Added redis cache layer for staging.datacommons.org (#4383)

Note: after merging, update oncall docs with a step to clear redis after
deploying to staging

deploy/helm_charts/envs/staging.yaml

@@ -27,6 +27,15 @@ website:
   flaskEnv: staging
   replicas: 6
   enableModel: true
+  redis:
+    enabled: true
+    configFile: |
+      {
+        "us-central1": {
+          "host": "10.127.249.59",
+          "port": "6379"
+        }
+      }
 
 ingress:
   enabled: false

server/app_env/staging.py

@@ -19,4 +19,3 @@ class Config(_base.Config):
   GA_ACCOUNT = 'G-HV2XYYS1JD'
   USE_LLM = True
   LOG_QUERY = True
-  USE_MEMCACHE = False

tools/clearcache/clear_staging.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SCRIPT_PATH=`dirname $0`
+$SCRIPT_PATH/run.sh datcom-website-staging website-us-central1 us-central1