add redis rate limiter

package-lock.json

@@ -74,6 +74,7 @@
                 "oslo": "1.2.1",
                 "pg": "^8.16.0",
                 "qrcode.react": "4.2.0",
+                "rate-limit-redis": "^4.2.1",
                 "react": "19.1.0",
                 "react-dom": "19.1.0",
                 "react-easy-sort": "^1.6.0",
@@ -11506,6 +11507,18 @@
                 "node": ">= 0.6"
             }
         },
+        "node_modules/rate-limit-redis": {
+            "version": "4.2.1",
+            "resolved": "https://registry.npmjs.org/rate-limit-redis/-/rate-limit-redis-4.2.1.tgz",
+            "integrity": "sha512-JsUsVmRVI6G/XrlYtfGV1NMCbGS/CVYayHkxD5Ism5FaL8qpFHCXbFkUeIi5WJ/onJOKWCgtB/xtCLa6qSXb4g==",
+            "license": "MIT",
+            "engines": {
+                "node": ">= 16"
+            },
+            "peerDependencies": {
+                "express-rate-limit": ">= 6"
+            }
+        },
         "node_modules/raw-body": {
             "version": "2.5.2",
             "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.2.tgz",

package.json

@@ -92,6 +92,7 @@
         "oslo": "1.2.1",
         "pg": "^8.16.0",
         "qrcode.react": "4.2.0",
+        "rate-limit-redis": "^4.2.1",
         "react": "19.1.0",
         "react-dom": "19.1.0",
         "react-easy-sort": "^1.6.0",
@@ -107,9 +108,9 @@
         "winston": "3.17.0",
         "winston-daily-rotate-file": "5.0.0",
         "ws": "8.18.2",
+        "yargs": "18.0.0",
         "zod": "3.25.56",
-        "zod-validation-error": "3.4.1",
-        "yargs": "18.0.0"
+        "zod-validation-error": "3.4.1"
     },
     "devDependencies": {
         "@dotenvx/dotenvx": "1.44.1",

server/db/redis.ts

@@ -4,7 +4,7 @@ import config from "@server/lib/config";
 
 class RedisManager {
     private static instance: RedisManager;
-    private client: Redis | null = null;
+    public client: Redis | null = null;
     private subscriber: Redis | null = null;
     private publisher: Redis | null = null;
     private isEnabled: boolean = false;

server/middlewares/rateLimit.ts

@@ -3,20 +3,27 @@ import createHttpError from "http-errors";
 import { NextFunction, Request, Response } from "express";
 import logger from "@server/logger";
 import HttpCode from "@server/types/HttpCode";
+import config from "@server/lib/config";
+import { RedisStore } from "rate-limit-redis";
+import redisManager from "@server/db/redis";
+import { Command as RedisCommand } from "ioredis";
 
 export function rateLimitMiddleware({
     windowMin,
     max,
     type,
-    skipCondition,
+    skipCondition
 }: {
     windowMin: number;
     max: number;
     type: "IP_ONLY" | "IP_AND_PATH";
     skipCondition?: (req: Request, res: Response) => boolean;
 }) {
+    const enableRedis = config.getRawConfig().flags?.enable_redis;
+
+    let opts;
     if (type === "IP_AND_PATH") {
-        return rateLimit({
+        opts = {
             windowMs: windowMin * 60 * 1000,
             max,
             skip: skipCondition,
@@ -26,24 +33,37 @@ export function rateLimitMiddleware({
             handler: (req: Request, res: Response, next: NextFunction) => {
                 const message = `Rate limit exceeded. You can make ${max} requests every ${windowMin} minute(s).`;
                 logger.warn(
-                    `Rate limit exceeded for IP ${req.ip} on path ${req.path}`,
+                    `Rate limit exceeded for IP ${req.ip} on path ${req.path}`
                 );
                 return next(
-                    createHttpError(HttpCode.TOO_MANY_REQUESTS, message),
+                    createHttpError(HttpCode.TOO_MANY_REQUESTS, message)
                 );
-            },
-        });
             }
-    return rateLimit({
+        } as any;
+    } else {
+        opts = {
             windowMs: windowMin * 60 * 1000,
             max,
             skip: skipCondition,
             handler: (req: Request, res: Response, next: NextFunction) => {
                 const message = `Rate limit exceeded. You can make ${max} requests every ${windowMin} minute(s).`;
                 logger.warn(`Rate limit exceeded for IP ${req.ip}`);
-            return next(createHttpError(HttpCode.TOO_MANY_REQUESTS, message));
-        },
+                return next(
+                    createHttpError(HttpCode.TOO_MANY_REQUESTS, message)
+                );
+            }
+        };
+    }
+
+    if (enableRedis) {
+        const client = redisManager.client!;
+        opts.store = new RedisStore({
+            sendCommand: async (command: string, ...args: string[]) =>
+                (await client.call(command, args)) as any
         });
+    }
+
+    return rateLimit(opts);
 }
 
 export default rateLimitMiddleware;

server/routers/ws.ts

@@ -398,7 +398,7 @@ if (redisManager.isRedisEnabled()) {
     });
     logger.info(`WebSocket handler initialized with Redis support - Node ID: ${NODE_ID}`);
 } else {
-    logger.info('WebSocket handler initialized in local mode (Redis disabled)');
+    logger.debug('WebSocket handler initialized in local mode (Redis disabled)');
 }
 
 // Cleanup function for graceful shutdown