2006年08月16日

中国外交部强烈抗议小泉再次参拜靖国神社

作为一中国人,我也不喜欢这样的事情发生,它深深刺痛了我们民族的伤痛。

但是我们是不是应该看待事情理性一些呢。

假如你是小泉你会去么?你别斩钉截铁的说,不去!我知道,以你现在的思想肯定这么想,但是换位思考思考呢。你站在小泉的位子上,作为自己民族的英雄,你不应该去参拜么?你作为国家的领袖不给人民做一个榜样,那人民又怎么会去崇拜自己民族的英雄呢,一旦民族英雄情结丢失,那么很可能就是国家等等。

俗话说得好,民族的才是世界的。一个国家如果没有了自己民族的东西,那么这个国家实际上就是一个名存实亡的。日本之所以那么强硬不就是因为人家的民族的东西保持的好么?相反,回看我们,盲目的崇外,简直不知道在干什么。有多少人的母语水平能达到4级的?你去外国跟别人说英语,外国人来到中国你还跟他说英语,这是什么?贱!没骨气。

当务之急还是在加强国力的同时不要忘记我们民族的东西,我们民族是伟大的,不能在我们这一代人中丢失阿!!日本为什么敢不顾亚洲国家的干预一再的搞那些事情,归根结底还是因为,在亚洲人家是老大。关于这点我是深有体会的,家在中缅边境,可以看到不少缅甸人,但是你根本不屑于去学习缅甸语,而且你到了缅甸一样可以大声地说中国话,而且还有不少缅甸人来讨好你。因为什么,就是因为中国比缅甸强大的多。同样的道理,如果中国强大到当上了亚洲老大,那么日本在参拜前就不得不掂量掂量轻重了!

总是摆出一副低人一等的姿态乞求别人的同情,不如睁一只眼闭一只眼,搞好自己的管它干什么呢!!爱参不参,等老子强大了,捏死你Y的。

2006年08月15日

Discuz!学习记

一个很好的机会,看了Discuz!的不少代码。

这个小项目说小也小,说大也大。

小:只需要改动几行代码而已。

大:需要修改数据库结构,而且还需要从别的数据库把数据导过来。

 

不过导数据没分到我头上,呵呵。

看到同事导那80w+的数据头疼阿,差不多导了8个小时。好多中文数据莫名其妙的不能使用,很奇怪。

Discuz!的代码是个学习的好榜样,不知道我什么时候才能写那么好的代码@@

但是我不清楚为什么它每次登录的时候都要去update  表members的全部数据一次。很奇怪。

 

2006年08月13日

看完了疯狂的石头

一种全新的感觉,挺棒。

好久没有那么舒服的看过一场电影了。

没有大明星,没有细腻的画面,没有高超的绝技。有的是那巧妙的构思,新颖的叙事方式,给人一种豁然开朗的感觉。真好,喜欢这样让人眼前一亮的电影。

但是剧情的设计过于巧合,给人一点夸张的感觉,但是影片又同时从不同角色的视角来叙述同一件事,又是那么的合情合理。

一场闹剧

 

顶你个肺。

2006年08月11日

.htaccess

关于这个文件的说明

ErrorDocument 404 /errors/notfound.html
ErrorDocument 500 /errors/internalerror.html

 

在那没有游戏的日子里,好寂寞,好无聊。

看着同学每天晚上10点就上床睡觉,真的很无奈很无聊。不是累而是因为无事可做,所以上床那么早。

我不睡,因为我在玩游戏,但是这游戏玩着不爽了!

1、网络不好,很郁闷,一卡一卡的,没有raid,没有战场,那这个游戏就已经死了一半了,整天在诺大一个地图上跑来跑去,好无聊,好寂寞!!再这样下去,我会离开的。我恨长宽。

2、那么长时间的玩这个游戏,腻味早已生成,只是被某些东西压抑着,一旦有一天,唐三藏来到五指山揭开山上的封印,孙悟空就会腾空而出,变成一匹脱缰的野马,我也将离开这个游戏,但是现在唐三藏在哪里呢?

 

回忆暂停…..

第一次拿工资,昨天!

 

挺高兴,取了那么多钱(其实不多)放到钱包里,成功地走出了进入社会的第一步。

 

加油。为了理想去奋斗吧。

2006年08月09日



com.danga.MemCached
Class MemCachedClient

java.lang.Object  extended by com.danga.MemCached.MemCachedClient 

public class MemCachedClient
extends java.lang.Object

This is a Java client for the memcached server available from http://www.danga.com/memcached/.
Supports setting, adding, replacing, deleting compressed/uncompressed and
serialized (can be stored as string if object is native class) objects to memcached.

Now pulls SockIO objects from SockIOPool, which is a connection pool. The server failover
has also been moved into the SockIOPool class.
This pool needs to be initialized prior to the client working. See javadocs from SockIOPool.

Some examples of use follow.

To create cache client object and set params:

        MemCachedClient mc = new MemCachedClient();

        // compression is enabled by default            mc.setCompressEnable(true);

        // set compression threshhold to 4 KB (default: 15 KB)          mc.setCompressThreshold(4096);

        // turn on storing primitive types as a string representation        // Should not do this in most cases.            mc.setPrimitiveAsString(true); 

To store an object:

        MemCachedClient mc = new MemCachedClient();        String key   = "cacheKey1";             Object value = SomeClass.getObject();           mc.set(key, value); 

To store an object using a custom server hashCode:

        MemCachedClient mc = new MemCachedClient();        String key   = "cacheKey1";             Object value = SomeClass.getObject();           Integer hash = new Integer(45);         mc.set(key, value, hash); 

The set method shown above will always set the object in the cache.
The add and replace methods do the same, but with a slight difference.

  • add — will store the object only if the server does not have an entry for this key
  • replace — will store the object only if the server already has an entry for this key

To delete a cache entry:

        MemCachedClient mc = new MemCachedClient();        String key   = "cacheKey1";             mc.delete(key); 

To delete a cache entry using a custom hash code:

        MemCachedClient mc = new MemCachedClient();        String key   = "cacheKey1";             Integer hash = new Integer(45);         mc.delete(key, hashCode); 

To store a counter and then increment or decrement that counter:

        MemCachedClient mc = new MemCachedClient();        String key   = "counterKey";            mc.storeCounter(key, new Integer(100));        System.out.println("counter after adding      1: " mc.incr(key));               System.out.println("counter after adding      5: " mc.incr(key, 5));            System.out.println("counter after subtracting 4: " mc.decr(key, 4));            System.out.println("counter after subtracting 1: " mc.decr(key));        

To store a counter and then increment or decrement that counter with custom hash:

        MemCachedClient mc = new MemCachedClient();        String key   = "counterKey";            Integer hash = new Integer(45);         mc.storeCounter(key, new Integer(100), hash);        System.out.println("counter after adding      1: " mc.incr(key, 1, hash));              System.out.println("counter after adding      5: " mc.incr(key, 5, hash));              System.out.println("counter after subtracting 4: " mc.decr(key, 4, hash));              System.out.println("counter after subtracting 1: " mc.decr(key, 1, hash));       

To retrieve an object from the cache:

        MemCachedClient mc = new MemCachedClient();        String key   = "key";           Object value = mc.get(key);      

To retrieve an object from the cache with custom hash:

        MemCachedClient mc = new MemCachedClient();        String key   = "key";           Integer hash = new Integer(45);         Object value = mc.get(key, hash);        

To retrieve an multiple objects from the cache

        MemCachedClient mc = new MemCachedClient();        String[] keys   = { "key", "key1", "key2" };        Object value = mc.getMulti(keys); 

To retrieve an multiple objects from the cache with custom hashing

        MemCachedClient mc = new MemCachedClient();        String[] keys    = { "key", "key1", "key2" };        Integer[] hashes = { new Integer(45), new Integer(32), new Integer(44) };        Object value = mc.getMulti(keys, hashes); 

To flush all items in server(s)

        MemCachedClient mc = new MemCachedClient();        mc.flushAll(); 

To get stats from server(s)

        MemCachedClient mc = new MemCachedClient();        Map stats = mc.stats(); 

Version:
1.3.2
Author:
greg whalin

Field Summary
private  java.lang.ClassLoader classLoader
           
private static java.lang.String CLIENT_ERROR
           
private static int COMPRESS_THRESH
           
private  boolean compressEnable
           
private  long compressThreshold
           
private  java.lang.String defaultEncoding
           
private static java.lang.String DELETED
           
private static java.lang.String END
           
private static java.lang.String ERROR
           
private static int F_COMPRESSED
           
private static int F_SERIALIZED
           
private static java.lang.String ITEM
           
private static Logger log
           
private static java.lang.String NOTFOUND
           
private static java.lang.String NOTSTORED
           
private static java.lang.String OK
           
private  java.lang.String poolName
           
private  boolean primitiveAsString
           
private static java.lang.String SERVER_ERROR
           
private static java.lang.String STATS
           
private static java.lang.String STORED
           
private static java.lang.String VALUE
           

 

Constructor Summary
MemCachedClient()
          Creates a new instance of MemCachedClient.
MemCachedClient(java.lang.ClassLoader classLoader)
          Creates a new instance of MemCacheClient but acceptes a passed in ClassLoader.

 

Method Summary
 boolean add(java.lang.String key, java.lang.Object value)
          Adds data to the server; only the key and the value are specified.
 boolean add(java.lang.String key, java.lang.Object value, java.util.Date expiry)
          Adds data to the server; the key, value, and an expiration time are specified.
 boolean add(java.lang.String key, java.lang.Object value, java.util.Date expiry, java.lang.Integer hashCode)
          Adds data to the server; the key, value, and an expiration time are specified.
 boolean add(java.lang.String key, java.lang.Object value, java.lang.Integer hashCode)
          Adds data to the server; the key, value, and an optional hashcode are passed in.
 long decr(java.lang.String key)
          Decrement the value at the specified key by 1, and then return it.
 long decr(java.lang.String key, long inc)
          Decrement the value at the specified key by passed in value, and then return it.
 long decr(java.lang.String key, long inc, java.lang.Integer hashCode)
          Decrement the value at the specified key by the specified increment, and then return it.
 boolean delete(java.lang.String key)
          Deletes an object from cache given cache key.
 boolean delete(java.lang.String key, java.util.Date expiry)
          Deletes an object from cache given cache key and expiration date.
 boolean delete(java.lang.String key, java.lang.Integer hashCode, java.util.Date expiry)
          Deletes an object from cache given cache key, a delete time, and an optional hashcode.
 boolean flushAll()
          Invalidates the entire cache.
 boolean flushAll(java.lang.String[] servers)
          Invalidates the entire cache.
 java.lang.Object get(java.lang.String key)
          Retrieve a key from the server, using a specific hash.
 java.lang.Object get(java.lang.String key, java.lang.Integer hashCode)
          Retrieve a key from the server, using a specific hash.
 java.lang.Object get(java.lang.String key, java.lang.Integer hashCode, boolean asString)
          Retrieve a key from the server, using a specific hash.
 long getCounter(java.lang.String key)
          Returns value in counter at given key as long.
 long getCounter(java.lang.String key, java.lang.Integer hashCode)
          Returns value in counter at given key as long.
 java.util.Map getMulti(java.lang.String[] keys)
          Retrieve multiple objects from the memcache.
 java.util.Map getMulti(java.lang.String[] keys, java.lang.Integer[] hashCodes)
          Retrieve multiple keys from the memcache.
 java.util.Map getMulti(java.lang.String[] keys, java.lang.Integer[] hashCodes, boolean asString)
          Retrieve multiple keys from the memcache.
 java.lang.Object[] getMultiArray(java.lang.String[] keys)
          Retrieve multiple objects from the memcache.
 java.lang.Object[] getMultiArray(java.lang.String[] keys, java.lang.Integer[] hashCodes)
          Retrieve multiple objects from the memcache.
 java.lang.Object[] getMultiArray(java.lang.String[] keys, java.lang.Integer[] hashCodes, boolean asString)
          Retrieve multiple objects from the memcache.
 long incr(java.lang.String key)
          Increment the value at the specified key by 1, and then return it.
 long incr(java.lang.String key, long inc)
          Increment the value at the specified key by passed in val.
 long incr(java.lang.String key, long inc, java.lang.Integer hashCode)
          Increment the value at the specified key by the specified increment, and then return it.
private  long incrdecr(java.lang.String cmdname, java.lang.String key, long inc, java.lang.Integer hashCode)
          Increments/decrements the value at the specified key by inc.
private  void init()
          Initializes client object to defaults.
 boolean keyExists(java.lang.String key)
          Checks to see if key exists in cache.
private  void loadItems(SockIOPool.SockIO sock, java.util.Map hm, boolean asString)
          This method loads the data from cache into a Map.
 boolean replace(java.lang.String key, java.lang.Object value)
          Updates data on the server; only the key and the value are specified.
 boolean replace(java.lang.String key, java.lang.Object value, java.util.Date expiry)
          Updates data on the server; the key, value, and an expiration time are specified.
 boolean replace(java.lang.String key, java.lang.Object value, java.util.Date expiry, java.lang.Integer hashCode)
          Updates data on the server; the key, value, and an expiration time are specified.
 boolean replace(java.lang.String key, java.lang.Object value, java.lang.Integer hashCode)
          Updates data on the server; only the key and the value and an optional hash are specified.
 boolean set(java.lang.String key, java.lang.Object value)
          Stores data on the server; only the key and the value are specified.
 boolean set(java.lang.String key, java.lang.Object value, java.util.Date expiry)
          Stores data on the server; the key, value, and an expiration time are specified.
 boolean set(java.lang.String key, java.lang.Object value, java.util.Date expiry, java.lang.Integer hashCode)
          Stores data on the server; the key, value, and an expiration time are specified.
 boolean set(java.lang.String key, java.lang.Object value, java.lang.Integer hashCode)
          Stores data on the server; only the key and the value are specified.
private  boolean set(java.lang.String cmdname, java.lang.String key, java.lang.Object value, java.util.Date expiry, java.lang.Integer hashCode, boolean asString)
          Stores data to cache.
 void setCompressEnable(boolean compressEnable)
          Enable storing compressed data, provided it meets the threshold requirements.
 void setCompressThreshold(long compressThreshold)
          Sets the required length for data to be considered for compression.
 void setDefaultEncoding(java.lang.String defaultEncoding)
          Sets default String encoding when storing primitives as Strings.
 void setPoolName(java.lang.String poolName)
          Sets the pool that this instance of the client will use.
 void setPrimitiveAsString(boolean primitiveAsString)
          Enables storing primitive types as their String values.
 java.util.Map stats()
          Retrieves stats for all servers.
 java.util.Map stats(java.lang.String[] servers)
          Retrieves stats for passed in servers (or all servers).
private  java.util.Map stats(java.lang.String[] servers, java.lang.String command, java.lang.String lineStart)
           
 java.util.Map statsCacheDump(int slabNumber)
          Retrieves items cachedump for all servers.
 java.util.Map statsCacheDump(java.lang.String[] servers, int slabNumber)
          Retrieves stats for passed in servers (or all servers).
 java.util.Map statsItems()
          Retrieves stats items for all servers.
 java.util.Map statsItems(java.lang.String[] servers)
          Retrieves stats for passed in servers (or all servers).
 java.util.Map statsSlabs()
          Retrieves stats items for all servers.
 java.util.Map statsSlabs(java.lang.String[] servers)
          Retrieves stats for passed in servers (or all servers).
 boolean storeCounter(java.lang.String key, long counter)
          Store a counter to memcached given a key
 boolean storeCounter(java.lang.String key, java.lang.Long counter)
          Store a counter to memcached given a key
 boolean storeCounter(java.lang.String key, java.lang.Long counter, java.lang.Integer hashCode)
          Store a counter to memcached given a key

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

log

private static Logger log

VALUE

private static final java.lang.String VALUE
See Also:
Constant Field Values

STATS

private static final java.lang.String STATS
See Also:
Constant Field Values

ITEM

private static final java.lang.String ITEM
See Also:
Constant Field Values

DELETED

private static final java.lang.String DELETED
See Also:
Constant Field Values

NOTFOUND

private static final java.lang.String NOTFOUND
See Also:
Constant Field Values

STORED

private static final java.lang.String STORED
See Also:
Constant Field Values

NOTSTORED

private static final java.lang.String NOTSTORED
See Also:
Constant Field Values

OK

private static final java.lang.String OK
See Also:
Constant Field Values

END

private static final java.lang.String END
See Also:
Constant Field Values

ERROR

private static final java.lang.String ERROR
See Also:
Constant Field Values

CLIENT_ERROR

private static final java.lang.String CLIENT_ERROR
See Also:
Constant Field Values

SERVER_ERROR

private static final java.lang.String SERVER_ERROR
See Also:
Constant Field Values

COMPRESS_THRESH

private static final int COMPRESS_THRESH
See Also:
Constant Field Values

F_COMPRESSED

private static final int F_COMPRESSED
See Also:
Constant Field Values

F_SERIALIZED

private static final int F_SERIALIZED
See Also:
Constant Field Values

primitiveAsString

private boolean primitiveAsString

compressEnable

private boolean compressEnable

compressThreshold

private long compressThreshold

defaultEncoding

private java.lang.String defaultEncoding

poolName

private java.lang.String poolName

classLoader

private java.lang.ClassLoader classLoader

Constructor Detail

MemCachedClient

public MemCachedClient()
Creates a new instance of MemCachedClient.


MemCachedClient

public MemCachedClient(java.lang.ClassLoader classLoader)
Creates a new instance of MemCacheClient but acceptes a passed in ClassLoader.

Parameters:
classLoader – ClassLoader object.

Method Detail

init

private void init()
Initializes client object to defaults. This enables compression and sets compression threshhold to 15 KB.


setPoolName

public void setPoolName(java.lang.String poolName)
Sets the pool that this instance of the client will use. The pool must already be initialized or none of this will work.

Parameters:
poolName – name of the pool to use

setPrimitiveAsString

public void setPrimitiveAsString(boolean primitiveAsString)
Enables storing primitive types as their String values.

Parameters:
primitiveAsString – if true, then store all primitives as their string value.

setDefaultEncoding

public void setDefaultEncoding(java.lang.String defaultEncoding)
Sets default String encoding when storing primitives as Strings. Default is UTF-8.

Parameters:
defaultEncoding

setCompressEnable

public void setCompressEnable(boolean compressEnable)
Enable storing compressed data, provided it meets the threshold requirements. If enabled, data will be stored in compressed form if it is
longer than the threshold length set with setCompressThreshold(int)

The default is that compression is enabled.

Even if compression is disabled, compressed data will be automatically
decompressed.

Parameters:
compressEnabletrue to enable compression, false to disable compression

setCompressThreshold

public void setCompressThreshold(long compressThreshold)
Sets the required length for data to be considered for compression. If the length of the data to be stored is not equal or larger than this value, it will not be compressed. This defaults to 15 KB.

Parameters:
compressThreshold – required length of data to consider compression

keyExists

public boolean keyExists(java.lang.String key)
Checks to see if key exists in cache.

Parameters:
key – the key to look for
Returns:
true if key found in cache, false if not (or if cache is down)

delete

public boolean delete(java.lang.String key)
Deletes an object from cache given cache key.

Parameters:
key – the key to be removed
Returns:
true, if the data was deleted successfully

delete

public boolean delete(java.lang.String key,                      java.util.Date expiry)
Deletes an object from cache given cache key and expiration date.

Parameters:
key – the key to be removed
expiry – when to expire the record.
Returns:
true, if the data was deleted successfully

delete

public boolean delete(java.lang.String key,                      java.lang.Integer hashCode,                      java.util.Date expiry)
Deletes an object from cache given cache key, a delete time, and an optional hashcode. The item is immediately made non retrievable.
Keep in mind add and replace
will fail when used with the same key will fail, until the server reaches the
specified time. However, set will succeed,
and the new value will not be deleted.

Parameters:
key – the key to be removed
hashCode – if not null, then the int hashcode to use
expiry – when to expire the record.
Returns:
true, if the data was deleted successfully

set

public boolean set(java.lang.String key,                   java.lang.Object value)
Stores data on the server; only the key and the value are specified.

Parameters:
key – key to store data under
value – value to store
Returns:
true, if the data was successfully stored

set

public boolean set(java.lang.String key,                   java.lang.Object value,                   java.lang.Integer hashCode)
Stores data on the server; only the key and the value are specified.

Parameters:
key – key to store data under
value – value to store
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

set

public boolean set(java.lang.String key,                   java.lang.Object value,                   java.util.Date expiry)
Stores data on the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
Returns:
true, if the data was successfully stored

set

public boolean set(java.lang.String key,                   java.lang.Object value,                   java.util.Date expiry,                   java.lang.Integer hashCode)
Stores data on the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

add

public boolean add(java.lang.String key,                   java.lang.Object value)
Adds data to the server; only the key and the value are specified.

Parameters:
key – key to store data under
value – value to store
Returns:
true, if the data was successfully stored

add

public boolean add(java.lang.String key,                   java.lang.Object value,                   java.lang.Integer hashCode)
Adds data to the server; the key, value, and an optional hashcode are passed in.

Parameters:
key – key to store data under
value – value to store
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

add

public boolean add(java.lang.String key,                   java.lang.Object value,                   java.util.Date expiry)
Adds data to the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
Returns:
true, if the data was successfully stored

add

public boolean add(java.lang.String key,                   java.lang.Object value,                   java.util.Date expiry,                   java.lang.Integer hashCode)
Adds data to the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

replace

public boolean replace(java.lang.String key,                       java.lang.Object value)
Updates data on the server; only the key and the value are specified.

Parameters:
key – key to store data under
value – value to store
Returns:
true, if the data was successfully stored

replace

public boolean replace(java.lang.String key,                       java.lang.Object value,                       java.lang.Integer hashCode)
Updates data on the server; only the key and the value and an optional hash are specified.

Parameters:
key – key to store data under
value – value to store
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

replace

public boolean replace(java.lang.String key,                       java.lang.Object value,                       java.util.Date expiry)
Updates data on the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
Returns:
true, if the data was successfully stored

replace

public boolean replace(java.lang.String key,                       java.lang.Object value,                       java.util.Date expiry,                       java.lang.Integer hashCode)
Updates data on the server; the key, value, and an expiration time are specified.

Parameters:
key – key to store data under
value – value to store
expiry – when to expire the record
hashCode – if not null, then the int hashcode to use
Returns:
true, if the data was successfully stored

set

private boolean set(java.lang.String cmdname,                    java.lang.String key,                    java.lang.Object value,                    java.util.Date expiry,                    java.lang.Integer hashCode,                    boolean asString)
Stores data to cache. If data does not already exist for this key on the server, or if the key is being
deleted, the specified value will not be stored.
The server will automatically delete the value when the expiration time has been reached.

If compression is enabled, and the data is longer than the compression threshold
the data will be stored in compressed form.

As of the current release, all objects stored will use java serialization.

Parameters:
cmdname – action to take (set, add, replace)
key – key to store cache under
value – object to cache
expiry – expiration
hashCode – if not null, then the int hashcode to use
asString – store this object as a string?
Returns:
true/false indicating success

storeCounter

public boolean storeCounter(java.lang.String key,                            long counter)
Store a counter to memcached given a key

Parameters:
key – cache key
counter – number to store
Returns:
true/false indicating success

storeCounter

public boolean storeCounter(java.lang.String key,                            java.lang.Long counter)
Store a counter to memcached given a key

Parameters:
key – cache key
counter – number to store
Returns:
true/false indicating success

storeCounter

public boolean storeCounter(java.lang.String key,                            java.lang.Long counter,                            java.lang.Integer hashCode)
Store a counter to memcached given a key

Parameters:
key – cache key
counter – number to store
hashCode – if not null, then the int hashcode to use
Returns:
true/false indicating success

getCounter

public long getCounter(java.lang.String key)
Returns value in counter at given key as long.

Parameters:
key – cache ket
Returns:
counter value or -1 if not found

getCounter

public long getCounter(java.lang.String key,                       java.lang.Integer hashCode)
Returns value in counter at given key as long.

Parameters:
key – cache ket
hashCode – if not null, then the int hashcode to use
Returns:
counter value or -1 if not found

incr

public long incr(java.lang.String key)
Increment the value at the specified key by 1, and then return it.

Parameters:
key – key where the data is stored
Returns:
-1, if the key is not found, the value after incrementing otherwise

incr

public long incr(java.lang.String key,                 long inc)
Increment the value at the specified key by passed in val.

Parameters:
key – key where the data is stored
inc – how much to increment by
Returns:
-1, if the key is not found, the value after incrementing otherwise

incr

public long incr(java.lang.String key,                 long inc,                 java.lang.Integer hashCode)
Increment the value at the specified key by the specified increment, and then return it.

Parameters:
key – key where the data is stored
inc – how much to increment by
hashCode – if not null, then the int hashcode to use
Returns:
-1, if the key is not found, the value after incrementing otherwise

decr

public long decr(java.lang.String key)
Decrement the value at the specified key by 1, and then return it.

Parameters:
key – key where the data is stored
Returns:
-1, if the key is not found, the value after incrementing otherwise

decr

public long decr(java.lang.String key,                 long inc)
Decrement the value at the specified key by passed in value, and then return it.

Parameters:
key – key where the data is stored
inc – how much to increment by
Returns:
-1, if the key is not found, the value after incrementing otherwise

decr

public long decr(java.lang.String key,                 long inc,                 java.lang.Integer hashCode)
Decrement the value at the specified key by the specified increment, and then return it.

Parameters:
key – key where the data is stored
inc – how much to increment by
hashCode – if not null, then the int hashcode to use
Returns:
-1, if the key is not found, the value after incrementing otherwise

incrdecr

private long incrdecr(java.lang.String cmdname,                      java.lang.String key,                      long inc,                      java.lang.Integer hashCode)
Increments/decrements the value at the specified key by inc. Note that the server uses a 32-bit unsigned integer, and checks for
underflow. In the event of underflow, the result will be zero. Because
Java lacks unsigned types, the value is returned as a 64-bit integer.
The server will only decrement a value if it already exists;
if a value is not found, -1 will be returned.

Parameters:
cmdname – increment/decrement
key – cache key
inc – amount to incr or decr
hashCode – if not null, then the int hashcode to use
Returns:
new value or -1 if not exist

get

public java.lang.Object get(java.lang.String key)
Retrieve a key from the server, using a specific hash. If the data was compressed or serialized when compressed, it will automatically
be decompressed or serialized, as appropriate. (Inclusive or)

Non-serialized data will be returned as a string, so explicit conversion to
numeric types will be necessary, if desired

Parameters:
key – key where data is stored
Returns:
the object that was previously stored, or null if it was not previously stored

get

public java.lang.Object get(java.lang.String key,                            java.lang.Integer hashCode)
Retrieve a key from the server, using a specific hash. If the data was compressed or serialized when compressed, it will automatically
be decompressed or serialized, as appropriate. (Inclusive or)

Non-serialized data will be returned as a string, so explicit conversion to
numeric types will be necessary, if desired

Parameters:
key – key where data is stored
hashCode – if not null, then the int hashcode to use
Returns:
the object that was previously stored, or null if it was not previously stored

get

public java.lang.Object get(java.lang.String key,                            java.lang.Integer hashCode,                            boolean asString)
Retrieve a key from the server, using a specific hash. If the data was compressed or serialized when compressed, it will automatically
be decompressed or serialized, as appropriate. (Inclusive or)

Non-serialized data will be returned as a string, so explicit conversion to
numeric types will be necessary, if desired

Parameters:
key – key where data is stored
hashCode – if not null, then the int hashcode to use
asString – if true, then return string val
Returns:
the object that was previously stored, or null if it was not previously stored

getMultiArray

public java.lang.Object[] getMultiArray(java.lang.String[] keys)
Retrieve multiple objects from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – String array of keys to retrieve
Returns:
Object array ordered in same order as key array containing results

getMultiArray

public java.lang.Object[] getMultiArray(java.lang.String[] keys,                                        java.lang.Integer[] hashCodes)
Retrieve multiple objects from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – String array of keys to retrieve
hashCodes – if not null, then the Integer array of hashCodes
Returns:
Object array ordered in same order as key array containing results

getMultiArray

public java.lang.Object[] getMultiArray(java.lang.String[] keys,                                        java.lang.Integer[] hashCodes,                                        boolean asString)
Retrieve multiple objects from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – String array of keys to retrieve
hashCodes – if not null, then the Integer array of hashCodes
asString – if true, retrieve string vals
Returns:
Object array ordered in same order as key array containing results

getMulti

public java.util.Map getMulti(java.lang.String[] keys)
Retrieve multiple objects from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – String array of keys to retrieve
Returns:
a hashmap with entries for each key is found by the server, keys that are not found are not entered into the hashmap, but attempting to retrieve them from the hashmap gives you null.

getMulti

public java.util.Map getMulti(java.lang.String[] keys,                              java.lang.Integer[] hashCodes)
Retrieve multiple keys from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – keys to retrieve
hashCodes – if not null, then the Integer array of hashCodes
Returns:
a hashmap with entries for each key is found by the server, keys that are not found are not entered into the hashmap, but attempting to retrieve them from the hashmap gives you null.

getMulti

public java.util.Map getMulti(java.lang.String[] keys,                              java.lang.Integer[] hashCodes,                              boolean asString)
Retrieve multiple keys from the memcache. This is recommended over repeated calls to get(), since it
is more efficient.

Parameters:
keys – keys to retrieve
hashCodes – if not null, then the Integer array of hashCodes
asString – if true then retrieve using String val
Returns:
a hashmap with entries for each key is found by the server, keys that are not found are not entered into the hashmap, but attempting to retrieve them from the hashmap gives you null.

loadItems

private void loadItems(SockIOPool.SockIO sock,                       java.util.Map hm,                       boolean asString)                throws java.io.IOException
This method loads the data from cache into a Map. Pass a SockIO object which is ready to receive data and a HashMap
to store the results.

Parameters:
sock – socket waiting to pass back data
hm – hashmap to store data into
asString – if true, and if we are using NativehHandler, return string val
Throws:
java.io.IOException – if io exception happens while reading from socket

flushAll

public boolean flushAll()
Invalidates the entire cache. Will return true only if succeeds in clearing all servers.

Returns:
success true/false

flushAll

public boolean flushAll(java.lang.String[] servers)
Invalidates the entire cache. Will return true only if succeeds in clearing all servers. If pass in null, then will try to flush all servers.

Parameters:
servers – optional array of host(s) to flush (host:port)
Returns:
success true/false

stats

public java.util.Map stats()
Retrieves stats for all servers. Returns a map keyed on the servername. The value is another map which contains stats with stat name as key and value as value.

Returns:
Stats map

stats

public java.util.Map stats(java.lang.String[] servers)
Retrieves stats for passed in servers (or all servers). Returns a map keyed on the servername. The value is another map which contains stats with stat name as key and value as value.

Parameters:
servers – string array of servers to retrieve stats from, or all if this is null
Returns:
Stats map

statsItems

public java.util.Map statsItems()
Retrieves stats items for all servers. Returns a map keyed on the servername. The value is another map which contains item stats with itemname:number:field as key and value as value.

Returns:
Stats map

statsItems

public java.util.Map statsItems(java.lang.String[] servers)
Retrieves stats for passed in servers (or all servers). Returns a map keyed on the servername. The value is another map which contains item stats with itemname:number:field as key and value as value.

Parameters:
servers – string array of servers to retrieve stats from, or all if this is null
Returns:
Stats map

statsSlabs

public java.util.Map statsSlabs()
Retrieves stats items for all servers. Returns a map keyed on the servername. The value is another map which contains slabs stats with slabnumber:field as key and value as value.

Returns:
Stats map

statsSlabs

public java.util.Map statsSlabs(java.lang.String[] servers)
Retrieves stats for passed in servers (or all servers). Returns a map keyed on the servername. The value is another map which contains slabs stats with slabnumber:field as key and value as value.

Parameters:
servers – string array of servers to retrieve stats from, or all if this is null
Returns:
Stats map

statsCacheDump

public java.util.Map statsCacheDump(int slabNumber)
Retrieves items cachedump for all servers. Returns a map keyed on the servername. The value is another map which contains cachedump stats with the cachekey as key and byte size and unix timestamp as value.

Parameters:
slabNumber – the item number of the cache dump
Returns:
Stats map

statsCacheDump

public java.util.Map statsCacheDump(java.lang.String[] servers,                                    int slabNumber)
Retrieves stats for passed in servers (or all servers). Returns a map keyed on the servername. The value is another map which contains cachedump stats with the cachekey as key and byte size and unix timestamp as value.

Parameters:
servers – string array of servers to retrieve stats from, or all if this is null
slabNumber – the item number of the cache dump
Returns:
Stats map

stats

private java.util.Map stats(java.lang.String[] servers,                            java.lang.String command,                            java.lang.String lineStart)
2006年08月08日

开发前的等待好似黎明前的黑暗,是那样的恐怖。都在磨拳擦掌为了迎接开发,但是准备又有什么用呢,到时候问题还是会像想象中的一样劈头盖脸的砸下来,等得有点害怕,害怕做不好。

2006年08月07日

SQUID防图片,MP3盗链

Squid 提供强大的acl机制,能够方便地做到图片,MP3防盗链。下面是相关配置(以mop.com为例):

acl legalreferer referer_regex ^http://2006.mop.com ^http://[a-z].*\.mop\.comacl picurl url_regex -i \.bmp$ \.png$ \.jpg$ \.gif$ \.jpeg$ \.rar$ \.wmv$ \.mp3$ \.rm$ \.avi$ \.asf$ \.mpg$ \.mpeg$ \.rmvb$ \.wma$http_access deny !legalreferer picurl

如还想允许对视频、音频文件在线播放,就用下面的配置:

acl legalreferer referer_regex ^http://2006.mop.com/ ^http://[a-z].*\.mop\.comacl picurl url_regex -i \.bmp$ \.png$ \.jpg$ \.gif$ \.jpeg$ \.rar$http_access deny !legalreferer picurlacl legalplayer browser -i ^nsplayer ^contype$ ^rma ^windows-media-player ^foobar2000acl wmvurl url_regex -i \.wmv$ \.mp3$ \.rm$ \.avi$ \.asf$ \.mpg$ \.mpeg$ \.rmvb$ \.wma$http_access allow legalplayer wmvurlhttp_access deny !legalreferer wmvurl

SQUID refresh_pattern详解

refresh_pattern 大概是 squid 最有意思但最不好懂的配置参数了,经过看书,大概明白如何使用,写出来贡献。

记住refresh_pattern 只对后端没设置Expires过期时间的页面起作用,比如论坛页面;而对类似apache mod_expires 设置过的页面不起作用。

说明之前,先将个概念LM,LM就是页面Header里时间(Date)和Last-Modified时间的差。Date一般是Squid从后面取页面的时间,Last-Modified 一般是页面生成时间。

refresh_pattern 的语法是

refresh_pattern [-i] regexp min percent max [options]

regexp 就不讲了,大家都明白的;)

min, max的单位是分钟,percent就是百分比。

refresh_pattern 的算法如下:(当前时间定义为CURRENT_DATE)
1) If ((CURRENT_DATE-DATE(就是LM里定义的时间)) < min),cache是新鲜的
2) else if ((CURRENT_DATE-DATE) < (min + (max-min)*percent),cache是新鲜的
3) else cache是过期的
cache过期就需要从后面server取新鲜内容。
<img src="[External Link]http://wk.mop.com/UploadFile/files.xml?action=download&file=refresh_pattern.png">
如果希望页面一进入cache就不删除,直到被主动purge掉为止,可以加上ignore-reload选项
一般情况可以使用 reload-into-ims。
举例:

refresh_pattern -i \.gif$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.jpg$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.png$   1440    50%     2880      ignore-reload

refresh_pattern -i \.mp3$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.wmv$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.rm$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.swf$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.mpeg$   1440    50%     2880      ignore-reloadrefresh_pattern -i \.wma$   1440    50%     2880      ignore-reload

refresh_pattern -i \.css$ 10 50% 60 reload-into-imsrefresh_pattern -i \.js$ 10 50% 60 reload-into-imsrefresh_pattern -i \.xml$ 10 50% 30 reload-into-ims