feat(server): added keystore and made server cfg fetch from keystore to avoid db calls

backend/src/keystore/keystore.ts

@@ -0,0 +1,13 @@
+import { Redis } from "ioredis";
+
+export type TKeyStoreFactory = ReturnType<typeof keyStoreFactory>;
+
+export const keyStoreFactory = (redisUrl: string) => {
+  const redis = new Redis(redisUrl);
+
+  const setItem = async (key: string, value: string | number | Buffer) => redis.set(key, value);
+
+  const getItem = async (key: string) => redis.get(key);
+
+  return { setItem, getItem };
+};