From 4036abdd114641324b9afe835b03c2ce62ea022e Mon Sep 17 00:00:00 2001
From: Dong-Ha Kim <dongha.kim210@gmail.com>
Date: Fri, 6 Sep 2024 21:28:57 +0800
Subject: [PATCH] fix: skip redis cache ops if env vars not defined (#1195)

---
 api/_cache.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/api/_cache.ts b/api/_cache.ts
index cb92e0e1c..b170042e3 100644
--- a/api/_cache.ts
+++ b/api/_cache.ts
@@ -1,8 +1,21 @@
 import { kv } from "@vercel/kv";
 import { interfaces } from "@across-protocol/sdk";
 
+const {
+  KV_REST_API_READ_ONLY_TOKEN,
+  KV_REST_API_TOKEN,
+  KV_REST_API_URL,
+  KV_URL,
+} = process.env;
+const isRedisCacheEnabled =
+  KV_REST_API_URL && KV_REST_API_TOKEN && KV_REST_API_READ_ONLY_TOKEN && KV_URL;
+
 export class RedisCache implements interfaces.CachingMechanismInterface {
   async get<T>(key: string): Promise<T | null> {
+    if (!isRedisCacheEnabled) {
+      return null;
+    }
+
     const value = await kv.get(key);
     if (value === null || value === undefined) {
       return null;
@@ -11,6 +24,10 @@ export class RedisCache implements interfaces.CachingMechanismInterface {
   }
 
   async set<T>(key: string, value: T, ttl = 10): Promise<string | undefined> {
+    if (!isRedisCacheEnabled) {
+      return;
+    }
+
     try {
       if (typeof value === "string") {
         try {