增加proto相关注释

pkg/rpc/jsons/http_cache_config.md

@@ -0,0 +1,92 @@
+# HTTP缓存配置
+## 定义
+~~~json
+{
+  "isPrior": "是否覆盖上级配置",
+  "isOn": "是否启用配置",
+  "addStatusHeader": "是否增加命中状态Header（X-Cache）",
+  "addAgeHeader": "是否增加Age Header",
+  "enableCacheControlMaxAge": "是否支持Cache-Control: max-age=...",
+  "disablePolicyRefs": "是否停用策略中定义的条件",
+  "purgeIsOn": "是否允许使用Purge方法清理",
+  "purgeKey": "Purge时使用的X-Edge-Purge-Key",
+  "stale": "陈旧缓存使用策略",
+  "cacheRefs": ["缓存条件1", "缓存条件2", ...]
+}
+~~~
+其中：
+* `缓存条件` - 参考 {json:http_cache_ref}
+
+## 示例
+### 无缓存条件
+~~~json
+{
+  "isPrior": true,
+  "isOn": true,
+  "addStatusHeader": true,
+  "addAgeHeader": true,
+  "enableCacheControlMaxAge": true,
+  "disablePolicyRefs": false,
+  "purgeIsOn": false,
+  "purgeKey": "",
+  "stale": null,
+  "cacheRefs": []
+}
+~~~
+
+### 加入缓存条件
+~~~json
+{
+  "isPrior": true,
+  "isOn": true,
+  "addStatusHeader": true,
+  "addAgeHeader": true,
+  "enableCacheControlMaxAge": true,
+  "disablePolicyRefs": false,
+  "purgeIsOn": false,
+  "purgeKey": "",
+  "stale": null,
+  "cacheRefs": [
+    {
+	  "id": 0,
+	  "isOn": true,
+	  "key": "${scheme}://${host}${requestPath}${isArgs}${args}",
+	  "life": {"count": 2, "unit": "hour"},
+	  "status": [200],
+      "maxSize": {"count": 32, "unit": "mb"},
+      "minSize": {"count": 0, "unit": "kb"},
+      "skipCacheControlValues": ["private", "no-cache", "no-store"],
+      "skipSetCookie": true,
+      "enableRequestCachePragma": false,
+      "conds": {
+        "isOn": true,
+        "connector": "or",
+        "groups": [
+          {
+            "isOn": true,
+            "connector": "and",
+            "conds": [
+              {
+                "type": "url-extension",
+                "isRequest": true,
+                "param": "${requestPathExtension}",
+                "operator": "in",
+                "value": "[\".css\",\".png\",\".js\",\".woff2\"]",
+                "isReverse": false,
+                "isCaseInsensitive": false,
+                "typeName": "URL扩展名"
+              }
+            ],
+            "isReverse": false,
+            "description": ""
+          }
+        ]
+      },
+      "allowChunkedEncoding": true,
+      "allowPartialContent": false,
+      "isReverse": false,
+      "methods": []
+	}
+  ]
+}
+~~~