Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaÖи÷ÀàCache»úÖÆÊµÏÖ½â¾ö·½°¸

ÔÚJavaÖУ¬²»Í¬µÄÀà¶¼ÓÐ×Ô¼ºµ¥¶ÀµÄCache»úÖÆ£¬ÊµÏֵķ½·¨Ò²¿ÉÄÜÓÐËù²»Í¬£¬ÎÄÕÂÁоÙÁËJavaÖг£¼ûµÄ¸÷ÀàCache»úÖÆµÄʵÏÖ·½·¨£¬Í¬Ê±½øÐÐÁË×ۺϵıȽϡ£
OSCache
OSCacheÊǸöÒ»¸ö¹ã·º²ÉÓõĸßÐÔÄܵÄJava EE»º´æ¿ò¼Ü£¬OSCacheÄÜÓÃÓÚÈκÎJavaÓ¦ÓóÌÐòµÄÆÕͨµÄ»º´æ½â¾ö·½°¸¡£
OSCacheÓÐÒÔÏÂÌØµã£º»º´æÈκζÔÏó£¬Äã¿ÉÒÔ²»ÊÜÏÞÖÆµÄ»º´æ²¿·ÖjspÒ³Ãæ»òHTTPÇëÇó£¬ÈκÎjava¶ÔÏ󶼿ÉÒÔ»º´æ¡£ÓµÓÐÈ«ÃæµÄAPI--OSCache API¸øÄãÈ«ÃæµÄ³ÌÐòÀ´¿ØÖÆËùÓеÄOSCacheÌØÐÔ¡£
ÓÀ¾Ã»º´æ--»º´æÄÜËæÒâµÄдÈëÓ²ÅÌ£¬Òò´ËÔÊÐí°º¹óµÄ´´½¨(expensive-to-create)Êý¾ÝÀ´±£³Ö»º´æ£¬ÉõÖÁÄÜÈÃÓ¦ÓÃÖØÆô¡£Ö§³Ö¼¯Èº--¼¯Èº»º´æÊý¾ÝÄܱ»µ¥¸öµÄ½øÐвÎÊýÅäÖ㬲»ÐèÒªÐ޸ĴúÂë¡£»º´æ¼Ç¼µÄ¹ýÆÚ--Äã¿ÉÒÔÓÐ×î´óÏ޶ȵĿØÖÆ»º´æ¶ÔÏóµÄ¹ýÆÚ£¬°üÀ¨¿É²åÈëʽµÄˢвßÂÔ(Èç¹ûĬÈÏÐÔÄܲ»ÐèҪʱ)¡£
Java Caching System
JSC(Java Caching System)ÊÇÒ»¸öÓ÷ֲ¼Ê½µÄ»º´æÏµÍ³£¬ÊÇ»ùÓÚ·þÎñÆ÷µÄjavaÓ¦ÓóÌÐò¡£ËüÊÇͨ¹ýÌṩ¹ÜÀí¸÷ÖÖ¶¯Ì¬»º´æÊý¾ÝÀ´¼ÓËÙ¶¯Ì¬webÓ¦Óá£JCSºÍÆäËû»º´æÏµÍ³Ò»Ñù£¬Ò²ÊÇÒ»¸öÓÃÓÚ¸ßËÙ¶ÁÈ¡£¬µÍËÙдÈëµÄÓ¦ÓóÌÐò¡£¶¯Ì¬ÄÚÈݺͱ¨±íϵͳÄܹ»»ñµÃ¸üºÃµÄÐÔÄÜ¡£
Èç¹ûÒ»¸öÍøÕ¾£¬ÓÐÖØ¸´µÄÍøÕ¾½á¹¹£¬Ê¹ÓüäЪÐÔ¸üз½Ê½µÄÊý¾Ý¿â(¶ø²»ÊÇÁ¬Ðø²»¶ÏµÄ¸üÐÂÊý¾Ý¿â)£¬±»Öظ´ËÑË÷³öÏàͬ½á¹ûµÄ£¬¾ÍÄܹ»Í¨¹ýÖ´Ðлº´æ·½Ê½¸Ä½øÆäÐÔÄܺÍÉìËõÐÔ¡£
EHCache
EHCacheÊÇÒ»¸ö´¿JavaµÄÔÚ½ø³ÌÖеĻº´æ£¬Ëü¾ßÓÐÒÔÏÂÌØÐÔ£º¿ìËÙ£¬¼òµ¥£¬ÎªHibernate 2.1³äµ±¿É²åÈëµÄ»º´æ£¬×îСµÄÒÀÀµÐÔ£¬È«ÃæµÄÎĵµºÍ²âÊÔ¡£
JCache
JCacheÊǸö¿ªÔ´³ÌÐò£¬ÕýÔÚŬÁ¦³ÉΪJSR-107¿ªÔ´¹æ·¶£¬JSR-107¹æ·¶ÒѾ­ºÜ¶àÄêû¸Ä±äÁË¡£Õâ¸ö°æ±¾ÈÔÈ»Êǹ¹½¨ÔÚ×î³õµÄ¹¦Äܶ¨ÒåÉÏ¡£
ShiftOne
ShiftOne Java Object CacheÊÇÒ»¸öÖ´ÐÐһϵÁÐÑϸñµÄ¶ÔÏ󻺴æ²ßÂÔµÄJava lib£¬¾ÍÏñÒ»¸öÇáÁ¿¼¶µÄÅäÖûº´æ¹¤×÷״̬µÄ¿ò¼Ü¡£
SwarmCache
SwarmCacheÊÇÒ»¸ö¼òµ¥ÇÒÓÐЧµÄ·Ö²¼Ê½»º´æ£¬ËüʹÓÃIP multicastÓëͬһ¸ö¾ÖÓòÍøµÄÆäËûÖ÷»ú½øÐÐͨѶ£¬ÊÇÌØ±ðΪ¼¯ÈººÍÊý¾ÝÇý¶¯webÓ¦ÓóÌÐò¶øÉè¼ÆµÄ¡£SwarmCacheÄܹ»ÈõäÐ͵ĶÁ²Ù×÷´ó´ó³¬¹ýд²Ù×÷µÄÕâÀàÓ¦ÓÃÌṩ¸üºÃµÄÐÔÄÜÖ§³Ö¡£ SwarmCacheʹÓÃJavaGroupsÀ´¹ÜÀí´ÓÊô¹ØÏµºÍ·Ö²¼Ê½»º´æµÄͨѶ¡£
TreeCache/JBossCache
JBossCacheÊÇÒ»¸ö¸´ÖƵÄÊÂÎñ´¦Àí»º´æ£¬ËüÔÊÐíÄ㻺´æÆóÒµ¼¶Ó¦ÓÃÊý¾ÝÀ´¸üºÃµÄ¸ÄÉÆÐÔÄÜ¡£»º´æÊý¾Ý±»×Ô¶¯¸´ÖÆ£¬ÈÃÄãÇáËɽøÐÐJBoss·þÎñÆ÷Ö®¼äµÄ¼¯Èº¹¤×÷¡£JBossCacheÄܹ»Í¨¹ýJBossÓ¦Ó÷þÎñ»òÆäËûJ2EEÈÝÆ÷À´ÔËÐÐÒ»¸öMBean·þÎñ£¬µ


Ïà¹ØÎĵµ£º

java£ºµÝ¹é£º10ԪǮ°´1£¬2£¬5ÔªÈÎÒâ×éºÏ

package game;
public class Money {
 public static void main(String[] args) {
  fun("", 10);
  System.out.println("×ܹ²Ëã·¨£º" + i);
 }
 // 10ԪǮµÄ×é³É£¬1£¬2£¬5ÈÎÒâ×éºÏ
 public static int i = 1;
 public static void fun(String log, int n) {
  ......

java£ºµÝ¹éººÂÞËþÓÎÏ·×îÉÙµÄ×ß·¨

package game;
public class HanTaGame {
 public static void main(String[] args) {
  fun('1', '2', '3', 2);
 }
 // ººËþÓÎÏ·½â¾ö·½°¸
 public static void fun(char src, char idle, char dest, int n) {
  if (1 == n) {
   System.out.println(src ......

JAVA ¹²ÏíËøºÍÌõ¼þ±äÁ¿Ò»¶þ

¶àÏß³ÌÖ®¼äÐèҪЭµ÷¹¤×÷¡£ÀýÈ磬ä¯ÀÀÆ÷µÄÒ»¸öÏÔʾͼƬµÄÏß³ÌdisplayThreadÏëÒªÖ´ÐÐÏÔʾͼƬµÄÈÎÎñ£¬±ØÐëµÈ´ýÏÂÔØÏß³ÌdownloadThread½«¸ÃͼƬÏÂÔØÍê±Ï¡£Èç¹ûͼƬ»¹Ã»ÓÐÏÂÔØÍ꣬displayThread¿ÉÒÔÔÝÍ££¬µ±downloadThreadÍê³ÉÁËÈÎÎñºó£¬ÔÙ֪ͨdisplayThread“ͼƬ׼±¸Íê±Ï£¬¿ÉÒÔÏÔʾÁË”£¬Õâʱ£¬displayThread¼ÌÐøÖ´ ......

javaÐéÄâ»újvm¹ØÓÚÄÚ´æµÄÉèÖÃÓëµ÷ÓÅ

JVMÄÚ´æµÄÉèÖõÄÔ­Àí
 
ĬÈϵÄjavaÐéÄâ»úµÄ´óС±È½ÏС£¬ÔÚ¶Ô´óÊý¾Ý½øÐд¦Àíʱjava¾Í»á±¨´í£ºjava.lang.OutOfMemoryError¡£
ÉèÖÃjvmÄÚ´æµÄ·½·¨£¬¶ÔÓÚµ¥¶ÀµÄ.class£¬¿ÉÒÔÓÃÏÂÃæµÄ·½·¨¶ÔTestÔËÐÐʱµÄjvmÄÚ´æ½øÐÐÉèÖá£
java -Xms64m -Xmx256m Test
-XmsÊÇÉèÖÃÄÚ´æ³õʼ»¯µÄ´óС
-XmxÊÇÉèÖÃ×î´óÄܹ»Ê¹ÓÃÄÚ´æµÄ´óС£¨ ......

java ioϵͳʵÀý½²½â

      ÔÚJAVAÖнøÐÐÎļþµÄ¶Áд²Ù×÷Ö÷ÒªÓõ½ÁËJAVAÖеÄÊäÈëÊä³ö£¨IO£©API£¬Java I/OÌṩÁËÐí¶àAPIÌṩ¶ÔÎļþ£¬Äڴ棬socketµÄ¶ÁдµÈ£¬±¾ÎÄÖ÷Ҫͨ¹ýʵÀýÀ´½²½âÔõÑùÀí½âjavaÖеÄÊäÈëÊä³ö¡£
Ò»£¬»ù±¾¸ÅÄî
   Á÷£¨Stream£©£º
  Á÷ÊÇÒ»ÖÖÓÐÐòµÄ×Ö½ÚÊý¾Ý¶ÔÏó¡£Á÷ÓÖ·ÖΪÊäÈëÁ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ