Skip to content

Commit 67243ff

Browse files
weaverryanweaverryan
authored
proofing cache chapter updates
1 parent 808453a commit 67243ff

File tree

1 file changed

+62
-107
lines changed

1 file changed

+62
-107
lines changed

‎cache.rst

Lines changed: 62 additions & 107 deletions
Original file line numberDiff line numberDiff line change
@@ -175,10 +175,10 @@ will create pool with service id of ``cache.[type]``
175175
],
176176
]);
177177
178-
Creating Custom Pools
179-
---------------------
178+
Creating Custom (Namespaced) Pools
179+
----------------------------------
180180

181-
You can also create more customized pools. All you need is an adapter:
181+
You can also create more customized pools:
182182

183183
.. configuration-block::
184184

@@ -188,15 +188,34 @@ You can also create more customized pools. All you need is an adapter:
188188
framework:
189189
cache:
190190
default_memcached_provider: 'memcached://localhost'
191+
191192
pools:
193+
# creates a "custom_thing.cache" service
194+
# autowireable via "CacheInterface $customThingCache"
195+
# uses the "app" cache configuration
196+
custom_thing.cache:
197+
adapter: cache.app
198+
199+
# creates a "my_cache_pool" service
200+
# autowireable via "CacheInterface $myCachePool"
192201
my_cache_pool:
193202
adapter: cache.adapter.array
194-
cache.acme:
203+
204+
# uses the default_memcached_provider from above
205+
acme.cache:
195206
adapter: cache.adapter.memcached
196-
cache.foobar:
207+
208+
# control adapter's configuration
209+
foobar.cache:
197210
adapter: cache.adapter.memcached
198211
provider: 'memcached://user:[email protected]'
199212
213+
# uses the "foobar.cache" pool as its backend but controls
214+
# the lifetime and (like all pools) has a separate cache namespace
215+
short_cache:
216+
adapter: cache.foobar
217+
default_lifetime: 60
218+
200219
.. code-block:: xml
201220
202221
<!-- config/packages/cache.xml -->
@@ -209,9 +228,11 @@ You can also create more customized pools. All you need is an adapter:
209228
210229
<framework:config>
211230
<framework:cache default_memcached_provider="memcached://localhost">
231+
<framework:pool name="custom_thing.cache" adapter="cache.app"/>
212232
<framework:pool name="my_cache_pool" adapter="cache.adapter.array"/>
213-
<framework:pool name="cache.acme" adapter="cache.adapter.memcached"/>
214-
<framework:pool name="cache.foobar" adapter="cache.adapter.memcached" provider="memcached://user:[email protected]"/>
233+
<framework:pool name="acme.cache" adapter="cache.adapter.memcached"/>
234+
<framework:pool name="foobar.cache" adapter="cache.adapter.memcached" provider="memcached://user:[email protected]"/>
235+
<framework:pool name="short_cache" adapter="foobar.cache" default_lifetime="60"/>
215236
</framework:cache>
216237
</framework:config>
217238
</container>
@@ -223,107 +244,54 @@ You can also create more customized pools. All you need is an adapter:
223244
'cache' => [
224245
'default_memcached_provider' => 'memcached://localhost',
225246
'pools' => [
247+
'custom_thing.cache' => [
248+
'adapter' => 'cache.app',
249+
],
226250
'my_cache_pool' => [
227251
'adapter' => 'cache.adapter.array',
228252
],
229-
'cache.acme' => [
253+
'acme.cache' => [
230254
'adapter' => 'cache.adapter.memcached',
231255
],
232-
'cache.foobar' => [
233-
'adapter' => 'cache.adapter.memcached',
234-
'provider' => 'memcached://user:[email protected]',
235-
],
236-
],
237-
],
238-
]);
239-
240-
241-
The configuration above will create 3 services: ``my_cache_pool``, ``cache.acme``
242-
and ``cache.foobar``. The ``my_cache_pool`` pool is using the ArrayAdapter
243-
and the other two are using the :doc:`MemcachedAdapter </components/cache/adapters/memcached_adapter>`.
244-
The ``cache.acme`` pool is using the Memcached server on localhost and ``cache.foobar``
245-
is using the Memcached server at example.com.
246-
247-
Each pool will manage a set of independent cache keys: keys of different pools
248-
never collide even if they share the same backend. This is achieved by prefixing
249-
keys with a namespace. This namespace is generated by hashing the name of the
250-
pool, the name of the compiled container class and a configurable seed that XXX HOWTO LINK TO reference/configuration/framework.rst#prefix_seed? XXX
251-
defaults to the project directory.
252-
253-
For advanced configurations it could sometimes be useful to use a pool as an adapter.
254-
255-
.. configuration-block::
256-
257-
.. code-block:: yaml
258-
259-
# config/packages/cache.yaml
260-
framework:
261-
cache:
262-
app: my_configured_app_cache
263-
pools:
264-
my_cache_pool:
265-
adapter: cache.adapter.memcached
266-
provider: 'memcached://user:[email protected]'
267-
cache.short_cache:
268-
adapter: my_cache_pool
269-
default_lifetime: 60
270-
cache.long_cache:
271-
adapter: my_cache_pool
272-
default_lifetime: 604800
273-
my_configured_app_cache:
274-
# "cache.adapter.filesystem" is the default for "cache.app"
275-
adapter: cache.adapter.filesystem
276-
default_lifetime: 3600
277-
278-
.. code-block:: xml
279-
280-
<!-- config/packages/cache.xml -->
281-
<?xml version="1.0" encoding="UTF-8" ?>
282-
<container xmlns="http://symfony.com/schema/dic/services"
283-
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
284-
xmlns:framework="http://symfony.com/schema/dic/symfony"
285-
xsi:schemaLocation="http://symfony.com/schema/dic/services
286-
https://symfony.com/schema/dic/services/services-1.0.xsd">
287-
288-
<framework:config>
289-
<framework:cache app="my_cache_pool">
290-
<framework:pool name="my_cache_pool" adapter="cache.adapter.memcached" provider="memcached://user:[email protected]"/>
291-
<framework:pool name="cache.short_cache" adapter="my_cache_pool" default_lifetime="604800"/>
292-
<framework:pool name="cache.long_cache" adapter="my_cache_pool" default_lifetime="604800"/>
293-
<!-- "cache.adapter.filesystem" is the default for "cache.app" -->
294-
<framework:pool name="my_configured_app_cache" adapter="cache.adapter.filesystem" default_lifetime="3600"/>
295-
</framework:cache>
296-
</framework:config>
297-
</container>
298-
299-
.. code-block:: php
300-
301-
// config/packages/cache.php
302-
$container->loadFromExtension('framework', [
303-
'cache' => [
304-
'app' => 'my_configured_app_cache',
305-
'pools' => [
306-
'my_cache_pool' => [
256+
'foobar.cache' => [
307257
'adapter' => 'cache.adapter.memcached',
308258
'provider' => 'memcached://user:[email protected]',
309259
],
310-
'cache.short_cache' => [
311-
'adapter' => 'cache.adapter.memcached',
260+
'short_cache' => [
261+
'adapter' => 'foobar.cache',
312262
'default_lifetime' => 60,
313263
],
314-
'cache.long_cache' => [
315-
'adapter' => 'cache.adapter.memcached',
316-
'default_lifetime' => 604800,
317-
],
318-
'my_configured_app_cache' => [
319-
// "cache.adapter.filesystem" is the default for "cache.app"
320-
'adapter' => 'cache.adapter.filesystem',
321-
'default_lifetime' => 3600,
322-
],
323264
],
324265
],
325266
]);
326267
268+
Each pool manages a set of independent cache keys: keys of different pools
269+
*never* collide, even if they share the same backend. This is achieved by prefixing
270+
keys with a namespace that's generated by hashing the name of the pool, the name
271+
of the compiled container class and a :ref:`configurable seed<reference-cache-prefix-seed>`
272+
that defaults to the project directory.
273+
274+
Each custom pool becomes a service where the service id is the name of the pool
275+
(e.g. ``custom_thing.cache``). An autowiring alias is also created for each pool
276+
using the camel case version of its name - e.g. ``custom_thing.cache`` can be
277+
injected automatically by naming the argument ``$forecastCache`` and type-hinting it
278+
with either :class:`Symfony\\Contracts\\Cache\\CacheInterface` or
279+
``Psr\\Cache\\CacheItemPoolInterface``::
280+
281+
use Symfony\Contracts\Cache\CacheInterface;
282+
283+
// from a controller method
284+
public function listProducts(CacheInterface $customThingCache)
285+
{
286+
// ...
287+
}
288+
289+
// in a service
290+
public function __construct(CacheInterface $customThingCache)
291+
{
292+
// ...
293+
}
294+
327295
Custom Provider Options
328296
-----------------------
329297

@@ -401,19 +369,6 @@ and use that when configuring the pool.
401369
'timeout' => 10
402370
]);
403371
404-
Injecting a custom pool into your services
405-
------------------------------------------
406-
407-
Each custom pool is turned into a corresponding service with the exact same id as the
408-
name of the pool that you can reference in your service configuration files.
409-
410-
If you prefer using autowiring, a named autowiring alias is created for each pool
411-
using the camel case version of its name. This means that if you name a pool e.g.
412-
``forecast.cache``, you can have it injected automatically by naming the
413-
corresponding argument ``$forecastCache`` with its type-hint set to either
414-
``Symfony\\Contracts\\Cache\\CacheInterface`` or ``Psr\\Cache\\CacheItemPoolInterface``
415-
depending on the interfaces you want to use.
416-
417372
Creating a Cache Chain
418373
----------------------
419374

0 commit comments

Comments
 (0)