A code kata to play around with cache interfaces

Ideas

• Sensible result handling (differentiating null from not found)
• Tagging with expiration
• Use Memcache, Redis, etc. protocols as heavily as possible
• CSL: caching specific language: store, load, expire, write through, write back, hit, miss
• Hashing strategies with mutiple storage backends
• Check and set (Memcache)
• Load/Save many
• Storage directors:
  • Size based
  • Hash based
  • Value/key based

Passing a success callback to Cache::load()

<?php
$cache->load('key', function(Kesch\Result $result) {
    if ($result->isHit()) {

    }
});

Returning a Result object

<?php
$result = $cache->load('key');
if ($result->isMiss()) {
    // Regenerate
}

Simply storing a value

<?php
$cache->store('key', 'value');

Storing a value by callback

<?php
$cache->store('key', function() {

});

Storing a value with a success callback for write-through caches

<?php
$cache->store('key', 'value', function($key, $value) {
    // Update another storage
});

Store key along with some tags

<?php
$cache->store(new Kesch\Key('test', array('tag1', 'tag2')), 'value');

Delete values with tags

<?php
$cache->delete(new Kesch\Tags(array('tag1', 'tag2')));