Leeds Sharp - A .NET User Group

LeedsSharp are proud to present a series of lightning talks on technical subjects of 5 to 15 minutes.

Our agenda so far:

• Andrew Flatters - Vibe Migrations with GitHub CoPilot CLI
• Matthew Hartley - LOH and behold: A memory investigation
• John Staveley: Introduction to Vectorisation and Similarity Search
• Saeed Esmaelinejad - Building AI Agents with Microsoft agent framework
• TBD

If you have an idea for a talk, please get in touch with John asap to reserve your place!

LeedsSharp are proud to present Poornima Nayar in "Beyond Pub/Sub - Advanced Messaging Patterns"

Access Details Please go to the Enablis offices, they are on the first floor of the building, both front door and office doors should be open. If there is a problem then press the buzzer. We will meet at 6pm for pizza and drinks, the talks will start at 6.45. Some of us go to the either the brewery tap or editors draft pub afterwards at 8pm (vote to be taken).

Abstract:

Publish/subscribe is often the first pattern teams adopt when moving toward asynchronous, message-based architectures. It’s a powerful way to decouple services and enable extensibility—but on its own, pub/sub doesn’t solve many of the problems that show up in real distributed systems, such as data loss, broken workflows, or systems that struggle under load.

In this session, we’ll go beyond basic pub/sub to explore a set of proven messaging patterns used in production. We’ll look at how the Outbox pattern prevents message loss during failures, how sagas coordinate long-running workflows without distributed transactions, how scatter-gather accelerates work through parallelism, and how competing consumers enable elastic throughput when demand spikes. Along the way, we’ll also examine essential operational safeguards such as retries, dead-letter queues, back pressure, and idempotency.

By the end of the talk, you’ll understand when and how to apply these patterns to build systems that are not just decoupled, but resilient, scalable, and designed to handle failure gracefully from day one.

Bio:

Poornima is a .Net developer with over 10 years of experience in .Net. She is passionate about learning new technologies and keeping herself up-to-date with the latest developments in technology. Outside her work, Poornima enjoys music and is undergoing training in Indian Classical music. Based in Langley, UK she mothers a little girl and spends her spare time reading, cooking and watching movies.