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Posted by ant21 at 13:27 | Read More....... | Comments(0) | Trackback(0) The Eight Fallacies of Distributed Computing -[Ëù¼û] Ê±¼ä: 2004-05-25 21:21 The Eight Fallacies of Distributed Computing

Peter Deutsch Essentially everyone, when they first build a distributed application, makes the following eight assumptions. All prove to be false in the long run and all cause big trouble and painful learning experiences.

The network is reliable
Latency is zero
Bandwidth is infinite
The network is secure
Topology doesn't change
There is one administrator
Transport cost is zero
The network is homogeneous Posted by ant21 at 21:21 | Read More....... | Comments(0) | Trackback(0) ÕÒ²»µ½Å®ÅóÓÑµÄÄÐÈËÌØÕ÷ -[Ëù¼û] Ê±¼ä: 2004-05-21 12:37 ÄÑ¹ÖÃ»ÓÐÅ®ÅóÓÑ£¬ÔÀ´ÊÇÕâÑù£º 1¡¢²»³éÑÌ 2¡¢Ö»ÄÜºÈÉÙÁ¿µÄÆ¡¾Æ 3¡¢²»»á¶Ä²©£¨Ö¸²»»á¹ÒÇ®µÄÆË¿Ë¡¢Âé½«ÓÎÏ·£© 4¡¢Ã»ÓÐÒ»Ì×Ææ×°Òì·þ£¨±ÈÈç³¬¶ÌÉÏÒÂ£¬´ó·Ê¿ã×Ó£¬È«ÊÇ¿ßÁþµÄÅ£×Ð¿ãµÈ£© 5¡¢ÏÂ°àÖ±½Ó»Ø¼Ò£¬ÍíÉÏÔÚ¼ÒË¯¾õ£¨Ãñ¼äÁ÷´«£º°´Ê±»Ø¼ÒÊÇÇî¹í£¬Ê®µã»Ø¼ÒÊÇ¾Æ¹í£¬ÎçÒ¹»Ø¼ÒÊÇÉ«¹í£¬Áè³¿»Ø¼ÒÊÇ¶Ä¹í£¡£©¿´À´ÎÒÊÇÇî¹í¡¡ 6¡¢Ã¿ÔÂÄÃµ½ÊÖµÄ¹¤×ÊµÍÓÚ2000Ôª 7¡¢²»ÄÜÇáÒ×½«Ò»¸öÄÐÉúÖÆ·þ£¨Ö¸²»ÄÜ´ò¼Ü£© 8¡¢Éí¸ß²»×ã1.80Ã× 9¡¢ÓÐµùÓÐÄïÃ»³µÃ»·¿£¨×¢£º·¿Ö¸ÎÒÃ»ÓÐ×Ô¼ºµÄÒ»¶°·¿×Ó£¬ºÍ¸¸Ä¸×¡Ò»Æð£© 10¡¢²»¹þº«¡¢²»»áÌø½ÖÎè¡¢³¤µÃ²»ÏñÈÎºÎË§¸ç¡¢²»¸Ò¶¥×²¸¸Ä¸¡¡ ÍêÈ«¾ÍÊÇËµÎÒÂï£¬³ýÁË8ÒÔÍâ£¬¶¼Âú×ã¡£ Posted by ant21 at 12:37 | Read More....... | Comments(1) | Trackback(0) ÄÔÍ¼(mind map) -[Ëù¼û] Ê±¼ä: 2004-04-22 22:52 »¹¼ÇµÃ¼¸ÄêÇ°Ôø¾Á÷ÐÐµÄÒ»±¾Êé£¬½Ð×ö¡ºÑ§Ï°µÄ¸ïÃü¡»Âð£¿µ±Ê±ÎÒÊÇÓµÓÐÒ»±¾µÄ£¬ÀïÃæ¸÷ÖÖÐÂÏÊµÄÏë·¨È·ÊµÈÃÎÒÐË·ÜÁËºÜ¾Ã¡£µ«Ëæ×ÅÊ±¼äµÄÍÆÒÆ£¬Ò²¾Í½¥½¥µÍüÁË£¬Õâ±¾ÊéÒ²¾ÍËæÖ®³Áµ½ÁËÊéÏäµ×¡£ ÊÇÊ²Ã´ÓÖÈÃÎÒÏëÆðÕâ±¾ÊéÄØ£¿ÆäÊµ»¹ÊÇºÍJavaÓÐ¹ØµÄ£¬ÄÇ¾ÍÊÇÕâ¸öÔÙÒ»´ÎÈÃÎÒÐË·ÜµÄ£º freemind ¡£ËüÊÇsfµÄÒ»¸ö¿ªÔ´ÏîÄ¿£¬Èç¹ûÄãÕýÔÚÔÄ¶ÁÕâÆªblog£¬ÄÇÃ´ÄãÒ»¶¨²»ÄÜ´í¹ýÕâ¸öÈí¼þ¡£ ËüÒ²ÈÃÎÒÖØÐÂ¿ªÊ¼¶Ômind map²úÉúÇ¿ÁÒµÄÐËÈ¤¡£ÓÚÊÇgoogleÁËÒ»ÏÂ£¬ÕÒµ½Ò»Ð©Ïà¹ØµÄÐÅÏ¢¡£ ½éÉÜÒ»ÏÂ mind map£º mind map ´óÔ¼ÔÚ60Äê´úÄ©ÓÉTony Buzan·¢Ã÷£¬ÓÃÀ´°ïÖúÑ§ÉúÊ¹ÓÃ¹Ø¼ü´ÊºÍÍ¼Æ¬¼Ç±Ê¼Ç¡£ÕâÖÖ·½·¨·Ç³£¿ì½Ý£¬²¢ÇÒÓÉÓÚËüµÄ¿ÉÊÓÐÔ£¬¼ÇÒäºÍ»Ø¹ËÆðÀ´Ò²ºÜÈÝÒ×¡£ÕâÊÇÒ»·ùµäÐÍµÄmind map£º ÈçºÎ» mind map£º£¨Òë×Ô http://www.peterussell.com/Mindmaps/HowTo.html £© Ö»ÓÃ¹Ø¼ü×Ö£¬»òÕßÈÎºÎ¿ÉÄÜµÄÍ¼Æ¬¡£ ´ÓÒ³ÃæµÄÖÐÐÄ¿ªÊ¼ÏòËÄÖÜÀ©Õ¹¡£ ÔÚÖÐÐÄ·ÅÖÃÒ»·ùÊÓ¾õÐ§¹ûÇ¿ÁÒµÄÍ¼Æ¬ÓÃÀ´ÃèÊöÖ÷Ìâ¡£ Îª×ÓÖ÷Ìâ´´½¨×ÓÖÐÐÄ¡£ °Ñ¹Ø¼ü×Ö·Åµ½Ö¦¸ÉÉÏ¡£ÕâÑù¿ÉÒÔ¼ÓÇ¿±Ê¼ÇµÄ½á¹¹¡£ ´òÓ¡¶ø²»½ö½öÊÇÊéÐ´¡£ÕâÑù¿ÉÒÔÊ¹ËüÃÇ¸ü¼ÓÒ×ÓÚÔÄ¶ÁºÍ¼ÇÒä¡£Ð¡Ð´±È´óÐ´¸ü¾ßÓÐÊÓ¾õ¶ÀÌØÐÔ£¨²¢¸üÒ×ÓÚ¼ÇÒä£©¡£ Ê¹ÓÃ c o l o r À´ÃèÊöÖ÷Ìâ£¬¹ØÁª£¬²¢Ê¹ËüÃÇ¿´ÆðÀ´ºÜÍ»³ö¡£ ÈÎºÎÔÚÒ³ÃæÉÏ Í» ³ö µÄ¶«Î÷Ò²»áÔÚÄãÐÄÀïÍ»³öµÄ¡£ Ë¼¿¼ÒªÁ¢Ìå¡££¨Think three-dimensionally. £© Ê¹ÓÃ¼ýÍ·£¬Í¼±ê»òÆäËü¿ÉÊÓµÄ°ïÖúÀ´Õ¹ÏÖ²»Í¬ÔªËØÖ®¼äµÄÁ¬½Ó¡£ ²»Òª°Ñ¶«Î÷¹ýÓÚ¼¯ÖÐÔÚÒ»¸öµØ·½¡£Èç¹ûÒ»¿éµØ·½ÓÃÍêÁË£¬¾Í»»Ò»¸ö·ÖÖ§¡£ °Ñ³öÏÖµÄÏë·¨¶¼¼ÇÂ¼ÏÂÀ´£¬ÔÚÈÎºÎºÏÊÊµÄµØ·½¡£²»ÒªÆÀÅÐ»òÒÖÖÆ¡£ ´òÆÆ½çÏÞ¡£Èç¹ûÄãÃ»ÓÐ¿Õ¼äÁË£¬²»Òª¿ªÊ¼Ò»ÕÅÐÂµÄÒ³Ãæ£¬°Ñ¸ü¶àµÄÖ½Õ³µ½ÕâÕÅÍ¼ÉÏ¡££¨´òÆÆ8x11ÐÄÀí¡££© ÒªÓÐ´´ÔìÐÔ¡£´´ÔìÐÔ°ïÖú¼ÇÒä¡£ ¿ªÊ¼¶¯ÊÖ°É¡£ÍæµÄÓä¿ì¡£ ÔõÃ´Ñù£¿»¹²»Ïë³¢ÊÔÒ»ÏÂÕâÖÖÈ«ÐÂµÄÑ§Ï°·½Ê½Âð£¿ » mind map µÄÈí¼þ£º FreeMind Free software. Java based, so platform independent. MindManager Professional software. Site has some good examples. MindManuals.com The leading supplier of mind mapping software for MindManager. MindPlugs . Plug-in for Mind Manager that allows live calculating of mathematical formulas. MindMapper . Mindmapping software for Windows and Macintosch. MindMapper PDA . Mindmapping software for Palm. MindGenius software . Integrated with Microsoft Word, PowerPoint, Project Outlook. ConceptDraw MINDMAP Software Mac Classic and OS X versions also available. Èç¹ûÄãºÍÎÒÒ»Ñù£¬¿ªÊ¼¶Ô mind map ×ÅÃÔÁË£¬¿ÉÒÔ½øÒ»²½·ÃÎÊÏÂÃæµÄÕ¾µã¡£ http://www.mind-map.com/ http://www.peterussell.com/ Äã»á·¢ÏÖºÜ¶àÁîÄã¾ªÆæµÄ¶«Î÷¡£ ÔÚ http://images.google.com/ ÓÃ¡ºmind map¡»ËÑË÷£¬Äã»á¿´µ½¸÷ÖÖ¸÷ÑùµÄmind map¡£ Posted by ant21 at 22:52 | Read More....... | Comments(1) | Trackback(0) real-time HTML editor -[Ëù¼û] Ê±¼ä: 2004-04-13 22:12 Á½¸ö²»´íµÄÒ³Ãæ£¬¿ÉÒÔÊµÊ±±à¼¡£ javascript shell -- ½éÉÜ real-time HTML editor Posted by ant21 at 22:12 | Read More....... | Comments(0) | Trackback(0) Google¸ç°×ÄáÖÐÐÄÕýÔÚÕÐÆ¸ -[Ëù¼û] Ê±¼ä: 2004-04-13 20:57 googleµÄ¹¦ÄÜÕæÊÇÔ½À´Ô½¶àÁË£¬¿ÉÏ§ÓÐÐ©ÎÒÃÇÏíÓÃ²»ÁË£¬±ÈÈç froogle £¬¿ÉÄÜÐèÒª´úÀí¡£ ÕâÀï ¿ÉÒÔ¿´µ½googleµÄ×îÐÂ¹¦ÄÜ½éÉÜ¡£ ÁíÍâ£¬googleµÄ¸ç°×ÄáÖÐÐÄÕýÔÚÕÐÆ¸£¬ÖÐÐÄÔ¤¼ÆÔÚ2007Äê´ºÌì¿ª·Å¡£ÖªµÀËüÔÚÄÄ¶ùÂð£¿ÏëÄãÒ²²Â²»µ½£¬ÔÚ¡ºÔÂÇò¡»¡£ È¥¿´¿´°É£¬Õû¸öÕÐÆ¸¹ã¸æºÜÓÐÒâË¼£¬¹²ÓÐÆß¸ö²¿·Ö£º 1 2 3 4 5 6 7 ¡£ Posted by ant21 at 20:57 | Read More....... | Comments(0) | Trackback(0) 2004, year of the Chinese hacker -[Ëù¼û] Ê±¼ä: 2004-01-13 20:36 http://www.oreillynet.com/pub/wlg/4148 µÚÒ»´Î¿´µ½¹úÍâÆÀÂÛÖÐ¹úºÚ¿ÍµÄÎÄÕÂ£¬²»³¤¡£ÀïÃæÌáµ½ÁË netXeyes ¡¢ xfocus ¡¢ cnhonker ¼¸¸öÕ¾µã¡£ Posted by ant21 at 20:36 | Read More....... | Comments(0) | Trackback(0) ·ÖÒ³: [1] [2] [3] [4] [5] ÈÕÀú 2004 Äê 9 ÔÂ Sun Mon Tue Wen Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ×îºó¸üÐÂ Eclipse ºÍ SWT ½Ì³Ì ¸´¶Á»úÈí¼þ JGoodies Looks ÖÐÎÄÐÞ¸Ä°æ ÊÖÌ¸ ÍøÂç´æ´¢ µç×ÓÊé JDocs.com SDM µÄÒ»¸öÎÊÌâ ÓÐÐ©¸Ð¶¯£¬ÓÐÐ©±¯ÉË ³õ´ÎÆ·³¢Ä£Ê½µÄÌðÍ· ×îÐÂÆÀÂÛ kirc : Ææ¹Ö£¬Å¼¶¼Âú×ã£¬. flying_unicorn : ºÜºÃ°¡¡£Ð»Ð». ant21 : µÄÈ·£¬ÎÒÏÖÔÚ¶¼ÓÐ. fishfeather : ÈÎÖØµÀÔ¶¡£¡£ÍæLI. chenge : it's useful,than. chenge : Ð»Ð»£¬ÎÒÒ²ÔÚÕÒÕâ. ant21 : ÍÛ£¬ºÃ°¡£¬ÒÔºóÎÒ. Zhouaj : HI,ÎÒ´òËã¿¼²©Ê¿Á. ant21 : ÕýÔÚ¸´Ï°ÖÐ£¬ËäÈ». Ë¿Ë¿ : °´ÕÕÊ£ÏÂµÄÊ±¼ä¸ø. ´æµµ 2003/08/22/-2003/12/22 2003/12/23/-2004/03/28 Links Java Technology Forums javaranch journal onjava javaworld IBM developerWorks Hacknot java×ÊÔ´·ÖÀàÄ¿Â¼ SenTom javaportal.co.uk JavaRSS.com Patterns Central java.blogs sourceforge tigris javalobby java.net alphaworks java-source.net netbeans bluej Cay Horstmann Bruce Eckel's Web Log Eric S. Raymond's Home Page Rayner Jeremy's blog MARC in XML LibDex weblog user/lib/info Weblogs Compendium ÖÐÎÄweblog°Ù¿ÆÈ«Êé ÖÐÎÄWikipedia°Ù¿ÆÈ«Êé Google News News24 newscientist ¿µÏÉçÇø ¹²´´Èí¼þÁªÃË JWiki×ÔÓÉÇø Ì¨ÍåJavaÉçÇø RIACN Google What' s New Google Weblog Google Services Google Labs ÌìÍøËÑË÷ softpedia my favorite manage