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Rotua Panjaitan
yii2
Commits
bcdd8b26
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bcdd8b26
authored
Jun 26, 2014
by
Riverlet
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caching-data.md
docs/guide-zh-CN/caching-data.md
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docs/guide-zh-CN/caching-data.md
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@@ -24,7 +24,7 @@ if ($data === false) {
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@@ -24,7 +24,7 @@ if ($data === false) {
## 缓存组件 <a name="cache-components"></a>
## 缓存组件 <a name="cache-components"></a>
数据缓存需要称作“
*缓存组件*
”的东西提供支持,它代表着各种缓存存储
介质
,例如内存,文件,数据库。
数据缓存需要称作“
*缓存组件*
”的东西提供支持,它代表着各种缓存存储
器
,例如内存,文件,数据库。
缓存组件通常注册为应用程序组件,这样它们就可以接受全局性配置和调用。如下代码演示了如何配置
`cache`
缓存组件通常注册为应用程序组件,这样它们就可以接受全局性配置和调用。如下代码演示了如何配置
`cache`
应用程序组件使用两个
[
memcached
](
http://memcached.org/
)
服务器:
应用程序组件使用两个
[
memcached
](
http://memcached.org/
)
服务器:
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@@ -66,41 +66,30 @@ if ($data === false) {
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@@ -66,41 +66,30 @@ if ($data === false) {
> Tip: 你可以注册多个缓存组件,很多依赖缓存的类默认调用名为 `cache` 的组件(例如 [[yii\web\UrlManager]])。
> Tip: 你可以注册多个缓存组件,很多依赖缓存的类默认调用名为 `cache` 的组件(例如 [[yii\web\UrlManager]])。
### Supported Cache Storage <a name="supported-cache-storage"></a>
### 支持的缓存存储器 <a name="supported-cache-storage"></a>
Yii supports a wide range of cache storage. The following is a summary:
Yii 支持一系列缓存存储器,概况如下:
*
[
[yii\caching\ApcCache
]
]: uses PHP
[
APC
](
http://php.net/manual/en/book.apc.php
)
extension. This option can be
*
[
[yii\caching\ApcCache
]
]: 使用 PHP
[
APC
](
http://php.net/manual/en/book.apc.php
)
扩展。这个选项可以认为是集中式应用程序环境中(例如:单一服务器,没有独立的负载均衡器等)最快的缓存方案。
considered as the fastest one when dealing with cache for a centralized thick application (e.g. one
*
[
[yii\caching\DbCache
]
]: 使用一个数据库的表存储缓存数据。要使用这个缓存,你必须创建一个
[
[yii\caching\DbCache::cacheTable
]
] 对应的表。
server, no dedicated load balancers, etc.).
*
[
[yii\caching\DummyCache
]
]: 仅作为一个缓存占位符,不实现任何真正的缓存功能。
*
[
[yii\caching\DbCache
]
]: uses a database table to store cached data. To use this cache, you must
这个组件的目的是为了简化那些需要查询缓存有效性的代码。例如,在开发中如果服务器没有实际的缓存支持,你就可以用它配置一个缓存组件。
create a table as specified in
[
[yii\caching\DbCache::cacheTable
]
].
一个真正的缓存服务启用后,就可以切换为使用相应的缓存组件。两种条件下你都可以使用同样的代码
*
[
[yii\caching\DummyCache
]
]: serves as a cache placeholder which does no real caching.
`Yii::$app->cache->get($key)`
尝试从缓存中获取数据而不用担心
The purpose of this component is to simplify the code that needs to check the availability of cache.
`Yii::$app->cache`
可能是
`null`
。
For example, during development or if the server doesn't have actual cache support, you may configure
*
[
[yii\caching\FileCache
]
]: 使用标准文件存储缓存数据。这个特别适用于缓存大块数据,例如一个网页的内容。
a cache component to use this cache. When an actual cache support is enabled, you can switch to use
*
[
[yii\caching\MemCache
]
]: 使用 PHP
[
memcache
](
http://php.net/manual/en/book.memcache.php
)
和
the corresponding cache component. In both cases, you may use the same code
[
memcached
](
http://php.net/manual/en/book.memcached.php
)
扩展。这个选项可以认为是分布式应用程序环境中(例如:多台服务器,有负载均衡等)最快的缓存方案。
`Yii::$app->cache->get($key)`
to attempt retrieving data from the cache without worrying that
*
[
[yii\redis\Cache
]
]: 实现了一个基于
[
Redis
](
http://redis.io/
)
键值对存储器的缓存组件(需要 redis 2.6.12 及以上版本的支持 )。
`Yii::$app->cache`
might be
`null`
.
*
[
[yii\caching\WinCache
]
]: 使用 PHP
[
WinCache
](
http://iis.net/downloads/microsoft/wincache-extension
)
*
[
[yii\caching\FileCache
]
]: uses standard files to store cached data. This is particular suitable
(
[
另可参考
](
http://php.net/manual/en/book.wincache.php
)
) 扩展.
to cache large chunk of data, such as page content.
*
[
[yii\caching\XCache
]
]: 使用 PHP
[
XCache
](
http://xcache.lighttpd.net/
)
扩展。
*
[
[yii\caching\MemCache
]
]: uses PHP
[
memcache
](
http://php.net/manual/en/book.memcache.php
)
*
[
[yii\caching\ZendDataCache
]
]: 使用
and
[
memcached
](
http://php.net/manual/en/book.memcached.php
)
extensions. This option can be considered as
the fastest one when dealing with cache in a distributed applications (e.g. with several servers, load
balancers, etc.)
*
[
[yii\redis\Cache
]
]: implements a cache component based on
[
Redis
](
http://redis.io/
)
key-value store
(redis version 2.6.12 or higher is required).
*
[
[yii\caching\WinCache
]
]: uses PHP
[
WinCache
](
http://iis.net/downloads/microsoft/wincache-extension
)
(
[
see also
](
http://php.net/manual/en/book.wincache.php
)
) extension.
*
[
[yii\caching\XCache
]
]: uses PHP
[
XCache
](
http://xcache.lighttpd.net/
)
extension.
*
[
[yii\caching\ZendDataCache
]
]: uses
[
Zend Data Cache
](
http://files.zend.com/help/Zend-Server-6/zend-server.htm#data_cache_component.htm
)
[
Zend Data Cache
](
http://files.zend.com/help/Zend-Server-6/zend-server.htm#data_cache_component.htm
)
as the underlying caching medium.
作为底层缓存介质。
> Tip: You may use different cache storage in the same application. A common strategy is to use memory-based
> Tip: 你可以在同一个应用程序中使用不同的缓存存储器。一个常见的策略是使用基于内存的缓存存储器存储小而常用的数据(例如:统计数据),使用基于文件或数据库的缓存存储器存储大而不太常用的数据(例如:网页内容)。
cache storage to store data that is small but constantly used (e.g. statistical data), and use file-based
or database-based cache storage to store data that is big and less frequently used (e.g. page content).
## Cache APIs <a name="cache-apis"></a>
## Cache APIs <a name="cache-apis"></a>
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