chore: remove Next.js Redis cache handler (#6725)

apps/web/cache-handler.js

@@ -1,99 +0,0 @@
-// This cache handler follows the @fortedigital/nextjs-cache-handler example
-// Read more at: https://github.com/fortedigital/nextjs-cache-handler
-
-// @neshca/cache-handler dependencies
-const { CacheHandler } = require("@neshca/cache-handler");
-const createLruHandler = require("@neshca/cache-handler/local-lru").default;
-
-// Next/Redis dependencies
-const { createClient } = require("redis");
-const { PHASE_PRODUCTION_BUILD } = require("next/constants");
-
-// @fortedigital/nextjs-cache-handler dependencies
-const createRedisHandler = require("@fortedigital/nextjs-cache-handler/redis-strings").default;
-const createBufferStringHandler =
-  require("@fortedigital/nextjs-cache-handler/buffer-string-decorator").default;
-const { Next15CacheHandler } = require("@fortedigital/nextjs-cache-handler/next-15-cache-handler");
-
-// Usual onCreation from @neshca/cache-handler
-CacheHandler.onCreation(() => {
-  // Important - It's recommended to use global scope to ensure only one Redis connection is made
-  // This ensures only one instance get created
-  if (global.cacheHandlerConfig) {
-    return global.cacheHandlerConfig;
-  }
-
-  // Important - It's recommended to use global scope to ensure only one Redis connection is made
-  // This ensures new instances are not created in a race condition
-  if (global.cacheHandlerConfigPromise) {
-    return global.cacheHandlerConfigPromise;
-  }
-
-  // If REDIS_URL is not set, we will use LRU cache only
-  if (!process.env.REDIS_URL) {
-    const lruCache = createLruHandler();
-    return { handlers: [lruCache] };
-  }
-
-  // Main promise initializing the handler
-  global.cacheHandlerConfigPromise = (async () => {
-    /** @type {import("redis").RedisClientType | null} */
-    let redisClient = null;
-    // eslint-disable-next-line turbo/no-undeclared-env-vars -- Next.js will inject this variable
-    if (PHASE_PRODUCTION_BUILD !== process.env.NEXT_PHASE) {
-      const settings = {
-        url: process.env.REDIS_URL, // Make sure you configure this variable
-        pingInterval: 10000,
-      };
-
-      try {
-        redisClient = createClient(settings);
-        redisClient.on("error", (e) => {
-          console.error("Redis error", e);
-          global.cacheHandlerConfig = null;
-          global.cacheHandlerConfigPromise = null;
-        });
-      } catch (error) {
-        console.error("Failed to create Redis client:", error);
-      }
-    }
-
-    if (redisClient) {
-      try {
-        console.info("Connecting Redis client...");
-        await redisClient.connect();
-        console.info("Redis client connected.");
-      } catch (error) {
-        console.error("Failed to connect Redis client:", error);
-        await redisClient
-          .disconnect()
-          .catch(() => console.error("Failed to quit the Redis client after failing to connect."));
-      }
-    }
-    const lruCache = createLruHandler();
-
-    if (!redisClient?.isReady) {
-      console.error("Failed to initialize caching layer.");
-      global.cacheHandlerConfigPromise = null;
-      global.cacheHandlerConfig = { handlers: [lruCache] };
-      return global.cacheHandlerConfig;
-    }
-
-    const redisCacheHandler = createRedisHandler({
-      client: redisClient,
-      keyPrefix: "nextjs:",
-    });
-
-    global.cacheHandlerConfigPromise = null;
-
-    global.cacheHandlerConfig = {
-      handlers: [createBufferStringHandler(redisCacheHandler)],
-    };
-
-    return global.cacheHandlerConfig;
-  })();
-
-  return global.cacheHandlerConfigPromise;
-});
-
-module.exports = new Next15CacheHandler();

apps/web/next.config.mjs

@@ -16,8 +16,6 @@ const getHostname = (url) => {
 
 const nextConfig = {
   assetPrefix: process.env.ASSET_PREFIX_URL || undefined,
-  cacheHandler: require.resolve("./cache-handler.js"),
-  cacheMaxMemorySize: 0, // disable default in-memory caching
   output: "standalone",
   poweredByHeader: false,
   productionBrowserSourceMaps: true,

apps/web/package.json

@@ -34,7 +34,6 @@
     "@formbricks/surveys": "workspace:*",
     "@formbricks/storage": "workspace:*",
     "@formbricks/types": "workspace:*",
-    "@fortedigital/nextjs-cache-handler": "1.2.0",
     "@hookform/resolvers": "5.0.1",
     "@intercom/messenger-js-sdk": "0.0.14",
     "@json2csv/node": "7.0.6",
@@ -98,7 +97,6 @@
     "jsonwebtoken": "9.0.2",
     "lexical": "0.36.2",
     "lodash": "4.17.21",
-    "lru-cache": "11.1.0",
     "lucide-react": "0.507.0",
     "markdown-it": "14.1.0",
     "mime-types": "3.0.1",
@@ -138,7 +136,6 @@
   "devDependencies": {
     "@formbricks/config-typescript": "workspace:*",
     "@formbricks/eslint-config": "workspace:*",
-    "@neshca/cache-handler": "1.9.0",
     "@testing-library/jest-dom": "6.6.3",
     "@testing-library/react": "16.3.0",
     "@tolgee/cli": "2.10.2",

pnpm-lock.yaml

@@ -151,9 +151,6 @@ importers:
       '@formbricks/types':
         specifier: workspace:*
         version: link:../../packages/types
-      '@fortedigital/nextjs-cache-handler':
-        specifier: 1.2.0
-        version: 1.2.0(next@15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0))(redis@4.7.0)
       '@hookform/resolvers':
         specifier: 5.0.1
         version: 5.0.1(react-hook-form@7.56.2(react@19.1.0))
@@ -343,9 +340,6 @@ importers:
       lodash:
         specifier: 4.17.21
         version: 4.17.21
-      lru-cache:
-        specifier: 11.1.0
-        version: 11.1.0
       lucide-react:
         specifier: 0.507.0
         version: 0.507.0(react@19.1.0)
@@ -458,9 +452,6 @@ importers:
       '@formbricks/eslint-config':
         specifier: workspace:*
         version: link:../../packages/config-eslint
-      '@neshca/cache-handler':
-        specifier: 1.9.0
-        version: 1.9.0(next@15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0))(redis@4.7.0)
       '@testing-library/jest-dom':
         specifier: 6.6.3
         version: 6.6.3
@@ -1989,12 +1980,6 @@ packages:
   '@formkit/auto-animate@0.8.2':
     resolution: {integrity: sha512-SwPWfeRa5veb1hOIBMdzI+73te5puUBHmqqaF1Bu7FjvxlYSz/kJcZKSa9Cg60zL0uRNeJL2SbRxV6Jp6Q1nFQ==}
 
-  '@fortedigital/nextjs-cache-handler@1.2.0':
-    resolution: {integrity: sha512-dHu7+D6yVHI5ii1/DgNSZM9wVPk8uKAB0zrRoNNbZq6hggpRRwAExV4J6bSGOd26RN6ZnfYaGLBmdb0gLpeBQg==}
-    peerDependencies:
-      next: '>=13.5.1'
-      redis: '>=4.6'
-
   '@gar/promisify@1.1.3':
     resolution: {integrity: sha512-k2Ty1JcVojjJFwrg/ThKi2ujJ7XNLYaFGNB/bWT9wGR+oSMJHMa5w+CUq6p/pVrKeNNgA7pCqEcjSnHVoqJQFw==}
 
@@ -2446,12 +2431,6 @@ packages:
   '@neoconfetti/react@1.0.0':
     resolution: {integrity: sha512-klcSooChXXOzIm+SE5IISIAn3bYzYfPjbX7D7HoqZL84oAfgREeSg5vSIaSFH+DaGzzvImTyWe1OyrJ67vik4A==}
 
-  '@neshca/cache-handler@1.9.0':
-    resolution: {integrity: sha512-dh0x4pdjDKvPRfZF5DZb8TtOUkbBfeTodOUdQsHDuv0oiuqQ3p7GLx38f6bPn8Sa4he8HsWo+rM4S20ZRqr7pA==}
-    peerDependencies:
-      next: '>= 13.5.1 < 15'
-      redis: '>= 4.6'
-
   '@next/env@15.5.2':
     resolution: {integrity: sha512-Qe06ew4zt12LeO6N7j8/nULSOe3fMXE4dM6xgpBQNvdzyK1sv5y4oAP3bq4LamrvGCZtmRYnW8URFCeX5nFgGg==}
 
@@ -12475,16 +12454,6 @@ snapshots:
 
   '@formkit/auto-animate@0.8.2': {}
 
-  '@fortedigital/nextjs-cache-handler@1.2.0(next@15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0))(redis@4.7.0)':
-    dependencies:
-      '@neshca/cache-handler': 1.9.0(next@15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0))(redis@4.7.0)
-      cluster-key-slot: 1.1.2
-      lru-cache: 11.1.0
-      next: 15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0)
-      redis: 4.7.0
-    optionalDependencies:
-      '@rollup/rollup-linux-x64-gnu': 4.46.1
-
   '@gar/promisify@1.1.3':
     optional: true
 
@@ -13014,13 +12983,6 @@ snapshots:
 
   '@neoconfetti/react@1.0.0': {}
 
-  '@neshca/cache-handler@1.9.0(next@15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0))(redis@4.7.0)':
-    dependencies:
-      cluster-key-slot: 1.1.2
-      lru-cache: 10.4.3
-      next: 15.5.2(@opentelemetry/api@1.9.0)(@playwright/test@1.52.0)(react-dom@19.1.0(react@19.1.0))(react@19.1.0)
-      redis: 4.7.0
-
   '@next/env@15.5.2': {}
 
   '@next/eslint-plugin-next@15.3.2':