Add retry connection to redis. Clean up up redis/session logic

lib/redis.js

@@ -13,7 +13,12 @@ function getClient() {
     return null;
   }
 
-  const redis = new Redis(process.env.REDIS_URL);
+  const redis = new Redis(process.env.REDIS_URL, {
+    retryStrategy(times) {
+      log(`Redis reconnecting attempt: ${times}`);
+      return 5000;
+    },
+  });
 
   if (process.env.NODE_ENV !== 'production') {
     global[REDIS] = redis;