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new 3ca8f38d15 Optimize the cache result document (#2245)
3ca8f38d15 is described below
commit 3ca8f38d15f14fa86dcefbd5e3ee626f05c6f8e9
Author: huazhongming <[email protected]>
AuthorDate: Wed Feb 15 15:48:39 2023 +0800
Optimize the cache result document (#2245)
---
.../performance/result-cache.md | 96 ++++++++++++++++++++--
1 file changed, 90 insertions(+), 6 deletions(-)
diff --git
a/content/zh-cn/docs3-v2/java-sdk/advanced-features-and-usage/performance/result-cache.md
b/content/zh-cn/docs3-v2/java-sdk/advanced-features-and-usage/performance/result-cache.md
index 2b12d86420..9f7d1c2edd 100644
---
a/content/zh-cn/docs3-v2/java-sdk/advanced-features-and-usage/performance/result-cache.md
+++
b/content/zh-cn/docs3-v2/java-sdk/advanced-features-and-usage/performance/result-cache.md
@@ -4,12 +4,20 @@ title: "调用结果缓存"
linkTitle: "调用结果缓存"
weight: 7
description: "通过缓存结果加速访问速度"
+
---
+
## 功能说明
+Dubbo支持了服务端结果缓存和客户端结果缓存。
+
#### 缓存类型
+目前Dubbo3.0版本及高于其的版本都支持以下几种内置的缓存策略：
+
* `lru` 基于最近最少使用原则删除多余缓存，保持最热的数据被缓存。
+* `lfu`基于淘汰使用频次最低的原则来实现缓存策略。
+* `expiring`基于过期时间原则来实现缓存策略。
* `threadlocal` 当前线程缓存，比如一个页面渲染，用到很多 portal，每个 portal
都要去查用户信息，通过线程缓存，可以减少这种多余访问。
* `jcache` 与 [JSR107](http://jcp.org/en/jsr/detail?id=107%27) 集成，可以桥接各种缓存实现。
@@ -19,18 +27,94 @@ description: "通过缓存结果加速访问速度"
## 使用场景
-结果缓存，用于加速热门数据的访问速度，Dubbo 提供声明式缓存，以减少用户加缓存的工作量。
+结果缓存，用于加速热门数据的访问速度，Dubbo 提供声明式缓存，以减少用户加缓存的工作量。
+
+## 客户端缓存使用方式
-## 使用方式
+Dubbo中对RPC调用结果缓存支持接口粒度和方法粒度的配置控制。
+
+**接口粒度**
+
+xml配置方式：
```xml
-<dubbo:reference interface="com.foo.BarService" cache="lru" />
+<dubbo:reference interface="com.foo.DemoService" cache="lru" />
+```
+
+注解配置方式：
+
+```java
+@DubboReference(cache = "lru")
+private DemoService demoService;
```
-或：
+**方法粒度**
```xml
-<dubbo:reference interface="com.foo.BarService">
- <dubbo:method name="findBar" cache="lru" />
+<dubbo:reference interface="com.foo.DemoService">
+ <dubbo:method name="sayHello" cache="lru" />
</dubbo:reference>
```
+
+注解配置方式：
+
+```java
+@DubboReference(methods = {@Method(name="sayHello",cache = "lru")})
+private DemoService demoService;
+```
+
+## 服务端缓存使用方式
+
+**接口粒度**
+
+xml配置方式：
+
+```xml
+<bean id="demoService" class="org.apache.dubbo.demo.provider.DemoServiceImpl"/>
+<dubbo:service interface="com.foo.DemoService" ref="demoService" cache="lru" />
+```
+
+注解配置方式：
+
+```java
+@DubboService(cache = "lru")
+public class DemoServiceImpl implements DemoService {
+
+ private static final Logger logger =
LoggerFactory.getLogger(DemoServiceImpl.class);
+ @Override
+ public String sayHello(String name) {
+ logger.info("Hello " + name + ", request from consumer: " +
RpcContext.getContext().getRemoteAddress());
+ return "Hello " + name;
+
+ }
+
+}
+```
+
+**方法粒度**
+
+```xml
+<bean id="demoService" class="org.apache.dubbo.demo.provider.DemoServiceImpl"/>
+<dubbo:service interface="com.foo.DemoService" ref="demoService" cache="lru" />
+ <dubbo:method name="sayHello" cache="lru" />
+</dubbo:service>
+```
+
+注解配置方式：
+
+```java
+@DubboService(methods = {@Method(name="sayHello",cache = "lru")})
+public class DemoServiceImpl implements DemoService {
+
+ private static final Logger logger =
LoggerFactory.getLogger(DemoServiceImpl.class);
+ @Override
+ public String sayHello(String name) {
+ logger.info("Hello " + name + ", request from consumer: " +
RpcContext.getContext().getRemoteAddress());
+ return "Hello " + name;
+
+ }
+
+}
+```
+
+##
\ No newline at end of file
