add dashboard

dashboard/server/services/CacheService.ts

@@ -0,0 +1,63 @@
+
+import { createClient } from 'redis';
+
+const runtimeConfig = useRuntimeConfig();
+
+export const DATA_EXPIRE_TIME = 30;
+export const TIMELINE_EXPIRE_TIME = 60 * 5;
+export const COUNTS_EXPIRE_TIME = 10;
+
+export const COUNTS_OLD_SESSIONS_EXPIRE_TIME = 60 * 5;
+export const COUNTS_SESSIONS_EXPIRE_TIME = 60 * 3;
+
+export const EVENT_NAMES_EXPIRE_TIME = 60;
+
+
+export class Redis {
+
+    private static client = createClient({
+        url: runtimeConfig.REDIS_URL,
+        username: runtimeConfig.REDIS_USERNAME,
+        password: runtimeConfig.REDIS_PASSWORD,
+    });
+
+    static async init() {
+        await this.client.connect();
+    }
+
+    static async setString(key: string, value: string, exp: number) {
+        await this.client.set(key, value, { EX: exp });
+    }
+
+
+    static async set<T extends any>(key: string, value: T, exp: number) {
+        const stringValue = JSON.stringify(value);
+        this.setString(key, stringValue, exp);
+    }
+
+    static async getString(key: string) {
+        return await this.client.get(key);
+    }
+
+    static async get<T extends any>(key: string): Promise<undefined | T> {
+        const data = await this.getString(key);
+        if (!data) return;
+        return JSON.parse(data);
+    }
+
+    static async del(key: string) {
+        await this.client.del(key);
+    }
+
+    static async useCache<T extends any>(options: { key: string, exp: number }, action: (noStore: () => void) => Promise<T>): Promise<T> {
+        const cached = await this.get<T>(options.key);
+        if (cached) return cached;
+        let storeResult = true;
+        const noStore = () => storeResult = false;
+        const result = await action(noStore);
+        if (!storeResult) return result;
+        await this.set(options.key, result, options.exp);
+        return result;
+    }
+
+}