Blob store

A simple interface to manage schema-free temporal persistent key/values. This was part of the Semantic MediaWiki code base and is now being deployed as independent library.

It is suggested to use either redis, riak, or mongodb as back-end provider depending on the use case.

Requirements

• PHP 5.3 or later
• Onoi/Cache ~1.1

Installation

The recommended installation method for this library is by either adding the dependency to your composer.json.

{
	"require": {
		"onoi/blob-store": "~1.2"
	}
}

Usage

class Foo {

	private $blobStore;

	public function __construct( BlobStore $blobStore ) {
		$this->blobStore = $blobStore;
	}

	public function doSomethingFor( $id ) {
		$container = $this->blobStore->read( md5( $id ) );

		$container->set( 'one', array( new \stdClass, 'Text' ) );

		$container->append(
			'one',
			new \stdClass
		);

		$container->delete( 'two' );

		$this->blobStore->save( $container );
	}
}

$cacheFactory = new CacheFactory();

$compositeCache = $cacheFactory->newCompositeCache( array(
	$cacheFactory->newFixedInMemoryLruCache(),
	$cacheFactory->newDoctrineCache( new \Doctrine\Common\Cache\RedisCache( ... ) )
) );

or

$compositeCache = $cacheFactory->newCompositeCache( array(
	$cacheFactory->newFixedInMemoryLruCache(),
	$cacheFactory->newMediaWikiCache( \ObjectCache::getInstance( 'redis' ) )
) );

$blobStore = new BlobStore( 'foo', $compositeCache );

$instance = new Foo( $blobStore );
$instance->doSomethingFor( 'bar' );

When creating an instance a namespace is required to specify the context of the storage in case the BlobStore is used for different use cases.

Contribution and support

If you want to contribute work to the project please subscribe to the developers mailing list and have a look at the contribution guidelinee. A list of people who have made contributions in the past can be found here.

• File an issue
• Submit a pull request

Tests

The library provides unit tests that covers the core-functionality normally run by the continues integration platform. Tests can also be executed manually using the composer phpunit command from the root directory.

Release notes

• 1.2.0 (2016-03-19)

• Added Container::addToLinkedList to maintain a linked list of interdependent containers (if the original container is removed then all linked containers will be expunged as well)

• 1.1.0 (2015-06-13)

• Removed tracking of internal ID list
• Added Container::setExpiryInSeconds

• 1.0.0 (2015-06-02)

• Initial release

License

GNU General Public License 2.0 or later.