图片压缩
guide
@ -231,9 +231,9 @@ JVM 这部分内容主要参考 [JVM 虚拟机规范-Java8 ](https://docs.oracle
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#### 敏感词过滤
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系统需要对用户输入的文本进行敏感词过滤如色情、政治、暴力相关的词汇。
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https://github.com/toolgood/ToolGood.Words
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相关阅读：[《Java定时任务大揭秘》](./docs/system-design/security/sentive-words-filter.md)
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### 定时任务
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Before Width: | Height: | Size: 3.8 KiB After Width: | Height: | Size: 3.2 KiB |
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Before Width: | Height: | Size: 4.9 KiB After Width: | Height: | Size: 4.2 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 9.4 KiB |
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Before Width: | Height: | Size: 2.9 KiB After Width: | Height: | Size: 2.1 KiB |
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Before Width: | Height: | Size: 6.8 KiB After Width: | Height: | Size: 4.6 KiB |
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Before Width: | Height: | Size: 2.2 KiB After Width: | Height: | Size: 1.8 KiB |
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Before Width: | Height: | Size: 2.1 KiB After Width: | Height: | Size: 1.5 KiB |
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Before Width: | Height: | Size: 2.6 KiB After Width: | Height: | Size: 1.8 KiB |
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Before Width: | Height: | Size: 6.1 KiB After Width: | Height: | Size: 5.5 KiB |
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Before Width: | Height: | Size: 64 KiB After Width: | Height: | Size: 52 KiB |
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Before Width: | Height: | Size: 7.9 KiB After Width: | Height: | Size: 6.4 KiB |
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Before Width: | Height: | Size: 6.0 KiB After Width: | Height: | Size: 4.5 KiB |
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Before Width: | Height: | Size: 14 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 8.1 KiB After Width: | Height: | Size: 7.2 KiB |
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Before Width: | Height: | Size: 12 KiB After Width: | Height: | Size: 10 KiB |
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Before Width: | Height: | Size: 14 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 14 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 13 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 9.7 KiB After Width: | Height: | Size: 8.5 KiB |
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Before Width: | Height: | Size: 9.7 KiB After Width: | Height: | Size: 8.3 KiB |
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Before Width: | Height: | Size: 9.8 KiB After Width: | Height: | Size: 8.5 KiB |
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Before Width: | Height: | Size: 9.8 KiB After Width: | Height: | Size: 8.5 KiB |
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Before Width: | Height: | Size: 9.7 KiB After Width: | Height: | Size: 8.5 KiB |
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Before Width: | Height: | Size: 9.8 KiB After Width: | Height: | Size: 8.7 KiB |
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Before Width: | Height: | Size: 9.8 KiB After Width: | Height: | Size: 8.7 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 6.6 KiB After Width: | Height: | Size: 6.0 KiB |
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Before Width: | Height: | Size: 6.1 KiB After Width: | Height: | Size: 5.5 KiB |
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Before Width: | Height: | Size: 5.6 KiB After Width: | Height: | Size: 5.0 KiB |
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Before Width: | Height: | Size: 5.2 KiB After Width: | Height: | Size: 4.4 KiB |
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Before Width: | Height: | Size: 4.2 KiB After Width: | Height: | Size: 3.4 KiB |
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Before Width: | Height: | Size: 3.1 KiB After Width: | Height: | Size: 2.5 KiB |
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Before Width: | Height: | Size: 12 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 7.2 KiB After Width: | Height: | Size: 6.3 KiB |
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Before Width: | Height: | Size: 7.2 KiB After Width: | Height: | Size: 6.5 KiB |
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Before Width: | Height: | Size: 7.2 KiB After Width: | Height: | Size: 6.4 KiB |
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Before Width: | Height: | Size: 7.2 KiB After Width: | Height: | Size: 6.4 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 8.6 KiB |
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Before Width: | Height: | Size: 3.5 KiB After Width: | Height: | Size: 2.3 KiB |
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Before Width: | Height: | Size: 10 KiB After Width: | Height: | Size: 8.6 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 8.7 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 8.7 KiB |
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Before Width: | Height: | Size: 4.8 KiB After Width: | Height: | Size: 3.4 KiB |
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Before Width: | Height: | Size: 4.0 KiB After Width: | Height: | Size: 3.0 KiB |
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Before Width: | Height: | Size: 6.0 KiB After Width: | Height: | Size: 4.4 KiB |
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Before Width: | Height: | Size: 5.9 KiB After Width: | Height: | Size: 4.6 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 14 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 10 KiB After Width: | Height: | Size: 8.2 KiB |
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Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 12 KiB After Width: | Height: | Size: 9.6 KiB |
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Before Width: | Height: | Size: 7.1 KiB After Width: | Height: | Size: 5.9 KiB |
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Before Width: | Height: | Size: 4.0 KiB After Width: | Height: | Size: 3.5 KiB |
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Before Width: | Height: | Size: 7.3 KiB After Width: | Height: | Size: 6.2 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 10 KiB |
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Before Width: | Height: | Size: 3.0 KiB After Width: | Height: | Size: 2.4 KiB |
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Before Width: | Height: | Size: 4.9 KiB After Width: | Height: | Size: 4.1 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 12 KiB |
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Before Width: | Height: | Size: 220 KiB |
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Before Width: | Height: | Size: 18 KiB After Width: | Height: | Size: 14 KiB |
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Before Width: | Height: | Size: 22 KiB After Width: | Height: | Size: 16 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 11 KiB |
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Before Width: | Height: | Size: 19 KiB After Width: | Height: | Size: 15 KiB |
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Before Width: | Height: | Size: 51 KiB After Width: | Height: | Size: 51 KiB |
@ -65,7 +65,7 @@ tag:
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上面我们对计算机网络的五层体系结构有了初步的了解，下面附送一张七层体系结构图总结一下（图片来源于网络）。
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## 二 TCP 三次握手和四次挥手(面试常客)
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Before Width: | Height: | Size: 61 KiB After Width: | Height: | Size: 51 KiB |
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Before Width: | Height: | Size: 3.2 KiB After Width: | Height: | Size: 2.8 KiB |
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Before Width: | Height: | Size: 21 KiB After Width: | Height: | Size: 17 KiB |
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Before Width: | Height: | Size: 11 KiB After Width: | Height: | Size: 9.5 KiB |
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Before Width: | Height: | Size: 46 KiB After Width: | Height: | Size: 38 KiB |
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Before Width: | Height: | Size: 63 KiB After Width: | Height: | Size: 45 KiB |
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Before Width: | Height: | Size: 2.3 KiB After Width: | Height: | Size: 1.9 KiB |
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Before Width: | Height: | Size: 24 KiB After Width: | Height: | Size: 22 KiB |
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Before Width: | Height: | Size: 28 KiB After Width: | Height: | Size: 22 KiB |
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Before Width: | Height: | Size: 9.5 KiB After Width: | Height: | Size: 6.5 KiB |
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Before Width: | Height: | Size: 105 KiB After Width: | Height: | Size: 93 KiB |
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Before Width: | Height: | Size: 54 KiB After Width: | Height: | Size: 43 KiB |
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Before Width: | Height: | Size: 135 KiB After Width: | Height: | Size: 124 KiB |
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Before Width: | Height: | Size: 28 KiB After Width: | Height: | Size: 23 KiB |
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Before Width: | Height: | Size: 128 KiB After Width: | Height: | Size: 114 KiB |
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Before Width: | Height: | Size: 151 KiB After Width: | Height: | Size: 129 KiB |
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Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 13 KiB |
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Before Width: | Height: | Size: 40 KiB After Width: | Height: | Size: 28 KiB |