210\u529f\u7684 26 \u4e2a\u94fe\u63a5\uff0c\u4e0b\u8f7d 50 \u6b21 \u53c8\u662f\u5565\u7ed3\u679c \uff08\u6392\u9664\u4efb\u52a1\u592a\u591a\uff09<\/p>\n
    \u5728\u65b9\u6cd5 DownloadPicture3.download(imageUrl); \u524d\u540e\u6253\u5370\u5e8f\u53f7
    \u786e\u4fdd download \u65b9\u6cd5 \u6210\u529f\u7684\u786e\u5b8c\u6210\u4e86 50 \u6b21\u8c03\u7528
    \u5982\u679c\u8fd9\u91cc\u6ca1\u6bdb\u75c5\uff0c\u90a3\u5c31\u662f download \u65b9\u6cd5\u5185\u90e8\u6267\u884c\u51fa\u4e86\u95ee\u9898<\/p>\n
    \u83b7\u53d6\u7ed3\u679c allDoneFuture.get() \u4e0d\u4f7f\u7528\u8d85\u65f6\u65f6\u95f4
    allDoneFuture.exceptionally(e->{
     System.out.println(“\u51fa\u9519-“+ e.getMessage());
     e.printStackTrace();
    });
    \u6253\u5370\u62a5\u9519                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : Narcissu5 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “`java
    DownloadPicture3.download(imageUrl);
    “`<\/p>\n
    \u6bd4\u8f83\u53ef\u80fd\u662f\u8fd9\u4e2a\u65b9\u6cd5\u6709\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\u3002\u53e6\u5916\u5982\u679c IO \u4e0d\u662f\u5f02\u6b65\u7684\uff0c\u4f7f\u7528\u5f02\u6b65\u5c31\u6ca1\u610f\u4e49\u3002\u5982\u679c IO \u662f\u5f02\u6b65\u7684\uff0c\u90a3\u4e48\u8fd9\u4e2a\u65b9\u6cd5\u672c\u8eab\u5c31\u5e94\u8be5\u8fd4\u56de\u7684\u662f Future\uff0c\u4e0d\u9700\u8981\u5728 runAsync \u3002\u53e6\u5916 runAsync \u672c\u8eab\u4f1a\u4f7f\u7528`ForkJoinPool#commonPool()`,\u800c ForkJoinPool \u91cc\u9762\u662f\u4e0d\u80fd\u653e\u5f02\u6b65\u65b9\u6cd5\u7684\uff0c\u4f60\u8fd9\u6837\u5b50\u53ef\u80fd\u628a\u6574\u4e2a JVM \u90fd\u62d6\u6162                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : coldear <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 add more logs to debug.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : allan888 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 download \u4e4b\u524d random \u7684\u7b49\u51e0\u79d2\u949f\u8bd5\u8bd5\uff1f\u6709\u53ef\u80fd\u6709\u7684\u7f51\u7ad9\u56fe\u7247\u4f1a\u9632\u6b62\u592a\u591a\u5e76\u53d1\u7684\u8fde\u63a5\u3002
    \u5927\u6982\u8fd9\u6837\uff1a
    Thread.sleep(ThreadLocalRandom.current().nextInt(0, 15000));
    DownloadPicture3.download(imageUrl);                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : isir1234 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 runAsync \u540e\u52a0\u4e0a\u5f02\u5e38\u5904\u7406\u8bd5\u8bd5<\/p>\n
    \u6bd4\u5982 CompletableFuture.runAsync(()->xxx).exceptionally(e -> {
     \/\/ print exception here
     return null;
     }))                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @zhady009 
    @mango88 
    @cs419 
    @Narcissu5 
    @coldear 
    @allan888 
    @isir1234 <\/p>\n
    https:\/\/www.yuque.com\/docs\/share\/61f38a49-764c-4b6e-9271-53e06fc0d32d?#<\/p>\n
    \u5404\u4f4d\u5927\u4f6c\u4ee3\u7801\u5df2\u7ecf\u8d34\u51fa\u6765\u4e86\uff0c\uff0c\u5927\u4f6c\u4eec\u53ef\u4ee5\u5728\u81ea\u5df1\u7684\u7535\u8111\u6267\u884c\u94fe\u63a5\u4e2d\u7684\u4ee3\u7801\uff0c
    \u5927\u4f6c\u4eec\u7684\u65b9\u6cd5\u6211\u90fd\u8bd5\u4e86\u4e00\u4e0b\uff0c\u597d\u50cf\u4e0d\u884c<\/p>\n
    1\uff0c\u4e5f\u6ca1\u6709\u62a5\u9519\u7684 log
    2\uff0c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @putaozhenhaochi <\/p>\n
     private static void downloadStream(Map<String, String> map) throws IOException {
     map.values().parallelStream().forEach(new Consumer<String>() {
     @SneakyThrows
     @Override
     public void accept(String s) {
     Long download = download(s);
     System.out.println(download);
     }
     });
     }                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 #13 
    \u540c\u6837\u4e5f\u4f1a\u4e22\u5f88\u591a\u5f20\uff0c\uff0c\uff0c\u8be6\u60c5\u4ee3\u7801\u5c31\u662f\u5728\u4e0a\u9762\u94fe\u63a5\u4ee3\u7801\u91cc\u9762\uff0c\u52a0\u4e86\u4e00\u4e2a\u65b9\u6cd5                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : amiwrong123 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e2a\u4eba\u6000\u7591\uff0c\u662f\u4e0d\u662f ForkJoinPool#commonPool()\u7684\u5751\uff0c\u96be\u9053\u662f\u5728 supplyAsync \u5185\u90e8\u63d0\u4ea4 task \u7ed9 commonPool \u7684\u65f6\u5019\u6267\u884c\u4e86\u4ec0\u4e48\u5947\u602a\u7684\u62d2\u7edd\u7b56\u7565\u3002<\/p>\n
    \u5efa\u8bae\u4f7f\u7528 supplyAsync(Supplier<U> supplier, Executor executor)\uff0c\u81ea\u5df1\u7ed9\u4e00\u4e2a\u7ebf\u7a0b\u6c60\uff0c\u6392\u9664\u4e00\u4e0b\u7ebf\u7a0b\u6c60\u7684\u539f\u56e0\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : cs419 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6d4b\u4e86\u4e0b\u4ee3\u7801 \u4e0b\u8f7d\u6570\u91cf\u6b63\u786e 
    \u4ee3\u7801\u8d34\u5728\u8bed\u96c0\u4e0b\u9762\u4e86 
    \u4f60\u518d\u8bd5\u4e0b\uff0c\u4e0d\u884c\u5c31\u8ba9\u4f60\u540c\u4e8b\u4e5f\u8fd0\u884c\u4e0b 
    \u6ca1\u51c6\u662f\u4f60\u73af\u5883\u7684\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @cs419 <\/p>\n
    #26 \u5927\u4f6c\u6211\u8bd5\u4e86\u4e00\u4e0b\u60a8\u7684\u65b9\u6848\uff0c\u8fd8\u662f\u4e0d\u884c\uff0c\u4e0d\u8fc7\u6211\u5728 QQ \u7fa4\u670b\u53cb\u7684\u5e2e\u52a9\u4e0b\u89e3\u51b3\u4e86\u3002
    https:\/\/www.yuque.com\/docs\/share\/4ba58651-ac10-46ae-9175-1c5b43ec97ec?#                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6b64\u8d34 end<\/p>\n
    \u4e0b\u9762\u8d34\u4ee3\u7801\uff08\u4e0a\u9762\u7684\u662f\u5927\u4f6c\u7684\u65b9\u6848\uff0c\u4e0b\u9762\u662f\u6d4b\u8bd5 3 \u6b21\u7684\u4ee3\u7801\uff0c\u53ef\u884c\uff09 base64<\/p>\n
    aHR0cHM6Ly93d3cueXVxdWUuY29tL2RvY3Mvc2hhcmUvNGJhNTg2NTEtYWMxMC00NmFlLTkxNzUtMWM1YjQzZWM5N2VjPyM=<\/p>\n
    \u9519\u8bef\u539f\u56e0\uff1a\u9519\u8bef\u7684\u4f7f\u7528 long startTime = System.currentTimeMillis() \u4f5c\u4e3a\u6587\u4ef6\u7684\u540d\u5b57\uff0c\u6587\u4ef6\u88ab\u8986\u76d6\u4e86<\/p>\n
    \u89e3\u51b3\u63aa\u65bd\uff1a\u4f7f\u7528 AtomicLong.incrementAndGet()\u81ea\u589e\uff0c\u539f\u5b50\u6027\u7684\u589e\u52a0\u7136\u540e\u8fd4\u56de\u7684\u64cd\u4f5c<\/p>\n
    \u53e6\u5916\uff1aLongAdder \u7531\u4e8e\u6ca1\u6709 incrementAndGet\uff0c\u6240\u4ee5\u53ea\u80fd increment()\uff0c\u7136\u540e longvalue()\uff0c\u8fd9\u6837\u4e0d\u662f\u539f\u5b50\u7684\u64cd\u4f5c\uff0c\u6240\u4ee5\u4e5f\u4f1a\u8986\u76d6\uff08\u4e2d\u95f4\u6709\u4e00\u4e2a\u7248\u672c\uff0c\u6211\u6ca1\u6709\u4f7f\u7528 System.currentTimeMillis()\uff0c\u4f7f\u7528\u4e86 LongAdder \u4ecd\u7136\u5931\u8d25\u4e86\uff09<\/p>\n
    \u603b\u7ed3\uff1a\u591a\u7ebf\u7a0b\u597d\u96be\u554a\uff01\uff01\uff01\uff01                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : RedBeanIce <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5404\u4f4d\u5927\u4f6c\uff0c\u8c22\u8c22\u6307\u6559\uff01\uff01\uff01\uff01\u592a\u5f3a\u4e86<\/p>\n
    \u8d34\u4e00\u4e0b 26 \u7684\u5927\u4f6c
    https:\/\/www.yuque.com\/docs\/share\/6065b121-4732-4826-bac2-3bb356f0461e?#                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    CompletableFuture…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/152687"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=152687"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/152687\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=152687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=152687"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=152687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}