Skip to content

Learn

All CoursesBrowse the full catalog of expert-led courses
WorkshopsDeep-dive workshops from industry experts

AI-Powered

Learning PathsNewA personal path to your goal, built by AI
AI AgentLearn with an AI agent on every lesson
MCP ServerBring Dometrain into your AI coding tools
Mock InterviewsNewPractice real interviews with an AI interviewer

Trending now

Dometrain ProAll courses. One subscription.Every course and workshop replay, plus the AI-powered tools.Explore Pro

Community

LeaderboardSee how you rank against fellow learners
ReviewsWhat developers say about our courses
Customer StoriesHow real teams level up with Dometrain
ChangelogSee what's new and improved at Dometrain

Content

BlogsArticles and deep dives from our authors
AuthorsMeet the engineers behind the courses

Partners

AffiliatesEarn by sharing Dometrain with your audience
Dometrain for BusinessTraining and team management for companies

SkillScoreNew Dometrain Pro

Shopping Basket

Your basket is empty

Business Portal

Event Sourcing in .NET

4h 45m

Deep Dive

Progress0%

0 / 50 lessons4h 44m left

Course overview(0/3)

WelcomeFree Preview39s What will you learn in this course?Free Preview51s Who is the course for and prerequisitesFree Preview1m 0s

Introduction to Marten(0/9)

Chapter introduction38s Setting up PostgreSQL4m 6s What is Marten?3m 36s A quick refresher of our domain2m 18s Writing some events to a stream9m 25s Applying events to an aggregate10m 5s Projecting events11m 31s Where will Marten fit into our CQRS architecture?2m 59s Recap40s

Using Marten in an application(0/9)

Outline of our plan1m 19s Making the command handlers work17m 24s A disclaimer on abstractions1m 46s Marten's test strategy3m 49s Making our unit tests work again23m 18s Using Marten's projection system24m 5s Using subscriptions for our UI10m 36s Solution cleanup2m 24s Recap2m 10s

Event versioning(0/6)

What you should try to avoid2m 55s Is it really the same event?1m 51s Making non-breaking changes7m 54s Contract-breaking changes7m 29s Writing new streams5m 45s Recap3m 8s

More on Projections(0/6)

Introduction45s Where & When do projections run?9m 34s Single Stream Projections7m 42s Multi-Stream Projections6m 48s Testing Projections8m 34s Recap2m 1s

Enriching our events(0/5)

Why do we need more info?2m 43s A quick refactor10m 38s Logging commands11m 25s Adding event metadata6m 59s Recap1m 20s

Snapshots & Concurrency(0/5)

Why do we need snapshots?4m 28s Marten's built-in snapshots9m 40s Dealing with concurrency issues6m 34s Custom snapshots7m 0s Recap39s

Integrating with other systems(0/4)

Integration scenarios1m 40s Event Subscriptions6m 59s The Saga Pattern9m 32s Recap1m 13s

Course conclusion(0/3)

Further resources2m 58s Conclusion1m 35s Rate this course

0 matches found

Loading transcript

No transcript available for this lesson.

Sign in to take notes

Timestamped notes are saved to your account and grouped by lesson here, so you can jump back to any moment of the course.

Get Your Certificate

Why do we need snapshots?

Snapshots & Concurrency

Watch 50% of the video to earn XP

Sign in to watch this course

Already a Dometrain Member?

or

New to Dometrain?

Next Lesson

Marten's built-in snapshots

Complete to earn+100 XP

+0 XP

+20 to next Gem

1 day streak!

Level up!

Streak saved!

Lesson Complete!

+0 XP

+20 to next Gem

Streak started!

Level 1!

Freeze earned!

Up next:Marten's built-in snapshots

Lesson Notes

Read this lesson

Loading content...

Unable to load content. Please try again.

Upgrade to Dometrain Pro

Get unlimited access to this video and all other courses on Dometrain with a Pro subscription.

Unlimited access to all courses
New courses added regularly
Certificates of completion

Get Dometrain Pro

Where today's experts teach tomorrow's

Learn

Courses Learning Paths Workshops

Community

Blog Authors Reviews Customer Stories Changelog

Business

Dometrain Pro Business Portal Affiliates

Support

Contact Terms of Use Privacy Policy

© 2026 Dometrain. All rights reserved.

What's New