README

webclient/ext-cache

Cache extension for PSR-18 HTTP client.

Install

Install this package and your favorite psr-18 implementation, psr-17 implementation and cache implementation.

composer require webclient/ext-cache:^2.0

Using

<?php

use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\StreamFactoryInterface;
use Webclient\Cache\Contract\CacheInterface;
use Webclient\Extension\Cache\Client;
use Webclient\Extension\Cache\CacheKeyFactory\CacheKeyFactoryInterface;

/** 
 * @var ClientInterface $client Your PSR-18 HTTP Client
 * @var ResponseFactoryInterface $responseFactory Your PSR-17 response factory
 * @var StreamFactoryInterface $streamFactory Your PSR-17 stream factory
 * @var CacheInterface $cache Your cache adapter
 * @var CacheKeyFactoryInterface|null $cacheKeyFactory key factory for your cache
 */
$http = new CacheClientDecorator(
    $client, 
    $responseFactory, 
    $streamFactory, 
    $cache,
    $cacheKeyFactory,
    'X-Private-Cache-Key-Header', // name of the header in which the private cache key is contained
    4096, // Maximal response size (with header). null for unlimited.
    2147483648 // maximal TTL of cache items
);

/** @var RequestInterface $request */
$response = $http->sendRequest($request);

/** @var RequestInterface $request */
$response = $http->sendRequest($request);

/** 
 * For using private cache add header `X-Private-Cache-Key-Header` (or your configured) to request.
 * header `X-Private-Cache-Key-Header` (or your configured) do not be sent to original http-client.
 */
$response = $http->sendRequest($request->withHeader('X-Private-Cache-Key-Header', ['private-key-for-current-user']));
 

Not handled requests

If the request contains If-None-Match, If-Match, If-Modified-Since, If-Unmodified-Since, or If-Range headers, then the response will be returned as is.

Partial Requests

Partial requests not supports.