yangyao/shm-cache

yet another php shm cache

dev-master 2019-04-16 07:33 UTC

Requires

• ext-shmop: *

Requires (Dev)

• phpunit/phpunit: 7.5.x-dev

MIT

• yangyao

README

yet another php cache based on share memory

how to use ?

install var composer

composer require yangyao/shm-cache

basic use .

$shm = new Yangyao\ShmCache\ShmHashMap();
$shm->create(0x2222);
$shm->set('hello','world');
$shm->get('hello');

master and salver

$masterKey = 0x2222;
$salverKey = 0x2223;
$key = 'hello';
// add key to master
$shmMaster = new Yangyao\ShmCache\ShmHashMap();
$shmMaster->create($masterKey);
$shmMaster->set('hello','world');
// add key to salver
$shmSalver = new Yangyao\ShmCache\ShmHashMap();
$shmSalver->create($salverKey);
$shmSalver->set('hello','world');
// use the reader
Yangyao\ShmCache\Reader::init($masterKey,$salverKey);
Yangyao\ShmCache\Reader::get($key);

cluster consistent

$server_1 = 0x2222;
$server_2 = 0x2223;

$key = 'hello';

$consistent = new Yangyao\ShmCache\ConsistentHash();
$consistent->addServer($server_1);
$consistent->addServer($server_2);

$server = $consistent->find($key);

$shm = new Yangyao\ShmCache\ShmHashMap();
$shm->attach($server);

// $shm->set($key,'world');

$data = $shm->get($key);

what's the principle ?

• based on hash arithmetic
• write data into share memory use php shmop extension

what's the data structure ?

head

data

all