fix(redis): skip missing-REDIS_URL warning during production build

src/lib/redis.ts

@@ -1,3 +1,4 @@
+import { PHASE_PRODUCTION_BUILD } from "next/constants";
 import "server-only";
 
 import Redis from "ioredis";
@@ -12,7 +13,11 @@ const globalForRedis = globalThis as unknown as {
 function createRedis(): Redis | null {
 	const url = env.REDIS_URL;
 	if (!url) {
-		if (env.NODE_ENV === "production" && !globalForRedis.redisMissingWarned) {
+		if (
+			env.NODE_ENV === "production" &&
+			process.env.NEXT_PHASE !== PHASE_PRODUCTION_BUILD &&
+			!globalForRedis.redisMissingWarned
+		) {
 			globalForRedis.redisMissingWarned = true;
 			logger.error(
 				"[redis] REDIS_URL is unset in production. Rate limits, site-settings cache, and JWT session invalidation fall back to in-process memory and will not work correctly across multiple instances or restarts. Set REDIS_URL in .env.",