Modify v1/search to use the same cache as v2/search (#282)

Author: alanna-zhou

docker-compose.yml

@@ -13,7 +13,7 @@ services:
       - /usr/src/app/node_modules
 
   ghopper:
-    image: cornellappdev/transit-ghopper:v1.0.7
+    image: cornellappdev/transit-ghopper:v1.1.6
     ports:
       - "8988:8988"
 
@@ -28,7 +28,7 @@ services:
       - "8987:8987"
 
   live-tracking:
-    image: cornellappdev/transit-python:v1.0.7
+    image: cornellappdev/transit-python:v1.1.6
     env_file: python.envrc
     ports:
       - "5000:5000"

src/routers/v1/SearchRouter.js

@@ -1,16 +1,9 @@
-// @flow
-import LRU from 'lru-cache';
 import type Request from 'express';
 import ApplicationRouter from '../../appdev/ApplicationRouter';
 import RequestUtils from '../../utils/RequestUtils';
 import SearchUtils from '../../utils/SearchUtils';
 import Constants from '../../utils/Constants';
 
-const queryToPredictionsCacheOptions = {
-  max: 10000, // Maximum size of cache
-  maxAge: 1000 * 60 * 60 * 24 * 5, // Maximum age in milliseconds
-};
-const queryToPredictionsCache = LRU(queryToPredictionsCacheOptions);
 const GOOGLE_PLACE = 'googlePlace';
 const GOOGLE_PLACE_LOCATION = '42.4440,-76.5019';
 
@@ -29,7 +22,7 @@ class SearchRouter extends ApplicationRouter<Array<Object>> {
     }
 
     const query = req.body.query.toLowerCase();
-    const cachedValue = queryToPredictionsCache.get(query);
+    const cachedValue = SearchUtils.queryToPredictionsCache.get(query);
 
     const formattedStops = await SearchUtils.getFormattedStopsForQuery(query);
 
@@ -70,7 +63,7 @@ class SearchRouter extends ApplicationRouter<Array<Object>> {
 
       if (googlePredictions) {
         const filteredPredictions = getFilteredPredictions(googlePredictions, formattedStops);
-        queryToPredictionsCache.set(query, filteredPredictions);
+        SearchUtils.queryToPredictionsCache.set(query, filteredPredictions);
         return filteredPredictions.concat(formattedStops);
       }
     }