Cache that expires in the blink of an eye

This package contains a helper function (and a Facade should you prefer that) called blink that can cache values. The cache only spans the length of a single request.

blink()->put('key', 'value');

blink()->get('key'); // Returns 'value'
blink()->get('prefix*'); // Returns an array of values whose keys start with 'prefix'

// once will only execute the given callable if the given key didn't exist yet
// once will only execute the given callable if the given key didn't exist yet
$expensiveFunction = function() {
   return rand();
});
blink()->once('random', $expensiveFunction); // returns random number
blink()->once('random', $expensiveFunction); // returns the same number

blink()->has('key'); // Returns true
blink()->has('prefix*'); // Returns true if the blink contains a key that starts with 'prefix'

// Specify a default value for when the specified key does not exist
blink()->get('non existing key', 'default') // Returns 'default'

blink()->put('anotherKey', 'anotherValue');

// Put multiple items in one go
blink()->put(['ringo' => 'drums', 'paul' => 'bass']);

blink()->all(); // Returns an array with all items

blink()->forget('key'); // Removes the item
blink()->forget('prefix*'); // Forget all items of which the key starts with 'prefix'

blink()->flush(); // Empty the entire blink

blink()->flushStartingWith('somekey'); // Remove all items whose keys start with "somekey"

blink()->increment('number'); // blink()->get('number') will return 1 
blink()->increment('number'); // blink()->get('number') will return 2
blink()->increment('number', 3); // blink()->get('number') will return 5

// Blink implements ArrayAccess
blink()['key'] = 'value';
blink()['key']; // Returns 'value'
isset(blink()['key']); // Returns true
unset(blink()['key']); // Equivalent to removing the value

// Blink implements Countable
count(blink()); // Returns 0
blink()->put('key', 'value');
count(blink()); // Returns 1

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Installation

You can install the package via composer:

composer require spatie/laravel-blink

To enable the package, register the service provider, and optionally register the facade:

// config/app.php

'providers' => [
    // ...
    Spatie\LaravelBlink\BlinkServiceProvider::class,
],

'aliases' => [
    ...
    'Blink' => Spatie\LaravelBlink\BlinkFacade::class,
],

Usage

A Blink instance can just be newed up.

$blink = new \Spatie\Blink\Blink()

You can call the following methods on it:

put

/**
 * Put a value in the blink cache.
 *
 * @param string|array $name
 * @param string|int|null $value
 * 
 * @return $this
 */
public function put($name, $value = null)

get

/**
 * Get a value from the blink cache.
 *
 * This function has support for the '*' wildcard.
 *
 * @param string $name
 *
 * @return null|string
 */
public function get(string $name)

has

/*
 * Determine if the blink cache has a value for the given name.
 *
 * This function has support for the '*' wildcard.
 */
public function has(string $name) : bool

once

/**
 * Only if the given key is not present in the blink cache the callable will be executed.
 * 
 * The result of the callable will be stored in the given key and returned.
 * 
 * @param $key
 * @param callable $callable
 *
 * @return mixed
 */

You can use this to avoid using static variables to cache stuff.

This piece of code

function foo()
{
    static $result = null;
    
    if (is_null($result) {
        $result = ...// do some expensive stuff here
    }
    
    return $result;
}

can be rewritten to

function foo()
{
    return blink()->once('fooCache', function() {
       return ... // do some expensive stuff here
    });
}

all

/*
* Get all values in the blink cache.
*/
public function all() : array

allStartingWith

/**
 * Get all values from the blink cache which keys start with the given string.
 *
 * @param string $startingWith
 *
 * @return array
*/
public function allStartingWith(string $startingWith = '') : array

forget

/**
 * Forget a value from the blink cache.
 *
 * This function has support for the '*' wildcard.
 *
 * @param string $key
 *
 * @return $this
 */
public function forget(string $key)

flush

/**
 * Flush all values from the blink cache.
 *
 * @return $this
 */
 public function flush()

flushStartingWith

/**
 * Flush all values from the blink cache which keys start with the specified value.
 *
 * @param string $startingWith
 *
 * @return $this
 */
 public function flushStartingWith(string $startingWith)

pull

/**
 * Get and forget a value from the blink cache.
 *
 * This function has support for the '*' wildcard.
 *
 * @param string $name 
 *
 * @return null|string
 */
public function pull(string $name)

increment

/**
 * Increment a value from the blink cache.
 *
 * @param string $name
 * @param int $by
 *
 * @return int|null|string
 */
 public function increment(string $name, int $by = 1)

decrement

/**
 * Decrement a value from the blink cache.
 *
 * @param string $name
 * @param int $by
 *
 * @return int|null|string
 */
 public function decrement(string $name, int $by = 1)

Changelog

Please see CHANGELOG for more information on what has changed recently.

Testing

$ composer test

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email [email protected] instead of using the issue tracker.

Credits

• Freek Van der Herten
• All Contributors

License

The MIT License (MIT). Please see License File for more information.