Add rate limiting to authentication and sign up endpoints

apps/api/src/app/app.module.ts

@@ -176,13 +176,22 @@ import { UserModule } from './user/user.module';
       imports: [ConfigurationModule],
       inject: [ConfigurationService],
       useFactory: (configurationService: ConfigurationService) => {
+        const isRateLimitingEnabled = configurationService.get(
+          'ENABLE_FEATURE_RATE_LIMITING'
+        );
+
         return {
-          storage: new ThrottlerStorageRedisService({
+          skipIf: () => {
+            return !isRateLimitingEnabled;
+          },
+          storage: isRateLimitingEnabled
+            ? new ThrottlerStorageRedisService({
                 db: configurationService.get('REDIS_DB'),
                 host: configurationService.get('REDIS_HOST'),
                 password: configurationService.get('REDIS_PASSWORD'),
                 port: configurationService.get('REDIS_PORT')
-          }),
+              })
+            : undefined,
           throttlers: [
             {
               limit: 10,

apps/api/src/services/configuration/configuration.service.ts

@@ -50,6 +50,7 @@ export class ConfigurationService {
       ENABLE_FEATURE_CRON: bool({ default: true }),
       ENABLE_FEATURE_FEAR_AND_GREED_INDEX: bool({ default: false }),
       ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES: bool({ default: true }),
+      ENABLE_FEATURE_RATE_LIMITING: bool({ default: false }),
       ENABLE_FEATURE_READ_ONLY_MODE: bool({ default: false }),
       ENABLE_FEATURE_STATISTICS: bool({ default: false }),
       ENABLE_FEATURE_SUBSCRIPTION: bool({ default: false }),

apps/api/src/services/interfaces/environment.interface.ts

@@ -23,6 +23,7 @@ export interface Environment extends CleanedEnvAccessors {
   ENABLE_FEATURE_CRON: boolean;
   ENABLE_FEATURE_FEAR_AND_GREED_INDEX: boolean;
   ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES: boolean;
+  ENABLE_FEATURE_RATE_LIMITING: boolean;
   ENABLE_FEATURE_READ_ONLY_MODE: boolean;
   ENABLE_FEATURE_STATISTICS: boolean;
   ENABLE_FEATURE_SUBSCRIPTION: boolean;