Published

https://youtu.be/UyxDaPGIXig Problem Pick 2 out of Decentralized Secure Fast Bitcoin chooses Decentralized Secure But loses ‘fast’ Bitcoin’s proof of work limits it’s throughput to 3-7 transactions per second This is already showing as too little. A lot of energy is wasted in bitcoin Proposed solutions [bitcoin cash] Increase blocksize Proof of stake (instead of proof of work) [eos] Delegated proof of stake (DPOS sacrifices decentralisation) [ripple] transfer ‘I owe you’ (centralized) [stellar] stellar consensus protocol Side-chains (secondary layer for lower cost and higher speed) Off-chains (move entire computation outside blockchain) [lightning] Offchain state channels (part of the blockchain is locked by a smart contract that requires 100% consensus, then is transfered back to the blockchain and the state channel is closed) Offchain computations [plasma] only block headers in main chain Etherium sharding Decentralized storage

Lightning Talk: Aiding bounded contexts design with design heuristics - Kamil Szymański Never this simple: focus on essential parts www.dddheuristics.com -– Example: Marketing funnel different names for customer better use specific terms when they mean different things What is the focus of a context? drive awareness or interest What question would a context answer or event storming better events allow us to run different experiments...

Lightning Talk: Explaining flow in 5 minutes - Michel Grootjans https://github.com/michelgrootjans/explaining-flow

Lightning Talk: Incidents are new normal - Kasia Balcerzak blameless incident review (1) gather facts facts events everything related to incident -logs how our org behaved before, during, after the incident not: when did you discover yes: How did you discover… led to the incident or made the incident worse causal factors by themselves are not a problem incident = when causal factors are combined eg. “not enough time for testing”...

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Talk: Sociotechnical Architecture as an enabler for Product Thinking - Eduardo da Silva as keys to enable product thinking customer centric continuous learning with the customer maximize value for customer continuously better make sure your team is aligned on the product team topology global optimisation not: local optimisation best fish sticks + best wine != best meal experimentation product thinking = max value of customer what + who + how interrelated elements...

Talk: Sweet Streams are Made of These: data-driven development in stream processing - Caito Scherr multiple sources incompatible data, metadata, … Which basic data driven principles 2 oversimplified -– (1) Metrics driven metrics dashboards start to look like this… very selective flexible, if priority changed -– (2) Metrics as a Shared Language metrics -> modular eg. slack integration...

Lightning Talk: Time-based domain events quickly - Konrad Jakubiec Example -– “6 months of service” Time based domain event Domain concept: Problem: external dependencies -– problem: past / future picks up event, put it somewhere, sends to benefitsContext -> more stuff in anti corruption layer Can we talk about scheduled events?...

Thursday Lightning Talks Talk_ Reductionism and Holism in DDD - Trond Hjorteland Talk_ No, you don’t need to access my data. - Alberto Brandolini Talk_ Dearth of a Drafter - Einar Høst Talk_ People and Patterns - Andrew Harmel-Law Session_ Social Problems of being a drafter - Tim Schraepen Session_ Pseudocode Refactoring Kata - Mathias Verraes Lightning Talks Talk_ The Distributed Human System - Alan Jefferies Talk_ What do you mean by “is”_ - Duncan Jones [[talk-tech-alignment-with-narratives-lothar-schulz....