90 lines
2.0 KiB
Markdown
90 lines
2.0 KiB
Markdown
# Banker
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A Caching library implementing the PSR-6 and PSR-16 interfaces for several common cache backends
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## Cache Backends
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* Apcu
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* Memcached
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* Redis
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* Null - no persistence
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### Basic Usage (SimpleCache/PSR-16)
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```php
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<?php
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// $config is the configuration array
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// $logger is an optional psr/log compatible logger
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$cache = new Aviat\Banker\Teller($config, $logger);
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// Get a value from the cache, returning $defaultValue
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// if the value doesn't exist in the cache
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$value = $cache->get($key, $defaultValue);
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// Save a new value at the specified key
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$saved = $cache->set($key, 'newValue');
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```
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### Basic Usage (Pool/PSR-6)
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```php
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<?php
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// Create the pool
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// $config is the configuration array
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// $logger is an optional psr/log compatible logger
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$pool = new Aviat\Banker\Pool($config, $logger);
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// Grab an item from the cache
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$item = $pool->getItem('foo');
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// Was there a cache hit?
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if ( ! $item->isHit())
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{
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// ... Generation of value to cache
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$item->set($value);
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$item->save();
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}
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else
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{
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$value = $item->get();
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}
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```
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#### Configuration / Connection array
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The config array passed to the Pool class constructor determines
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which server to connect to. Regardless of the backend, the basic
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structure is like so:
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```php
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<?php
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$config = [
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'driver' => 'null', // null, apcu, redis, memcached
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'connection' => [
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// Optional (For some drivers):
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// driver setup, see below for the structure for each
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// driver
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],
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'options' => [
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// Optional:
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// Set additional driver-specific options, like persistence for
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// Memcached, or a prefix for Redis keys
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]
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];
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```
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Below are the connection arrays for each backend:
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Memcached:
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```php
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<?php
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$config['connection'] = [
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'host' => 'localhost', // hostname or socket
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'port' => 11211, // Port needs to be 0 if socket
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'persistent' => false, // Use persistent connection
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];
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```
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Redis:
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See [Predis](https://github.com/nrk/predis#connecting-to-redis) documentation. An empty array will connect to localhost on port 6379.
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Null, Apcu:
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No connection parameters |