I don't get something about the use of datastore in a gae app.
I can see after deploying to GAE your app would be using their datastore in the cloud. But when you are still developing the app in eclipse on your local machine, how is it talking to GAE's datastore?
A local simulation of the appengine datastore is created and used - you're not talking to the actual GAE datastore.
You can view your local datastore by going to :
http://localhost:8888/_ah/admin
while your application is running locally.
(using the correct port for your application)
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Im creating a Node.js website that probably won't have loads of traffic, and was looking into cheap solutions to host the site. Came across Google cloud services offering free usage for their services with limits. A f1-mirco is more than enough for my needs, but I will happily pay for some usage if it goes over by any chance.
I wanted to setup a linux centOS 7 on GCE (which I already did), and run my application and REST API on it. Now here comes the problem.
I tried to use Google's datastore service, but it sprung an app engine instance and without it datastore won't work.
Is datastore entirely relying on app engine to function?? In the docs, it said if you use any of the client API, it requires app engine. What can I do to not use the client api and query data then? Don't want to use the app engine at the moment or datastore is just not for me then?
Thanks for any help!
Some of the underlying infrastructure of Cloud Datastore and App Engine are still tied together for creation, etc. So while creating an Cloud Datastore database also defines an App Engine instance for the project, it doesn't require you to use it. You don't get charged for App Engine either, unless you decide to deploy an App using it.
You should be totally fine use the Google Cloud Node client library on the f1 micro instance.
Do I need to deploy an App (even a dummy one) on the App Engine in order to use the Datastore service using the google-cloud-datastore Java API from a client such as a Compute Engine running in the google cloud?
No, you don't need to deploy an AppEngine app to access the Google Cloud Datastore. You just need to create a project from the Console and you can connect to the Datastore in the project from anywhere using the google-cloud-datasource API.
I was able to create the basic 'hello world' program.
When I tried to understand the difference between a cloud and a server I learned that Cloud is where you have an access to virtual instance created exclusively for you and you are free to choose and install software of your choice.Why Google App Engine(GAE) is used widely where as tomcat is not used. What are major differences between GAE and Tomcat?
Cloud is Google Cloud Platform at this case. App Engine is just one of their services.
App Engine is a platform to build your apps on top of it. A Platform As A Service or PaaS. It simplifies the process of building a scalable application, and you should use it when you understand what you really need and understand principles of scalable application.
Tomcat is a Java web container, and there're many alternatives. Google App Engine is using Jetty. You could actually use it with Tomcat by using Flexible VM, though it doesn't make much sense.
App Engine is not about web server, it's a set of services that helps you to build a scalable app. It includes Memcache, Datastore, Task Queue, Images API, deployments tools and versioning, CDN for static files, and most important automatic scale.
Actually you aren't limited to App Engine on Google Cloud Platform. There is more traditional service, like own server in the cloud, called Compute Engine. There you can run your Tomcat or anything else.
I'm using the Eclipse Plugin for App Engine, and I have my application running fine locally (able to read/write to the local Cloud Datastore).
However when I deployed to App Engine, the server copy does not seem to have any Cloud Datastore information. Do I need to upload this separately, and if so how do I do this?
Is there a GUI for Google AppEngine DataStore ?
I'm looking for something similar to phpMyAdmin.
Thanks a lot.
appengine.google.com has its own datastore viewer. where you can login and view the complete datastore for all your applications. In the development server, appengine SDK emulates the same. You can access it like http://localhost:8080/_ah/admin
Yes, in your app dashboard, on the left you see section Data. In that click on datastore viewer. Ofcourse this works if your app is hosted on app engine, for local server see, How to browse local Java App Engine datastore?