php5.3 installation libmemcached extension method and simple instance _php tutorial

Libmemcached is a memcached library, client library, C and C + + language implementation of the client library, with low memory occupancy, thread safety, and provides full support for memcached functionality. It also employs a variety of command-line tools: Memcat, Memflush, MEMRM, MemStat, and memslap (load generation). Library has been designed to let different hashing methods pair keys, split the keys, and use a unified hash distribution

Libmemcached-based PHP memcache client has many advantages

Hash Consistent storage
Multi Get/set
• Automatically hashes the key to int, bypassing the limit of Memcache key string by default less than 255Byte
Long time no server configuration, always thought that libmemcached PHP memcached has been included in the basic installation package, in the end also need to compile themselves. The whole installation process a lot of dark pits, tried several times to succeed

Two-Step installation

• Install libmemcached, target so and header files
• Install memcachedphp extensions
Libmemcaced is divided into two major versions of 0.x and 1.x, 1.x version from 2011-09-28 onwards, the compilation is very troublesome, need gcc4.0 above the special configuration, compile extremely slow. The 0.x version is much simpler, the highest version is 0.53, so choose Install 0.53

Acura always appear in pairs, PHP memcahed also starting from 2.1.0, requires libmemcached must be 1.0.x version

libmemcaced I use 0.53, that php-memcahed choose 2.0.0. Version maintenance of open source software is a lousy account.

Installing libmemcached

The code is as follows	Copy Code
wget https://launchpad.net/libmemcached/1.0/0.53/+download/libmemcached-0.53.tar.gz Tar Xvfz libmemcached-0.53.tar.gz CD libmemcached-0.53 ./configure--prefix=/opt/libmemcached Make && make install

Installing PHP Extensions

The code is as follows	Copy Code
wget http://pecl.php.net/get/memcached-2.0.0.tgz Tar zvxf memcached-2.0.0.tgz CD memcached-2.0.0/ ./configure--enable-memcached--with-php-config=/usr/local/php/bin/php-config--with-libmemcached-dir=/opt/ libmemcached/ Make && make install

Make install installs the memcached.so to ${php install dir}/extensions/no-debug-non-zts-20090626/, which differs depending on the PHP version

The last step, modify the php.ini, plus extension=memcached.so

With the face we have installed to see a simple example

The code is as follows

Copy Code

#include 2 #include 3 #include 4 5 using namespace Std; 6 7 int main (int argc,char *argv[]) 8 { 9//connect Server Ten Memcached_st *MEMC; Memcached_return RC; Memcached_server_st *server; time_t expiration; uint32_t flags; 15 MEMC = Memcached_create (NULL); + Server = Memcached_server_list_append (NULL, "localhost", 11211,&AMP;RC); Rc=memcached_server_push (Memc,server); Memcached_server_list_free (server); 20 string key = "Key"; String value = "Value"; size_t value_length = Value.length (); size_t key_length = Key.length (); 25 26 //save data Rc=memcached_set (Memc,key.c_str (), Key.length (), Value.c_str (), Value.length (), expiration,flags); if (rc==memcached_success) 30 { cout<< "Save Data:" < <><"> <> 32} 33 //get data char* result = Memcached_get (Memc,key.c_str (), KEY_LENGTH,&AMP;VALUE_LENGTH,&AMP;FLAGS,&AMP;RC); if (rc = = memcached_success) 37 { cout<< "Get Value:" < <><"> <> 39} 40 //delete data Rc=memcached_delete (Memc,key.c_str (), key_length,expiration); if (rc==memcached_success) 44 { cout<< "Delete key:" < <><"> <> 46} 47 //free Memcached_free (MEMC); return 0; 51} 52 53 Compilation: g++-O testmemcached testmemcached.cpp-lmemcached Run:./testmemcached Result: Save data:value sucessful! Get Value:value sucessful! Delete Key:key sucessful!

Precautions

It should be noted that libmemcached is not a libmemcache, they are two different client libraries, the former is now more active development, the latter has not been updated for a long time.

Memcached is a high-performance, distributed memory object caching system that reduces access to the database through memory data caching, thus increasing the speed of dynamic content application sites. Memcached official development released, just the application of the server-side program, it released the server-side connection read-write protocol, client implementation, according to the dynamic Content application site using the dynamic script different, but there are many, specific list, can view the official website.

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