disable rate limiter feature flag

src/index.ts

@@ -116,6 +116,7 @@ app.use(compression());
 app.set('trust proxy', 1);
 app.use(logHttp);
 app.use(handleResponseTime);
+if (!FEATURE_FLAGS.DISABLE_RATE_LIMIT) {
 	app.use(
 		rateLimit({
 			windowMs: 1000, // 1 second
@@ -131,6 +132,7 @@ app.use(
 			},
 		})
 	);
+}
 
 // strip off /dlob, if the request comes from exchange history server LB
 app.use((req, _res, next) => {

src/utils/featureFlags.ts

@@ -12,6 +12,10 @@ export const FEATURE_FLAGS = {
 	DISABLE_GPA_REFRESH: process.env.DISABLE_GPA_REFRESH
 		? process.env.DISABLE_GPA_REFRESH.toLowerCase() === 'true'
 		: false,
+
+	DISABLE_RATE_LIMIT: process.env.DISABLE_RATE_LIMIT
+		? process.env.DISABLE_RATE_LIMIT.toLowerCase() === 'true'
+		: false,
 };
 
 export default FEATURE_FLAGS;