Adding support to persist variables in Redis

back/src/Services/RedisClient.ts

@@ -0,0 +1,23 @@
+import { ClientOpts, createClient, RedisClient } from "redis";
+import { REDIS_HOST, REDIS_PASSWORD, REDIS_PORT } from "../Enum/EnvironmentVariable";
+
+let redisClient: RedisClient | null = null;
+
+if (REDIS_HOST !== undefined) {
+    const config: ClientOpts = {
+        host: REDIS_HOST,
+        port: REDIS_PORT,
+    };
+
+    if (REDIS_PASSWORD) {
+        config.password = REDIS_PASSWORD;
+    }
+
+    redisClient = createClient(config);
+
+    redisClient.on("error", (err) => {
+        console.error("Error connecting to Redis:", err);
+    });
+}
+
+export { redisClient };