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Mark Brown

@markjbrown.com
983 followers 180 following 4K posts

I work on the Azure Cosmos DB team. ❤️ Distributed systems and databases. Helping developers design for infinite scale.

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Reposted by Mark Brown
ExamineYourZipper 🌊🇺🇸🦅🇨🇦🍁🇺🇦🌻🇵🇸🍉 @cidbarret85.bsky.social · 24/06/2025
I was today years old when I learned about this. Why is nobody talking about this? 💊 This is great what he is doing, unlike most billionaires... 👍🏼 @mcuban.bsky.social
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Mark Brown @markjbrown.com · 30/05/2025
Not many people know that Microsoft Teams runs on Cosmos DB. Even fewer people know that they do TRILLIONS of transactions per day on Petabytes of data. Learn how and why they use Cosmos DB. devblogs.microsoft.com/cosmosdb/pow...
devblogs.microsoft.com
Powering Real-Time Messaging at Scale with Azure Cosmos DB - Azure Cosmos DB Blog
Discover how Microsoft’s unified messaging platform—powering Teams, Copilots, and ACS—leverages Azure Cosmos DB to deliver real-time communication at global scale. Learn about the key capabilities tha...
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Mark Brown @markjbrown.com · 06/05/2025
If you're going to Microsoft BUILD come learn how to build multi-agent apps using Semantic Kernel in C# or LangGraph in Python at our hands-on-lab. build.microsoft.com/en-US/sessio... There's another earlier delivery as well.
Learn to build multi-agent apps at our hands-on-lab at MS BUILD.
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Reposted by Mark Brown
Azure Cosmos DB @azurecosmosdb.com · 25/04/2025
Ep. 104 of #AzureCosmosDB TV is here! 🎥 High-Scale Data Processing over 1000s of Devices with Expanso See how Expanso + Azure Cosmos DB handle 50M records in under a minute with 1,000 edge nodes 🌍 📺 youtu.be/F2VMVjSxIHY #EdgeComputing #DistributedSystems #NoSQL
youtu.be
High-Scale Data Processing over 1000s of Devices with Azure Cosmos DB and Expanso - Ep. 104
YouTube video by Azure Cosmos DB
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Mark Brown @markjbrown.com · 15/04/2025
Come check out the latest for @azurecosmosdb.com and see the exiting things customers are building at Cosmos DB Conf. Streaming live NOW!!! www.youtube.com/watch?v=qXSu...
youtube.com
Azure Cosmos DB Conf 2025
YouTube video by Azure Cosmos DB
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Mark Brown @markjbrown.com · 07/04/2025
I just updated our Samples Gallery with our latest great sample apps. 1. Multi-agent sample using OpenAI Swarm and Cosmos DB. 2. Full-day workshop building multi-agent apps using LangGraph in Python or Semantic Kernel Agents in C#. azurecosmosdb.github.io/gallery/
azurecosmosdb.github.io
Azure Cosmos DB Gallery
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Mark Brown @markjbrown.com · 03/04/2025
We built a new 1-day workshop on building Multi-Agent AI Apps. Choose your own adventure and learn using LangGraph (python) or Semantic Kernel Agents (C#), or both. All the code is here. Deploy/run full sample on main branch or use start branch for workshop. github.com/AzureCosmosD...
github.com
GitHub - AzureCosmosDB/banking-multi-agent-workshop: A multi-agent sample and workshop for a retail banking scenario. Implemented in both C# using Semantic Kernel Agents and Python using LangGraph.
A multi-agent sample and workshop for a retail banking scenario. Implemented in both C# using Semantic Kernel Agents and Python using LangGraph. - GitHub - AzureCosmosDB/banking-multi-agent-worksh...
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Reposted by Mark Brown
Azure Cosmos DB @azurecosmosdb.com · 24/02/2025
New Video Series Alert! 🎬 Learn how to optimize performance, reduce costs, and scale efficiently with Azure Cosmos DB Design Patterns! 🚀 Watch now: aka.ms/AzureCosmosD... #AzureCosmosDB
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Mark Brown @markjbrown.com · 29/01/2025
Enjoying Tet with a Vietnamese salted cream iced coffee. Great way to start the new year.
Vietnamese iced salted cream coffee
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Reposted by Mark Brown
Azure Cosmos DB @azurecosmosdb.com · 29/01/2025
📊 Ever wondered what embeddings are and how they power AI applications? 🤔 @markjbrown.com breaks it down in this short video, covering everything from LLMs to recommendation engines! 🚀 📺 Watch now: youtu.be/wF8xsL4w0_I #AzureCosmosDB #AI
youtu.be
Azure Cosmos DB Shorts: What are embeddings?
YouTube video by Azure Cosmos DB
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Reposted by Mark Brown
Adam Gordon Bell @adamgordonbell.bsky.social · 27/01/2025
Distributed databases talk with @markjbrown.com We covered: • Scaling OUT (adding nodes) vs. UP (bigger servers) • Why partitioning is so important • How session-level consistency lets you read your writes without the cost of full strong consistency www.youtube.com/watch?v=Wv0q...
youtube.com
How do distributed databases actually work?
YouTube video by PulumiTV
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Reposted by Mark Brown
James Cowling @jamescowling.dev · 24/01/2025
Got to sit down with Professor @andypavlo.bsky.social on the latest @convex.dev Databased podcast for his 2024 databases year in review! www.youtube.com/watch?v=1B-M...
youtube.com
What You Missed in 2024 in the World of Databases, with Andy Pavlo
YouTube video by Convex
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Mark Brown @markjbrown.com · 14/01/2025
Lolz
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Mark Brown @markjbrown.com · 14/01/2025
Customers have been asking us to make it easier to automatically generate embeddings on their data in @azurecosmosdb.com So we created this: devblogs.microsoft.com/cosmosdb/emb... This sample shows how to use a Cosmos DB Trigger & Output binding in Functions to do it automatically.
devblogs.microsoft.com
Cosmos DB Embeddings Generator Sample - Azure Cosmos DB Blog
Ever since our first preview announcement for vector indexing and support for DiskANN and then again when we announced the GA for these features, customers have been asking us to make it easier to gen...
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Reposted by Mark Brown
The Onion @theonion.com · 11/01/2025
theonion.com
Mark Zuckerberg Defends Decision To Fly Confederate Flag At Facebook Headquarters
MENLO PARK, CA—Claiming that the banner embodied the spirit of the company’s values, Mark Zuckerberg defended his controversial decision Friday to fly a Confederate flag at the Facebook headquarters. ...
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Mark Brown @markjbrown.com · 19/12/2024
Embeddings are at the heart of how an LLM works. But understanding how they work is hard. To help, I created a simple Python Notebook that takes an array of words and plots them in a 3D graph to show how the compare in a multi-dimensional space. Feel free to check out. github.com/AzureCosmosD...
Visualizing Embeddings in 3D graph
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Reposted by Mark Brown
Caroline Fiennes @carolinefiennes.bsky.social · 02/12/2024
Notre Dame in Paris re-opens this wkd. I'm a cathedral nerd. Here are some things that you might not notice about it – just from that one photo. THREAD. 1. You can see straight down the nave to the apse. No medieval English cathedral has that.
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Reposted by Mark Brown
Hasan Savran @savranweb.bsky.social · 06/12/2024
I will be speaking at the Azure Cosmos DB Global User Group on December 10th about performance tuning for @azurecosmosdb.com Please use the following link to register now. #AzureCosmosDB #MvpBuzz www.meetup.com/azure-cosmos...
meetup.com
Performance Tuning for Azure Cosmos DB, Tue, Dec 10, 2024, 10:00 AM | Meetup
Azure Cosmos DB is a fully managed database service, freeing developers from database management tasks. However, as a developer, you still have important responsibilities,
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Mark Brown @markjbrown.com · 04/12/2024
I am once again in CDG and ONCE AGAIN something completely stupid is keeping me from making my connection. This time they won't let us leave the jet way after getting off the plane. No explanation given.
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Mark Brown @markjbrown.com · 03/12/2024
Yes everyone should! 🙂
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Mark Brown @markjbrown.com · 03/12/2024
Join me today for my session, Build High Perf AI Apps using OpenAI & Cosmos DB Learn how vectors work, query 100B vectors in < 50ms, semantic caching and how to build massively scalable RAG Pattern applications. Today at 17:00 in K2. #ESPC24 www.sharepointeurope.com/events/build...
sharepointeurope.com
Build High Performance AI Apps using Azure OpenAI & Azure Cosmos DB - ESPC Conference, 2024
Azure Cosmos DB is a distributed NoSQL database providing unmatched availability, performance and scalability and now offers vector database capabilities developed by Microsoft Research for building A...
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Reposted by Mark Brown
Jeff Fritz @csharpfritz.com · 02/12/2024
Ooh! Azure Cognitive Services Translator is FREE for 2M characters a month? ok ok... this gives me zero excuses to not set up a GitHub action to add machine-generated translations to my applications. I'm going to use this action from @davidpine.bsky.social to start: github.com/IEvangelist/...
github.com
GitHub - IEvangelist/resource-translator: A GitHub Action that automatically creates machine-translated PRs of translation files. Supported file formats include, .ini, .po, .restext, .resx, .xliff .js...
A GitHub Action that automatically creates machine-translated PRs of translation files. Supported file formats include, .ini, .po, .restext, .resx, .xliff .json. - IEvangelist/resource-translator
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Mark Brown @markjbrown.com · 02/12/2024
Oh hell. I just realized I flew to Europe and neglected to bring both my power pack for all my equipment and my power adapter.
media.tenor.com
a man talking on a phone in front of a sign that says friday preston
ALT: a man talking on a phone in front of a sign that says friday preston
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Mark Brown @markjbrown.com · 02/12/2024
Made it through CDG. I really dislike this airport but it does smell nice in places.
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Mark Brown @markjbrown.com · 02/12/2024
CDG is the worst airport in the world. Maybe Newark is worse... No, CDG. I'm sure of it.
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Mark Brown @markjbrown.com · 01/12/2024
Flying to Stockholm for #ESPC24 to talk about how to build massively scalable Gen-AI applications using @AzureCosmosDB.com. If you're going, comme check out my talk on Tuesday.
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Mark Brown @markjbrown.com · 01/12/2024
Major update to our @azurecosmosdb.com Copilot C# sample app. Added... Semantic Kernel Cosmos vector search Better token management New full-text and hybrid search features. Aspire integration. Other refinements as well. github.com/AzureCosmosD...
github.com
GitHub - AzureCosmosDB/cosmosdb-nosql-copilot: Build a copilot application with Azure OpenAI Service, Azure Cosmos DB & Azure App Service.
Build a copilot application with Azure OpenAI Service, Azure Cosmos DB & Azure App Service. - AzureCosmosDB/cosmosdb-nosql-copilot
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Mark Brown @markjbrown.com · 27/11/2024
This feels like Ballmer's take on Apple iStore 20 years ago.
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Mark Brown @markjbrown.com · 27/11/2024
Oh this is awesome. I was running out of Post-it Notes jotting these down 🙂
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Mark Brown @markjbrown.com · 24/11/2024
I left #msignite early last week due to a bad wind storm here in Seattle. No power for four days. Lots of down trees. Here's just a few. Many got much worse and still people in my neighborhood without power nearly 6 days later. So inviting some over for dinner and to do laundry.
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Reposted by Mark Brown
God @thegodshow.com · 21/11/2024
Bluesky banned Andrew Tate in less than 24 hours. SMITE!
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Reposted by Mark Brown
Jimmy Zelinskie @jimmy.zelinskie.com · 22/10/2024
Working on a databases starter pack: go.bsky.app/7mG8msu
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Reposted by Mark Brown
Martin Kleppmann @martin.kleppmann.com · 06/11/2024
If you need some non-election material to distract you, Leslie Lamport just dropped a new book on TLA+ lamport.azurewebsites.net/tla/science-...
lamport.azurewebsites.net
A Science of Concurrent Programs
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Mark Brown @markjbrown.com · 20/11/2024
Come see our session today with Toyota on how they built their durable multi-agent AI in Azure. It's pretty cool what they've built. I'm also going to show what a Semantic Cache can do for your customer facing Gen-AI apps 9:45 am - Room W187 #MSIgnite ignite.microsoft.com/en-US/sessio...
ignite.microsoft.com
Lessons from Toyota for building durable multi-agent copilots
Discover the power of GenAI in Toyota’s powertrain development. Learn how Toyota improves information collection, enhances decision-making, and boosts productivity for powertrain engineers with a mult...
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Mark Brown @markjbrown.com · 19/11/2024
Cool vantage point to see the show floor at #MSIgnite
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Reposted by Mark Brown
Kevin Pilch @pilchie.dev · 19/11/2024
The biggie! GA of vector search, plus new Full Text Search and Hybrid search capabilities in #AzureCosmosDB #MSIgnite: devblogs.microsoft.com/cosmosdb/new...
devblogs.microsoft.com
New Vector Search, Full Text Search, and Hybrid Search Features in Azure Cosmos DB for NoSQL - Azure Cosmos DB Blog
Explore new Vector Search, Full Text Search, and Hybrid Search features in Azure Cosmos DB for NoSQL—boosting AI accuracy and relevance for advanced applications.
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Mark Brown @markjbrown.com · 19/11/2024
THANK YOU @deck.blue. Feels like going home to have this experience again!!!
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Reposted by Mark Brown
Andrey Satarin @asatarin.bsky.social · 19/11/2024
Hello, Bluesky users! I curate and maintain list of resources on testing distributed systems. You might have seen it before. It's a good one, if I may say so myself. asatarin.github.io/testing-dist...
asatarin.github.io
Testing Distributed Systems
Curated list of resources on testing distributed systems
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Reposted by Mark Brown
Maarten Balliauw @maartenballiauw.be · 19/11/2024
Might as well join in on creating starter packs. Developer conferences! go.bsky.app/TZoPif2 #dotnet #java #azure
go.bsky.app
Developer Conferences on Bluesky
Join the conversation
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Mark Brown @markjbrown.com · 18/11/2024
Rehearsal for my session with Toyota in their durable multi-agent AI system they built using Azure Cosmos DB Be sure to check out BRK117 on Wednesday at #MSIgnite
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Mark Brown @markjbrown.com · 18/11/2024
Things all getting set up for tomorrow. #MSIgnite
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Mark Brown @markjbrown.com · 18/11/2024
We got swag! 😎 At #MSIgnite and want “extra exclusive swag? Find a PeerSpot rep near our Azure Cosmos DB booth, give a review of Cosmos, and we’ll gift you earbuds!
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Mark Brown @markjbrown.com · 18/11/2024
Great video to get you running fast using Cosmos. Don't assume that 20 years of using SQL means you don't need an intro. Scale out NoSQL databases are different. SOME things that are ok for RDBMS are anti patterns here.
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Mark Brown @markjbrown.com · 18/11/2024
5am workout to get my energy and start #MSIgnite right.
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Mark Brown @markjbrown.com · 18/11/2024
Played tourist today here in Chicago. Tomorrow, rehearsals and, you know, work. #MSIgnite
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Mark Brown @markjbrown.com · 18/11/2024
Played tourist today here in Chicago. Tomorrow, rehearsals and, you know, work. #MSIgnite
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Mark Brown @markjbrown.com · 17/11/2024
Giving @blueark.app a try here. Thanks @scott.hanselman.com
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Mark Brown @markjbrown.com · 17/11/2024
I've been using Bogus for years to create synthetic datasets. Turns out gpt-4o is ever better at it once you get the prompts dialed in. Created a product catalog generator in Python using it. Generates vectors too. Going to keep adding more. github.com/AzureCosmosD...
github.com
GitHub - AzureCosmosDB/llm-data-generator: This repository demonstrates how to generate a synthetic data set using Azure OpenAI GPT-4o and generate vectors on it using text-3-large
This repository demonstrates how to generate a synthetic data set using Azure OpenAI GPT-4o and generate vectors on it using text-3-large - AzureCosmosDB/llm-data-generator
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Mark Brown @markjbrown.com · 15/11/2024
Join me at #MSIGNITE next week to discover how Toyota Motor Corporation is revolutionizing car design with a multi-agent AI system powered by #AzureCosmosDB and #AzureOpenAIService. ignite.microsoft.com/en-US/sessio...
Toyota and Durable Multi-Agent AI systems at Microsoft IGNITE, session code BRK117
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Mark Brown @markjbrown.com · 15/11/2024
Did you know that we tons of Gen-AI Samples using Azure Cosmos DB? For instance, our solution accelerator for how to build your own production-ready copilot in .NET 8, w/ AKS or ACA and Semantic Kernel. github.com/Azure/BuildY...
github.com
GitHub - Azure/BuildYourOwnCopilot: Reference solution for how to build your own production-ready Copilot in Azure on .NET 8 using: Azure Cosmos DB and its vector database capabilities, containerized ...
Reference solution for how to build your own production-ready Copilot in Azure on .NET 8 using: Azure Cosmos DB and its vector database capabilities, containerized and running on AKS or ACA using M...
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