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Fix wrong if statement in Redis.md
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docs/database/Redis/Redis.md

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@@ -304,7 +304,7 @@ public Object getObjectInclNullById(Integer id) {
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// 从缓存中获取数据
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Object cacheValue = cache.get(id);
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// 缓存为空
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if (cacheValue != null) {
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if (cacheValue == null) {
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// 从数据库中获取
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Object storageValue = storage.get(key);
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// 缓存空对象
@@ -367,4 +367,4 @@ public Object getObjectInclNullById(Integer id) {
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![我的公众号](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/167598cd2e17b8ec.png)
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![我的公众号](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/167598cd2e17b8ec.png)

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