Serverless @ Haufe.Group presented at AWS Summit Berlin 2018
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This document discusses Haufe.Group's transition to a serverless architecture on AWS for one of its components, the EDB (court decision database). Key points: - Haufe.Group is re-engineering its human resources system (HRS) from a monolith to microservices, starting with the EDB. - The EDB architecture on AWS uses serverless workflows comprising Lambda functions and other serverless AWS services like S3. - This has significantly reduced costs compared to using EC2 instances by eliminating idle capacity charges. It also improved scalability and made the system easier to maintain and extend. - The next steps are to address bottlenecks from the RDS database and
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Serverless @ Haufe.Group presented at AWS Summit Berlin 2018
- 1. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Nils Rhode Tech Lead & Team Lead at Haufe.Group Serverless @ HAUFE.GROUP
- 2. Our True North Goal. – A family company for the next generations.
- 3. 1880 employees 13 Locations in Germany 5 International branches 343 Mio. Sales (2017) All DAX 30 – Companies rely on our expertise 150,000 – Seminar participants at Haufe Akademie every year 5,500,000 – Users and licences Our Solutions Print Software Training Consulting Markets Germany Switzerland USA China 1934 founded as publishing house
- 4. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Our challenge Re-Engineering the HRS - from Monolith to Microservices - starting with the first component: EDB (court decision database) AIM: • future-proof by choosing state-of-the-art technics • Low maintenance effort by using services • Fast and cheap way to import millions of documents
- 5. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. EDB Architecture on AWS
- 6. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Example of our serverless workflows
- 7. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. How we realized the mentioned workflow
- 8. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Benefits of our work • Cost-saving (Never pay for idle) 10 imports/month with about 1.000 till 10.000 files as fast as possible (scalability) $79.65 $42.92 $0.46 $4.52 $0.97 16 X T2.NANO 1 X T2.MEDIUM 16 LAMBDAS Idle Needed ~95% paying for idle
- 9. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Benefits of our work $9,558.00 $5,150.40 $55.20 $55.20 $- $2,000.00 $4,000.00 $6,000.00 $8,000.00 $10,000.00 $12,000.00 t2.nano/each function t2.medium/all functions Fee based on imports over all workflows per year Lambda EC2 Cutting down the cost about 99%
- 10. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Benefits of our work • Easy to extend and maintain • add, change or remove functions (microservice-approach) • Configuration of each step (e.g. failure-handling) • „No server is easier to manage than no server“ • Handy transformation from monolith to microservice
- 11. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. How we proceed - Our bottleneck: RDS database and the limited scaling (costs of Lambda for failover by re-trying: about:10%) - High costs for ES (only needed for handling queries for export) => We‘re waiting for Aurora Serverless
- 12. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved. Thank you!
Editor's Notes
- Haufe is a family-operated business and we‘re very proud of beeing so and we would like to keep this up for the next generations
- Founded 1934 as publishing house, Haufe derived to one of the leading companies in terms of transformation to digitization About 1.800 employees spreaded over 20 locations all over the world – headquarter and most of location are within Germany Haufe will generate sales of 370 € mio. euros in 2018 Haufe brand offers (amongst many other famous products like Lexware or the Haufe Akademie): specialist information, applications and services for the area of “tax and laws”. For those apps, services and informations the ED of Haufe Group is responsible for this and that’s where I am hiring for.
- The mentioned specialist informations are stored within the HRS system => HRS offers, beside the stored content, apps and services for interacting with the content 15 years old => just 6 month ago decided to reengineer and break down the monolith into microservices, starting with the first component „EDB“. EDB is an own database within the whole HRS system, serving all content about court decision => 500.000….. => The overall functionality of EDB => Import, Improve, Export AIM of Reengineering => future prood by state-of-the-art and to be able to integrate with technics like AI and ML in the future Low maintenance => team about 5 developer, and just the first componenten out of a total of 7 Fast and cheap, because the import and export are running in irregular intervals (10 times import a month and exports every night)
- Quick overview of how the EDB application looks like on AWS
- Needed???? => would be the case „how to do it“ and „hot it‘s done by AWS – which is even nice and easy to understand“
- - Transformation to microservice =>
- - Transformation to microservice =>