Azure Cosmos DB gives developers incredible scale and flexibility — but without deliberate design, costs can spiral fast.

Patrick Oguaju (Software Engineer at Next) walks through how his team re-architected a real production system to dramatically reduce Cosmos DB costs without sacrificing performance, availability, or developer velocity.

The session covers:

• How poor partitioning and indexing silently inflate RU consumption
• Practical data-modeling patterns that cut read/write costs
• Strategic use of TTL, Change Feed, and data tiering
• When NOT to use containers, indexing, or multi-region writes
• How observability exposed hidden cost leaks

Demo-driven, grounded in real engineering decisions from high-volume, globally distributed systems.

👤 Connect with Patrick Oguaju
📝 Patrick C. Oguaju is a software engineer with hands-on experience designing and operating high-scale, cost-sensitive distributed systems on Azure.

He has worked extensively with Azure Cosmos DB in production, supporting data-intensive workloads across various industries, including retail, content platforms, and cloud-native services. His work spans data modeling, migration, performance tuning, observability, and cost optimization.

Patrick focuses on practical engineering lessons, including the trade-offs, failures, and insights that only emerge in real systems at scale, and enjoys sharing patterns that developers can immediately apply in their own architectures.

💼 https://www.linkedin.com/in/patrick-oguaju
✍️ https://medium.com/@pyrosv
🎤 https://developer.azurecosmosdb.com/conf/#speaker/patrick-oguaju

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Azure Cosmos DB Conf 2026 is a free virtual developer event focused on building modern, scalable applications with Azure Cosmos DB. Sessions feature Microsoft engineers, product teams, and members of the global developer community sharing real-world solutions and best practices.

Originally streamed on April 28, 2026 | 9:00 AM – 2:00 PM PT

🔗 Useful Links
• Explore all sessions on-demand — https://aka.ms/CosmosConf26Playlist
• Take the Cosmos Conf Challenge. First 500 to complete gets a voucher for 100% free certificate exam for DP-420 — https://aka.ms/CosmosDBConfChallenge
• Azure DB Cosmos Conference 2026 Post-Event Survey — https://aka.ms/CosmosConf2026Survey
• Visit the conference website — https://aka.ms/azurecosmosdbconf
• Subscribe to Azure Cosmos DB on YouTube — https://www.youtube.com/@AzureCosmosDB
• Follow Azure Cosmos DB on X — https://x.com/AzureCosmosDB
• Follow Azure Cosmos DB on LinkedIn — https://www.linkedin.com/company/azure-cosmos-db/

#AzureCosmosDBConf #AzureCosmosDB

Cost-Efficient High-Scale Systems with Azure Cosmos DB | Patrick Oguaju | Azure Cosmos DB Conf 2026