Refactored redis usage. Added lib/cache.

lib/cache.js

@@ -0,0 +1,84 @@
+import { getWebsite, getUser, getSession } from '../queries';
+import redis, { DELETED } from 'lib/redis';
+
+async function fetchObject(key, query) {
+  const obj = await redis.get(key);
+
+  if (!obj) {
+    return query().then(async data => {
+      if (data) {
+        await redis.set(key, data);
+      }
+
+      return data;
+    });
+  }
+
+  return obj;
+}
+
+async function storeObject(key, data) {
+  return redis.set(key, data);
+}
+
+async function deleteObject(key) {
+  return redis.set(key, DELETED);
+}
+
+async function fetchWebsite(id) {
+  return fetchObject(`website:${id}`, () => getWebsite({ id }));
+}
+
+async function storeWebsite(data) {
+  const { id } = data;
+  const key = `website:${id}`;
+
+  return storeObject(key, data);
+}
+
+async function deleteWebsite(id) {
+  return deleteObject(`website:${id}`);
+}
+
+async function fetchUser(id) {
+  return fetchObject(`user:${id}`, () => getUser({ id }));
+}
+
+async function storeUser(data) {
+  const { id } = data;
+  const key = `user:${id}`;
+
+  return storeObject(key, data);
+}
+
+async function deleteUser(id) {
+  return deleteObject(`user:${id}`);
+}
+
+async function fetchSession(id) {
+  return fetchObject(`session:${id}`, () => getSession({ id }));
+}
+
+async function storeSession(data) {
+  const { id } = data;
+  const key = `session:${id}`;
+
+  return storeObject(key, data);
+}
+
+async function deleteSession(id) {
+  return deleteObject(`session:${id}`);
+}
+
+export default {
+  fetchWebsite,
+  storeWebsite,
+  deleteWebsite,
+  fetchUser,
+  storeUser,
+  deleteUser,
+  fetchSession,
+  storeSession,
+  deleteSession,
+  enabled: redis.enabled,
+};