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Commitd512875

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Updated http_cache/* articles to Symfony 4
1 parent7699ca2 commitd512875

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4 files changed

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‎http_cache.rst‎

Lines changed: 12 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -81,18 +81,15 @@ Enabling the proxy is easy: each application comes with a caching kernel (``AppC
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that wraps the default one (``AppKernel``). The caching Kernel *is* the reverse
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proxy.
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84-
To enable caching, modify the code of your front controller. You can also make these
85-
changes to ``index.php`` to add caching to the ``dev`` environment::
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To enable caching, modify the code of your ``index.php`` front controller::
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// public/index.php
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use Symfony\Component\HttpFoundation\Request;
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// ...
91-
$kernel = new AppKernel('prod', false);
92-
$kernel->loadClassCache();
90+
$kernel = new Kernel($_SERVER['APP_ENV'] ?? 'dev', $_SERVER['APP_DEBUG'] ?? false);
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94-
// add (or uncomment) this new line!
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// wrap the default Kernel with the AppCache one
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// add (or uncomment) this line to wrap the default Kernel with the AppCache one
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$kernel = new AppCache($kernel);
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$request = Request::createFromGlobals();
@@ -120,7 +117,9 @@ finely tuned via a set of options you can set by overriding the
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:method:`Symfony\\Bundle\\FrameworkBundle\\HttpCache\\HttpCache::getOptions`
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method::
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// app/AppCache.php
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// src/AppCache.php
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namespace App;
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use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache;
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class AppCache extends HttpCache
@@ -137,10 +136,9 @@ method::
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For a full list of the options and their meaning, see the
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:method:`HttpCache::__construct() documentation <Symfony\\Component\\HttpKernel\\HttpCache\\HttpCache::__construct>`.
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When you're in debug mode (either because your booting a ``debug`` kernel, like
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in ``index.php`` *or* you manually set the ``debug`` option to true), Symfony
142-
automatically adds an ``X-Symfony-Cache`` header to the response. Use this to get
143-
information about cache hits and misses.
139+
When you're in debug mode (the second argument of ``Kernel`` constructor in the
140+
front controller is ``true``), Symfony automatically adds an ``X-Symfony-Cache``
141+
header to the response. Use this to get information about cache hits and misses.
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.. _http-cache-symfony-versus-varnish:
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@@ -150,7 +148,7 @@ information about cache hits and misses.
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website or when you deploy your website to a shared host where you cannot
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install anything beyond PHP code. But being written in PHP, it cannot
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be as fast as a proxy written in C.
153-
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Fortunately, since all reverse proxies are effectively the same, you should
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be able to switch to something more robust - like Varnish - without any problems.
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See:doc:`How to use Varnish</http_cache/varnish>`
@@ -192,7 +190,7 @@ These four headers are used to help cache your responses via *two* different mod
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All of the HTTP headers you'll read about are *not* invented by Symfony! They're
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part of an HTTP specification that's used by sites all over the web. To dig deeper
195-
into HTTP Caching, check out the documents `RFC 7234 - Caching`_ and
193+
into HTTP Caching, check out the documents `RFC 7234 - Caching`_ and
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`RFC 7232 - Conditional Requests`_.
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As a web developer, you are strongly urged to read the specification. Its
@@ -214,7 +212,7 @@ The *easiest* way to cache a response is by caching it for a specific amount of
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use Symfony\Component\HttpFoundation\Response;
215213
// ...
216214

217-
public functionindexAction()
215+
public functionindex()
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{
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// somehow create a Response object, like by rendering a template
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$response = $this->render('blog/index.html.twig', []);

‎http_cache/cache_invalidation.rst‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -50,7 +50,7 @@ cache instead of going to the application to get a response.
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Here is how you can configure the Symfony reverse proxy to support the
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``PURGE`` HTTP method::
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53-
//app/AppCache.php
53+
//src/AppCache.php
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use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache;
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use Symfony\Component\HttpFoundation\Request;

‎http_cache/esi.rst‎

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -62,14 +62,14 @@ First, to use ESI, be sure to enable it in your application configuration:
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..code-block::yaml
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#app/config/config.yml
65+
# config/packages/framework.yaml
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framework:
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# ...
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esi:{ enabled: true }
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..code-block::xml
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72-
<!--app/config/config.xml-->
72+
<!-- config/packages/framework.xml-->
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<?xml version="1.0" encoding="UTF-8" ?>
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<containerxmlns="http://symfony.com/schema/dic/symfony"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
@@ -87,7 +87,7 @@ First, to use ESI, be sure to enable it in your application configuration:
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..code-block::php
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90-
//app/config/config.php
90+
// config/packages/framework.php
9191
$container->loadFromExtension('framework', array(
9292
// ...
9393
'esi' => array('enabled' => true),
@@ -104,7 +104,7 @@ independent of the rest of the page.
104104
// ...
105105
class DefaultController extends Controller
106106
{
107-
public functionaboutAction()
107+
public functionabout()
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{
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$response = $this->render('static/about.html.twig');
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// set the shared max age - which also marks the response as public
@@ -195,7 +195,7 @@ of the master page.
195195
// ...
196196
class NewsController extends Controller
197197
{
198-
public functionlatestAction($maxPerPage)
198+
public functionlatest($maxPerPage)
199199
{
200200
// ...
201201
$response->setSharedMaxAge(60);
@@ -220,14 +220,14 @@ that must be enabled in your configuration:
220220

221221
..code-block::yaml
222222
223-
#app/config/config.yml
223+
# config/packages/framework.yaml
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framework:
225225
# ...
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fragments:{ path: /_fragment }
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..code-block::xml
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230-
<!--app/config/config.xml-->
230+
<!-- config/packages/framework.xml-->
231231
<?xml version="1.0" encoding="UTF-8" ?>
232232
<containerxmlns="http://symfony.com/schema/dic/services"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
@@ -245,7 +245,7 @@ that must be enabled in your configuration:
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..code-block::php
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248-
//app/config/config.php
248+
// config/packages/framework.php
249249
$container->loadFromExtension('framework', array(
250250
// ...
251251
'fragments' => array('path' => '/_fragment'),

‎http_cache/validation.rst‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -66,7 +66,7 @@ To see a simple implementation, generate the ETag as the md5 of the content::
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6767
class DefaultController extends Controller
6868
{
69-
public functionhomepageAction(Request $request)
69+
public functionhomepage(Request $request)
7070
{
7171
$response = $this->render('static/homepage.html.twig');
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$response->setEtag(md5($response->getContent()));
@@ -131,7 +131,7 @@ header value::
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132132
class ArticleController extends Controller
133133
{
134-
public functionshowAction(Article $article, Request $request)
134+
public functionshow(Article $article, Request $request)
135135
{
136136
$author = $article->getAuthor();
137137

@@ -190,7 +190,7 @@ exposing a simple and efficient pattern::
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191191
class ArticleController extends Controller
192192
{
193-
public functionshowAction($articleSlug, Request $request)
193+
public functionshow($articleSlug, Request $request)
194194
{
195195
// Get the minimum information to compute
196196
// the ETag or the Last-Modified value

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