Data storage and caching 2-memcached-C

1.redis

2.memcached

3.MongoDB



2.memcached The
Memcached daemon is written in c and is a high-performance distributed memory object caching system

2.1 memcached installation
http://s3.amazonaws.com/downloads.northscale.com/memcached -win32-1.4.4-14.zip
http://s3.amazonaws.com/downloads.northscale.com/memcached-win64-1.4.4-14.zip
download and unzip memcached-win32-1.4.4-14. zip to memcached and overwrite the 3 files in memcached-win64-1.4.4-14.zip with the files in memcached.


#Enter the memcached root directory and register as a windows service:
D:\service\memcached>memcached.exe -d install

#Enter the memcached root directory to check whether the installation is successful:
D:\service\memcached>memcached -h
If the parameters are returned, the installation Success #start

service
> net start memcached

or #start

service
D:\service\memcached>memcached.exe -d start

#Test whether the startup is successful
telnet 127.0.0.1 11211 #Other

systems and commands or parameters:
memcached.exe -d stop

memcached.exe -d uninstall

-m Maximum memory usage, in MB. The default is 64MB
-c the maximum number of simultaneous connections, the default is 1024
-p listening port


For example :
> memcached.exe -p 10000 -m 512 -d start


2.2 memcached uses -client
> telnet 127.0.0.1 11211
client connection server The


command format is :

<command name> <key> <flags> <exptime> <bytes>//Note, remember to press Enter here
<data block>

<bytes> is the length of your input <data block>, you must enter the same length of characters and return stored , return an error:
CLIENT_ERROR bad data chunk

such as:
#memcached server information
>stats

#Add value
>add key 0 0 2
>12
> stored #Get

value
>get key #Modify

>
set key 0 10 2
>13
>stored



2.3 memcached uses -java
https://github.com/gwhalin/Memcached-Java-Client

to add jar:

<dependency>
	    <groupId>com.whalin</groupId>
	    <artifactId>Memcached-Java-Client</artifactId>
	    <version>3.0.2</version>
	</dependency>

package com.byron.memcached.client;

import com.whalin.MemCached.MemCachedClient;
import com.whalin.MemCached.SockIOPool;

public class MemCachedTest {
	public static void main(String[] args) {
        // SockIOPool initialization
        String[] servers = { "127.0.0.1:11211" };
        SockIOPool pool = SockIOPool.getInstance();
        pool.setServers(servers);
        pool.setFailover(true);
        pool.setInitConn(10);
        pool.setMinConn(5);
        pool.setMaxConn(250);
        pool.setMaintSleep(30);
        pool.setNagle(false);
        pool.setSocketTO(3000);
        pool.setAliveCheck(true);
        pool.initialize();
        // New client: default from
        MemCachedClient memCachedClient = new MemCachedClient();
        for (int i = 0; i < 10; i++) {
            // adding data
            boolean success = memCachedClient.set("" + i, "Hello!");
            // retrieve data
            String result = (String) memCachedClient.get("" + i);
            System.out.println(String.format("set( %d ): %s", i, success));
            System.out.println(String.format("get( %d ): %s", i, result));
        }
    }
}

2.4 Memcached uses -hibernate . In
the influence of hibernate, hibernate will come to memcached. Since I have not used hibernate for a long time, I have been using ibatis, so I will no longer build an instance.

Memcached is an object cache server, so it is a good scene to integrate with hibernate. This is also an advantage compared to redis


2.5 Memcached distributed principle






Reference website:
JAVA client API calls memcached in two ways
http://www.cnblogs.com/longshiyVip/p/4889817.html

http://www.cnblogs .com/sunniest/p/4154209.html

Memcached and Memcache installation (64-bit win7)
http://www.cnblogs.com/wujuntian/p/4791220.html

telnet memcached error: "CLIENT_ERROR bad data chunk"
http:// f.dataguru.cn/thread-46013-1-1.html