Caching on heavily-used API calls: srch/api/profiles

Gemfile

@@ -85,6 +85,7 @@ gem 'execjs' # See https://github.com/sstephenson/execjs#readme for more support
 gem 'sass-rails', '~> 5.0', '>= 5.0.7'
 gem 'therubyracer'
 gem 'uglifier', '>= 1.0.3'
+gem 'grape-rails-cache'
 
 group :development do
   gem 'byebug', platform: :mri

app/api/srch/search.rb

@@ -7,6 +7,8 @@ class Search < Grape::API
     # see /app/api/srch/shared_params.rb
     helpers SharedParams
 
+    include Grape::Rails::Cache
+
     # Endpoint definitions
     # Basic implementation from classic plots2 SearchController
     resource :srch do
@@ -92,19 +94,21 @@ class Search < Grape::API
       end
       get :profiles do
         search_request = SearchRequest.fromRequest(params)
-        results = Search.execute(:profiles, params)
-
-        if results.present?
-          docs = results.map do |model|
-            DocResult.new(
-              doc_type: 'USERS',
-              doc_url: '/profile/' + model.name,
-              doc_title: model.username
-            )
+        cache(key: "api:profiles:#{params[:query]}:#{params[:limit]}:#{params[:sort_by]}:#{params[:order_direction]}:#{params[:field]}", expires_in: 2.day) do
+          results = Search.execute(:profiles, params)
+
+          if results.present?
+            docs = results.map do |model|
+              DocResult.new(
+                doc_type: 'USERS',
+                doc_url: '/profile/' + model.name,
+                doc_title: model.username
+              )
+            end
+            DocList.new(docs, search_request)
+          else
+            DocList.new('', search_request)
           end
-          DocList.new(docs, search_request)
-        else
-          DocList.new('', search_request)
         end
       end