web app behaviors randomly when it is deployed

[zhangheliu]

Everything runs smoothly when it runs locally.

Following https://cloud.google.com/community/tutorials/run-expressjs-on-google-app-engine to deploy the app and website starts acting randomly.

[jfschmakeit]

Thanks for trying this out!

I believe this is an issue with the way sessions are handled in express.js through 'express-sessions'.
For this to work on App Engine, you may have to enable and configure memcached.

See these guides for more details and let us know if this worked for you:

• https://cloud.google.com/nodejs/getting-started/authenticate-users#about_sessions
• https://cloud.google.com/community/tutorials/express-memcached-session-appengine
• You could also try this: https://github.com/GoogleCloudPlatform/cloud-datastore-session-node