0.3

Author: zmh-program

cache.js

@@ -0,0 +1,50 @@
+// 类似于 Service Worker 缓存机制
+
+const axios = require("axios");
+const token = process.env.CODE_STATISTIC || "";
+
+class ApiCache {
+  constructor() {
+      this.caches = {};
+  }
+  setCache(key, value, expiration) {
+    this.caches[key] = {
+      value: value,
+      expiration: expiration + (new Date().getTime() / 1000),
+    };
+    return value;
+  }
+  getCache(key) {
+    if (! key in this.caches) {
+      return undefined;
+    }
+    const memory = this.caches[key];
+    if (memory.expiration > new Date().getTime() / 1000) {
+      return undefined;
+    }
+    return memory.value;
+  }
+  
+  async syncAxios(url) {
+    return (await axios.get(url, {
+      headers: {
+        Accept: "application/json",
+        Authorization: `Bearer ${token}`,
+      }
+    })).data;
+  }
+
+  async requestWithCache(url, expiration=3600) {
+    const cache = this.getCache(url);
+    if ( ! cache === undefined ) {
+      const resp = await this.syncAxios(url);
+      return this.setCache(url, resp, expiration);
+    }
+    return cache;
+  }
+}
+
+module.exports = [
+  token,
+  ApiCache
+]

index.js

@@ -1,16 +1,7 @@
 const express = require('express');
 const axios = require('axios');
-const token = process.env.CODE_STATISTIC || "";
 const app = express();
 
-async function syncAxios(url) {
-    return (await axios.get(url, {
-        headers: {
-            Accept: "application/json",
-            Authorization: `Bearer ${token}`,
-        }
-    })).data;
-}
 
 async function getLanguage(user, repo) {
     return await syncAxios(`https://api.github.com/repos/${user}/${repo}/languages`);