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\u201cTime is important for business. We have to model it explicitly. Temporal modeling means that we use time-based artifacts as first modeling citizens."

Tomasz Jaskula is the CTO and co-founder of Luteceo and an experienced software developer and architect. In this episode, we started off discussing how Domain-Driven Design (DDD) influenced Tomasz\u2019s view on software development approach and its relation with functional programming. Tomasz then explained in depth about the time concept in business applications and temporal modeling, in particular, bi-temporal modeling. He mentioned the different concepts of time in temporal modeling, explaining them using an example for easier illustration. We then extended our discussion further to Event Sourcing, understanding the key concept, its relation to temporal modeling, when we should decide to use Event Sourcing in our application, and some available tools that can help us implement Event Sourcing.

Listen out for:

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• Career Journey - [00:04:58]
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• DDD and Bounded Context - [00:08:56]
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• DDD and Functional Programming - [00:13:24]
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• Temporal Modeling - [00:14:47]
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• 3 Different Types of Time - [00:21:13]
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• Event Sourcing - [00:25:42]
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• When to Use Event Sourcing - [00:28:13]
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• Event Sourcing Tools - [00:34:02]
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• 3 Tech Lead Wisdom - [00:36:10]
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Tomasz\u2019s Bio
\nTomasz Jasku\u0142a is CTO and co-founder of Luteceo, a software consulting company in Paris. Tomasz has more than 20 years of professional experience as a developer and software architect, and worked for many companies in the e-commerce, industry, insurance, and financial fields. He has mainly focused on creating software that delivers true business value, aligns with strategic business initiatives, and provides solutions with clearly identifiable competitive advantages. Tomasz is also a main contributor to the OSS project XOOM for the .NET platform. In his free time, Tomasz perfects his guitar playing and spends time with his family. He recently wrote a book with Vaughn Vernon titled \u201cStrategic Monoliths and Microservices\u201d published by Addison-Wesley.

Follow Tomasz:

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• LinkedIn \u2013 https://www.linkedin.com/in/tomasz-jaskula-16b2823/
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• Twitter \u2013 @tjaskula
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• Luteceo \u2013 http://luteceo.com
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\nFor more info about the episode (including quotes and transcript), visit techleadjournal.dev/episodes/66.