Using the service (aka module) keyword in app.yaml its possible to create
microservices on app engine.
The reason of this post is to get a better picture of how to setup an
application existing of microservices on the app engine. The application in
question will receive, store and send a good amount of data.
*Microservices*
Microservices communicate with eachother using HTTP requests. How do you
decide where the service can be reached, and how does this translate to the
development environment.
1. Discovery service? Minimal sample or link?
2. Hardcoded location <service>.<app_id>.appspot.com? and modify hosts
file for local development?
*Endpoints*
1. Is it a common practice to use the Endpoints feature to develop an
API for internal communication between services?
1. Another solution would be a webapp
2. Is it a common practice to use the Endpoints feature to develop an
REST API for users which communicates with the services?
1. Another solution would be a webapp
*Large response/request*
Developing an application which receives/stores/distrubutes a large data
set. Pushing and pulling data is done using a REST API. My concern is that
the data travels to multiple services over the network increasing bandwith
usage. Example;
[user] -> REST API Service -> Data Service -> Datastore
In a monolith application the data gets processed directly. In a
microservice application the data travels from the user to the API Service
and is then send to the Data Service to be processed.
1. Give the Data Service an API which is accessible by the user?
2. Is this an issue on App Engine cost wise?
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