Serverless architecture is now fully accepted in Haufe Group.
More and more solutions and services use serverless technology.
Despite the fact that serverless is highly cloud provider specific, teams prefer the technology cause it offers advantages regarding reduced infrastructure maintenance efforts and costs.
Therefore the classification changed from productize to scale.
HRS The HRS team finished reengineering of the EDB (court decision database) based on serverless technology. Nils Rhode firstname.lastname@example.org presented the approach and outcome at several conferences like AWS Summit, x-celerate and Haufe internal community days. You can find his presentation here.
Open Badges Server
Haufe Akademie works on providing an Openbadge service for education certificates.
Integration in the existing Akademie landscape is done with AWS serverless services.
Contact Markus Lobreyer email@example.com for more information.
AWS and Azure both provide the new exciting way of serverless applications/functions. Main features/promises are:
Servless technology enables developers to create small apps that are called on demand and to run these apps with minimal cost. Serverless functionality might be triggered by various sources like:
A primary benefit here is that maintenance effort for serverless infrastructure is highly reduced.
But, with the use of serverless technology the app is locked-in to a cloud provider. You cannot switch to a traditional hoster anymore or run the service on-premise.
The foundational services team is using AWS Lambda mostly for tasks outside the critical path. As a custom resource for CloudFormation, the serverless solution allows the team to manage all deployment aspects in an elegant way by deploying a new CloudFormation stack. Baking AMIs and doing green/blue switches are only two of the many use cases where AWS Lambda comes in handy.
In addition to deployment automation, the team is using AWS Lambda to process incoming data. Lambda can respond to events from various sources such as S3 Buckets, SNS topics, Kinesis streams, and HTTP endpoints. Also, it is a perfect match to process, transform, and forward incoming data in near-real-time at a fraction of the cost of running an ESB.
As part of the re-engineering of the EDB (court decision database), the HRS team takes a serverless approach by using AWS Lambda, AWS Step, and API Gateways to process many files. More than 500.000 files were processed in less than six hours in the initial import. Serverless computing is a good solution for this use case that occurs on a scheduled basis because it reduces computing costs.
Azure functions are used at Haufe-Lexware Real Estate to implement some REST-based Web-Services like News-Service and a Service to exchange data with partners.
HLRE plans to use these services in wowinex in the upcoming year - 2018.
It is fairly easy to develop in Azure functions. You have many choices regarding the development language. The key driver for the decision to use Azure functions was scalability. If services are not used, Haufe-Lexware does not incur computing costs. On the other hand, we must also be able to handle a growing number of customers and traffic.
Raul Firu firstname.lastname@example.org, Rainer Zehnle email@example.com, Frederik Michel firstname.lastname@example.org, Nils Rhode email@example.com