fix: wrap tier rewards endpoint in unstable_cache

server/routers/contentstack/reward/query.ts

@@ -1,10 +1,10 @@
 import { metrics } from "@opentelemetry/api"
+import { unstable_cache } from "next/cache"
 
 import { Lang } from "@/constants/languages"
 import * as api from "@/lib/api"
 import { GetRewards } from "@/lib/graphql/Query/Rewards.graphql"
 import { request } from "@/lib/graphql/request"
-import { Context } from "@/server/context"
 import { notFound } from "@/server/errors/trpc"
 import {
   contentStackBaseWithProtectedProcedure,
@@ -62,19 +62,19 @@ const getAllRewardFailCounter = meter.createCounter(
   "trpc.contentstack.reward.all-fail"
 )
 
+const ONE_HOUR = 60 * 60
+
 function getUniqueRewardIds(rewardIds: string[]) {
   const uniqueRewardIds = new Set(rewardIds)
   return Array.from(uniqueRewardIds)
 }
 
-async function getAllApiRewards(ctx: Context & { serviceToken: string }) {
+const getAllCachedApiRewards = unstable_cache(
+  async function (token) {
     const apiResponse = await api.get(api.endpoints.v1.tierRewards, {
-    cache: undefined, // override defaultOptions
       headers: {
-      Authorization: `Bearer ${ctx.serviceToken}`,
+        Authorization: `Bearer ${token}`,
       },
-    // One hour. Since the service token is refreshed every hour, this is the longest cache we can have.
-    next: { revalidate: 60 * 60 },
     })
 
     if (!apiResponse.ok) {
@@ -118,13 +118,15 @@ async function getAllApiRewards(ctx: Context & { serviceToken: string }) {
     }
 
     return validatedApiTierRewards.data
-}
+  },
+  ["getAllApiRewards"],
+  { revalidate: ONE_HOUR }
+)
 
 async function getCmsRewards(locale: Lang, rewardIds: string[]) {
   const tags = rewardIds.map((id) =>
     generateLoyaltyConfigTag(locale, "reward", id)
   )
-
   const cmsRewardsResponse = await request<CmsRewardsResponse>(
     GetRewards,
     {
@@ -266,7 +268,9 @@ export const rewardQueryRouter = router({
       getByLevelRewardCounter.add(1)
       const { level_id } = input
 
-      const allUpcomingApiRewards = await getAllApiRewards(ctx)
+      const allUpcomingApiRewards = await getAllCachedApiRewards(
+        ctx.serviceToken
+      )
 
       if (!allUpcomingApiRewards || !allUpcomingApiRewards[level_id]) {
         getByLevelRewardFailCounter.add(1)
@@ -314,7 +318,7 @@ export const rewardQueryRouter = router({
     .input(rewardsAllInput)
     .query(async function ({ input, ctx }) {
       getAllRewardCounter.add(1)
-      const allApiRewards = await getAllApiRewards(ctx)
+      const allApiRewards = await getAllCachedApiRewards(ctx.serviceToken)
 
       if (!allApiRewards) {
         return []