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data-sync-amqp-spike's Introduction

Spike Contents

The spike demonstrates lazy initialization of reference data in a microservice using asynchronous communication over amqp.

A service keeps data that is needs from another service in a local copy to be able to access it without needing to query the other service.

Usually this data is propagated using events. But if a new service is introduced into a running system it starts with empty reference data. This spike shows a solution to load missing reference data on demand and store it on first use.

See EPNG-520

Running the spike

start the server side

cd data-synchronization-spring-amqp-server
gradle bootRun

The server side will come up on port 8098

start the client side

cd data-synchronization-spring-amqp-client
gradle bootRun

The client side will come up on port 8099

Create a businessunit on server side

http POST :8098/businessUnits/ tenantId=1 hostname=me.some.de

Create a site on client side

http POST :8099/sites tenantId=3

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