Attendees

Ram Jagadeesan 

Clive Boulton

Discussion

The Event-Driven Meetup has been modeling a time tracking system following Martin Fowler's Blue-Green deployment of microservices. To close the monthly financials or revisit a prior financial period. Streams need to be rebuilt into analytic objects from immutable logs rather than from aggregates in a SQL database. Blockchain is a possible database solution but is probably overkill because the data is not normally shared outside a central cloud-based system requiring cryptographic signatures. Assuming an immutable log, we consider inverting the blockchain to log the precise versions of the event-based objects in order to terraform exactly. Replay the data and scripts and event-based components at any point in time. Discussing this architecture brought up the following items for further research.

• What code repositories are large-scale IT projects at the big banks and other regulated entities using to terraform code and data?
• Have the selected choices been accepted and prove before regulators?
• Are banking and supply chain systems on par with Amazon or other always-on eCommerce as adoptive of event-sourced (CQRS) based architecture?   
• I.e. are we out over our skis in considering terraforming? 

After researching the above questions we plan to propose presenting any worthwhile findings to the AWG. 

Resources        

https://www.meetup.com/Event-Driven-Meetup (free to attend meetings often Tuesdays and Fridays 10:30 AM Pacific - (about 5-12 architects attend).

Slack channel is open-source  https://eventmodeling.org/resources/

Upcoming paid 2-5 day workshop online Nov 16-20 https://www.adaptechgroup.com/virtual-workshop/ see agenda to learn the scope of slack channel open-sourced content (not an intended plug).

Upcoming 

Presentation planned on 11/18 on Deletion in Append-Only WORM ledgers; Partitioning Detection+Prevention.